the hydraulic transmission oil pollution should be how to control and prevent

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(1) processing to remove all parts of the burr to prevent glitches in the operation is washed fall into the working oil.
(2) assembly carefully cleaned the tank, pump housing, conduit casing, rotary components, to prevent debris f rom entering the box.

(3) To pipeline installation of pipelines clean, try to rinse and then install the welding, to prevent oxide into the oil.hydraulic cutting machine

(4) Prior to commissioning, the variable speed hydraulic coupling should use filter cleaning pipes, cleaning after oil filters clean.

(5) constant filling fluid coupling first run 500h, replaced with new oil, oil change, cleaning the coupling cavity.

(6) whether the failure at any time to check the air filter, and replaced with qualified products.

(7) Regular cleaning oil pump suction port of the oil filter, remove dirt, to prevent the flow rate decreases.hydraulic machines

(8) a reasonable choice of filters, specifications and reasonable arrangements for its location. Rated flow of the oil filter should gen erally be greater than the rated flow of working oil pump 3 to 5 times, thus reducing the pressure loss and the number of filter replacement, oil filter can improve function.

(9) The oil temperature should be controlled below 70 ℃ should be cause for the oil temperature is higher oily aging.hydraulic manifolds

(10) the use of qualified hydraulic transmission oil. To see the oil change, oil quality is qualified with impurities, moisture.

to tell you what is a dual-chamber hydraulic coupler

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 Work two pump wheel and turbine fluid coupling cavity called a double-lumen constant filling fluid coupling.

A double-lumen constant filling fluid coupling structure and its characteristicshydraulic manifolds

(1) the structure of the overall structure of the double-lumen constant filling fluid coupling the wheel by two pumps and two turbines, the middle of the two pump wheel has an intermediate connection body, the inner edge of the pump wheel and turbine auxiliary chamber before two single chamber between the flow holes. The small size double-lumen coupling, does not have the intermediate connection member, each of the two pump wheel outwardly some housing to form a space to accommodate two turbine.

(2) the impeller structure dual-chamber hydraulic coupling impeller structure, there are three:hydraulic adaptors

1) impeller structure with single-cavity coupling identical. Equal to the pump wheel and the turbine of the coupling of two single lumen through the intermediate connecting member and the spindle are connected together.

2) the structure of the impeller wit h single-cavity coupling. Usually cascade depth equal to the a 0.09D shallow cavity, the impeller the middle of a baffle ring 3) stamping welding impeller structure. Cascade is approximately equal to an average depth of 0.08D, and shallow outer deep within, which is conducive to reducing the loss of liquid flow contraction. Impeller with the inner ring in the dual-chamber fluid couplings, but the inner ring shallow characteristics. Plus the inner ring may be in order to increase the contact between each of the blades and blade strength and stiffness.

(3) double-lumen constant filling fluid coupling characteristics.

1) the pump wheel torque coefficient due to the different structure of the impeller, the double-lumen constant filling fluid coupling of the pump wheel torque coefficient are not the same.

Impeller structure is the same as the single-chamber, dual-chamber pump wheel torque coupling coefficient is approximately equal to the single-c hamber times the power transfer is also approximately equal to 1 times the single-chamber.

Impeller structure of a shallow cavity, the pump wheel torque coefficient is not equal to 1 times the single-chamber, but about equal to the conventional single-cavity fluid coupling of 1.4 to 1.6 times. The power transfer is approximately equal to 1.5 times of the conventional single-cavity fluid coupling.hydraulic ferrule

2) overload coefficient from the cavity structure, the dual-chamber constant filling fluid coupling equivalent with front auxiliary chamber constant filling fluid couplings, which have characteristics generally contrast, and thus a higher coefficient of overload, especially zero speed overload factor will be higher. The shallow cavity type of dual chamber hydraulic coupling cavity depth, a low torque coefficient, combined flow blocking tape is disposed, and thus the overload coefficient can be us ed with single-chamber hydraulic coupling, and Tg = 2.5 to 4.

3) fluctuations than overloading the working fluid within the fluid coupling for the crowd ring movement, and by the dynamic pressure burst into the auxiliary chamber before transmitting torque decreased, but after that, no after the auxiliary chamber, so the torque again increased, and thus relatively large fluctuations.

4) the axial force. Often fluid-filled can automatically balance the axial force; dual-chamber coupling outside the fuel supply system, oil pressure and oil line toward different reasons and therefore can not completely eliminate the axial force, but you can greatly reduce the axial force.

5) Transmission characteristics. Based on experience, the dual-chamber constant filling fluid coupling should not be vertical with a vertical with a power transfer is significantly reduced, for example, YOXD360 coupling horizontal use pass the 45KW (input speed 1500r/min), but t he vertical use but can not pass 45KW, even 37KW also passed not. The reason for this phenomenon may be affected by gravity, dual-chamber coupling two uneven filled cavity above the cavity due to the fluid-filled to reduce, so pass power reduction, following cavity fluid-filled too much, but has reached the capacity limit, so the overall pass power down. Inner wheel drive double-lumen constant filling fluid coupling can also be outer wheel drive characteristics had no significant effect.

the constant filling fluid coupling can not all oil-filled reasons

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(1) constant filling fluid coupling were full of oil, the temperature of the oil expansion will seal Dingfan, break the seal, they may even coupling housing Splitting.hydraulic hose fitting

(2) in order to start or overload time limit torque rise limit of the auxiliary chamber before the rectangular fluid coupling mostly set side auxiliary chamber, after the auxiliary chamber, at the start or overload through the shunt to the auxiliary chamber, so as to reduce the working chamber the full-charge rate to the low transmission torque. If the coupling cavity is wholly filled with oil, during normal operation, these auxiliary chamber is full of oil when starting or overload, the working fluid can not be diverted from the working chambers, which can not reduce the filling rate of the working chamber of the coupling, also unable to reduce the transmission torque coupling lost overload and delay start function. Constant filling fluid coupling fluid-filled, must be in accordance with the regulations and must not be completely filled.hydraulic fittings suppliers

(3) The test proved that constant filling flu id coupling 80% filling rate has reached the maximum transmission power, filling rate of more than 80% of the power, not only can not improve, they may reduce the power.hydraulic fittings manufacturers

prompt your circulation diversions to the characteristics of the fluid coupling

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(1) various forms of circulation and circulation diversion

  Constant filling fluid coupling the spiral cavity fluid circulation movement is usually referred to as the circulation. Under different conditi ons, circulation different form, by a circulation patterns called to another circulation patterns into circulation diversions.

(2) circulation hazards and measures to eliminate diversion.hydraulic ferrule

  Circulation diversion coupler features an unstable region, resulting torque oscillation output speed fluctuation phenomena, normal fluid coupling transmission cause harm, and therefore must seek to eliminate.

1) choose a higher filling rate coupler Practice has proved that the filling rate of the unstable region. Filling rate more hazard to the conversion of large circulation by the small circulation, the lighter, the smaller the torque ripple. Instead, the fluid-filled volume gradually decreased, gradually widening the unstable region, gradually increase the torque ripple aggravated harm. Therefore, in the selection should be minimal coupling with or without low filling rate. For examp le, when the coupling of the two specifications can pass the unified power, you should choose a smaller size, higher filling rate coupling, to avoid the impact of the unstable region.

2) the installation of a spoiler in the pump wheel and turbine installation of a spoiler is to eliminate one of the methods of the unstable region.hydraulic hose assemblies

3) the improved blade structure in the inner edge of the pump wheel and the turbine, the blade cutting angle so that the flow for large circulation movement, through the vaneless region increased to a certain extent, can also reduce the torque when the large circulation, to reduce the characteristics destabilizing effects. Some improvements in turbine design, take the length of the same blade or size composite cavity, can also abate the impact of the large circulation, reduce the coupling low speed ratio of torque.hydraulic hose fitting

what is the latching type hydraulic coupler

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what is the latching type hydraulic coupler, and the advantages and disadvantages of several types and latch-type coupler



What is the latching type hydraulic coupler, and the advantages and disadvantages of several types and latch-type couplerhydraulic hose and fittings

Latching fluid coupling fluid coupling is a coupling of the internal or external installation of locking devices. Their structural principle can be divided into the built-in centrifugal slider friction clutch-type, built-in the floating wedge friction clutch type and external centrifugal fly block friction clutch-type, built-in four kinds of hydraulic clutch.

Latching the advantages of hydraulic coupling:

1 run at rated conditions, speed 1, the fluid coupling did not slip losses, the efficiency is approximately equal to 100% energy saving.

2, changing the amount of coupler filled, the regulatable promoter in the case of constant input rotation speed, acceleration time and the transmission torque.hydraulic adapters

In the start segment by the fluid coupling play a role in the startup performance.

O verload, the friction clutch slip, play a security role; further overload, the friction clutch disengaged coupler role of effective overload protection.

Friction clutch to the friction power loss is smaller, in the lockout process temperature rise is small, small wear, longer life expectancy.

Disadvantages:

1, a coupler structure is more complicated, and the cost is relatively increased.

2, built friction clutch lock coupler, due to the friction ring sleeve bonding of friction material wear out in a long-term work, and so over the contaminated oil in the coupler, and effect on bearing life in the coupler.

Latching fluid coupling fluid coupling is a coupling of the internal or external installation of locking devices. Their structural principle can be divided into the built-in centrifugal slider friction clutch-type, built-in the floating wedge friction clutch type and external centrifugal fly block friction clutch-type, built-in four kinds of hydraulic clutch.

Latching the advantages of hydraulic coupling:hydraulic hose

1 run at rated conditions, speed 1, the fluid coupling did not slip losses, the efficiency is approximately equal to 100% energy saving.

2, changing the amount of coupler filled, the regulatable promoter in the case of constant input rotation speed, acceleration time and the transmission torque.

In the start segment by the fluid coupling play a role in the startup performance.

Overload, the friction clutch slip, play a security role; further overload, the friction clutch disengaged coupler role of effective overload protection.

Friction clutch to the friction power loss is smaller, in the lockout process temperature rise is small, small wear, longer life expectancy.

Disadvantages:

1, a coupler structure is more complicated, and the c ost is relatively increased.

2, built friction clutch lock coupler, due to the friction ring sleeve bonding of friction material wear out in a long-term work, and so over the contaminated oil in the coupler, and effect on bearing life in the coupler.

your constant filling fluid coupling how to verify the correctness of the fluid-filled

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   Because sometimes do not exactly match the actual operating conditions and calculation conditions, the amount of fluid-filled selected according to the calculation condition may not be suitable for the requirements of the actual operation. For example, transfer of power, the overload factor are likely to be different, which must pass debug to verify the correctness of the fluid-filled, the validation of the project and the method is as follows.

    Rated speed verification method: work machine running at full capacity, with the rotational speed of the the tachometer measurement coupler output shaft or work machine spindle, if nT ≥ 0.96 nd (nT coupling output speed, nd motor speed), then the coupling torque (rated torque is not less than the rated load of the work machine work work machine rated torque rated torque is less than if the coupling, the coupling can not be working at nominal operating conditions, we must increase the slip to reduce the output speed). The coupling rated output speed below standard. The description of the fluid-filled inadequate, appropriate adjustments retry.

    Overload validation experience positive a s followshydraulic fittings manufacturers

(1) working machine or constant filling fluid couplings turbine brake, check the motor overload current, and calculated torque motor overload. If within the allowable range, then the suitable coupling overload coefficient, if the motor overload torque is too large, then the the coupling liquid filled excessive amount appropriate to reduce the fluid-filled retry.china hydraulic hose

(2) the working machine or constant filling fluid couplings turbine brake, measurement speed motor overload, if the motor overload speed ndj = (0.97 ~~ 0.95) nd (nd overload coupling factor for motor rated speed) qualified. If ndj <0.95, nd, excessive amount of coupling fluid-filled if ndj> 0.97nd coupling fluid-filled volume is too small.hydraulic hose and fittings

    Extended sta rt-up time to verify authentication method is as follows: In the process of working machine starts, check the start time. If the start time is too fast, the liquid filled excessive, and if the start-up time is too long, indicating that the liquid filled amount is too small, after adjusting the liquid-filled amount retry until pass up.

Multi-drive coupling filled correctness verification method is as follows

(1) measured with an ammeter various motor running current, the current description of the amount of coupling is filled, by force; low current couplings liquid filled less force is small. Appropriate adjustments since the fluid-filled, until the current basic balance date.

(2) observation of the synchronous operation of the multi-machine drive, high output speed coupling may be appropriate to put a little oil, add a little oil or low output speed coupling appropriate.

(3) measured state coupling output speed, high output speed p ut a little oil should be slightly lower output speed should be a little oil.

the vertical hydraulic coupling which characteristics and uses

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 Capable of supporting vertical mounted vertically with vertical mechanical fluid coupling known as the vertical hydraulic coupling. Their classification with the following features:

A vertical hydraulic coupling classificationhydraulic hose

By fluid-filled way, the vertical coupling can be divided into common type, constant filling vertical hydraulic coupling and variable speed vertical hydraulic coupling; divided by type of drive, the vertical hydraulic coupling can be divided into directly connected both transmission and parallel transmission; coupling and power machine installation location points, the vertical fluid couplings can be divided into sitting and hanging stand two.

(1) sitting. The coupling is sitting above the motor.

(2) hanging legislation. The coupling is hanging below the motor.hydraulic manifold block

    Variable speed hydraulic coupling by structural constraints, only hanging Vertical did not sit Vertical, motor coupling above the working machine below the coupling.

B vertical structural characteristics of the fluid coupling

     On the surface, it seems that the vertical hydraulic coupling is used horizontal hydraulic coupling stand up, it is not true, vertical hydraulic coupling has the following characteristics:

(1) coupling down one end of the seal should be strengthened. The horizontal coupling at work, most of the working fluid to work in a loop round at the outer diameter, so the possibility of leakage of the spindle center portion. Vertical coupling mounted vertically, by gravity, down the possibility of leakage of the working fluid. To prevent leaks, must be reliable seal structure, some down one end plus casing.

(2) auxiliary chamber belowhydraulic couplings

1) before the coupling is not started, in the bottom of the auxiliary cavity is filled with the working fluid, and thus reduces the rate of the oil-filled working chamber, so that the starting torque is reduced , the start becomes smooth and soft. Conversely, if the auxiliary chamber is located at the start of the above coupling, the working chamber 100% oil-filled, so that the starting torque and increase the impact and start work machine is not conducive to a smooth start.

2) working fluid overload circulation movement, rely on dynamic pressure and gravity quickly leaked into the bottom of the auxiliary chamber, in a timely manner to protect the motor and work machine from damage when overloaded. If the auxiliary chamber at the top, overloading the liquid flow direction of movement opposite to the direction of the auxiliary chamber, the need to rely on the static pressure to overcome gravity and push the liquid to the top of the auxiliary chamber, and thus the discharge of slow, not as good as the auxiliary chamber below the coupling is sensitive.

3) should be located in the top of the fill plug and fusible plug. Should be set up for the convenience of refue ling and demolition fusible plugs, fuel plug and fusible plug at the top. Below should also be set to put the oil drain plug for oil change. Usually the refueling position of the mouth of vertical coupling is exactly the location of the 80% oil-filled.

the advantages and disadvantages of several types of locking coupler locking hydraulic coupler

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Latching fluid coupling fluid coupling is a coupling of the internal or external installation of locking devices. Their structural principle can be divided into the built-in centrifugal slider friction clutch-type, built-in the floating wedge friction clutch type and external centrifugal fly block friction clutch-type, built-in four kinds of hydraulic clutch.hydraulic couplings

Latching the advantages of hydraulic coupling:

1 run at rated conditions, speed 1, the fluid coupling did not slip losses, the efficiency is approximately equal to 100% energy saving.

2, changing the amount of coupler filled, the regulatable promoter in the case of constant input rotation speed, acceleration time and the transmission torque.metric hydraulic hose fittings

In the start segment by the fluid coupling play a role in the startup performance.

Overload, the friction clutch slip, play a security role; further overload, the friction clutch disengaged coupler role of effective overload protection.

Friction clutch to the friction power loss is smaller, in the lockout process temperature rise is small, small wear, longer life expectancy.

Disadvantages:

1, a coupler structure is more complicated, and the cost is relatively increased.bsp hydraulic fittings

2, built friction clutch lock coupler, due to the friction ring sleeve bonding of friction material wear out in a long-term work, and so over the contaminated oil in the coupler, and effect on bearing life in the coupler.

multi-drive with fluid coupling selection match

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 Multi-machine drive the adjustment coupler slip to coordinate the synchronization run thus range from the the total look coupler slip. When the selected coupler at the junction of two specifications, to be elected to the larger bsp hydraulic fittingssize of the coupling, to avoid slip fever. Commissioning application ammeter determination of the size of the load current of the motor, and accordingly adjust the liquid amount of coupler punch, until the jic hydraulic fittingsbasic balance of each motor operating current.hydraulic hose clamps

imports constant filling fluid coupling localization should pay attention to the problem

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1) Try to collect technical information. Including imports to the instructions supplied, installation plans, schedules, etc., in order to find out

Constant filling fluid

     Force coupler
Technical parameters and installation size.hydraulic hose clamps

(2) clarify the original configuration. Including motor models, technical parameters, connection size, working machine (reducer)

     Models, technical parameters, connection size.metric hydraulic fittings

(3) to ascertain the operation of the inlet coupling. Useful life, the average time between failures, whether the need to improve the ground

     Fang et al.

(4) The collection of domestic selection information. Including whether the domestic introduction of the coupler, the major domestic couplers plant samples, said

     Ming books, reference materials, and so on.

(5) the data at home and abroad to compare, analyze, identify similarities and differences between domestic products and imported products.

(6) to filter the factories import coupler localization. On the basis of the extensive collection of data, select the original imported products similar

     Domestic product, choose a high-profile strong technical force production plant as a supply-side, if necessary, conduct site visits

     And technical exchanges.

(7) Research and to develop import coupler localization program.hydraulic quick coupling

  1) can be used domestically coupler machine replacement should maximize the use of existing products, no need to be identical to the original product.

  2) the the connection size discrepancy, but the basis of performance, in consultation with the supply-side changes do a small amount of va riant.

  3) Only the sealing elements, damage to the bearings, the elastic element can be commissioned for the party matching, which the sealing element and the elastic element

     Pieces with domestic standards may not be the same, can be used to repair the means to repair or replace domestically.

  4) If there is no domestic off-the-shelf products available on the damaged parts mapping and then repair or replication peers

     Imports coupler restore function.

when the deterioration of the fluid coupling oil emulsification, how to determine whether cooler channeling liquid

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The fluid couplings work the oil emulsification deterioration, and the fundamental reason is oil mixed with water. There are three possibilities:

(1) cooler vent channeling liquid. The cooler water chamber and the oil chamber Mifeng buyan breakdown, or wall so that the oil and water mixture, resulting in the working oil emulsion.

(2) work excessive oil water content, which often happens. Sometimes drums of water at the bottom, not note that the water together with the oil added into refueling.

(3) ambient air with too much water, causing the water vapor from the air filter into the coupling body, condensed into the oil.hydraulic quick coupling

    Water into the oil, by the agitation emulsification, the oil color white. This phenomenon should first determine what causes excluded one by one, with the exclusion of the non-cause of the malfunction, the rest is the reason for the failure. Which can judge the cooler whether the channeling liquid:hydraulic hose crimping machine

(1) Check th e fuel tank, the liquid level is elevated. Le cooler occur within the vent, usually the pressure of the water side will be higher than the pressure of the oil side into the oil side of the cooling water under pressure, it is possible, and with the oil into the tank, so that the increase in the total capacity of the oil in the tank . Consequently, under the oil tank level rises, you can judge the cooler channeling liquid accident occurred.

(2) Check the cooling towers, cooling water oil slick. After cooler channeling liquid, it is possible to work the oil into the water chamber, and with the cooling water into the cooling tower, and thus check whether the cooling water in the cooling towers of the oil slick, you can judge the cooler whether the channeling liquid. Cooling water mixed with oil, and certainly cooler produce channeling liquid malfunction caused.

(3) The cooler is sometimes channeling liquid malfunction occurs, the oil enters the water, the w ater into the oil, and thus the fuel tank level change, this time should be a comprehensive analysis, many ways to find out the reasons. Usually observed in the cooler is mixed with oil, can be out more accurately determine channeling fluid cooler.hydraulic block

spiral steel spot trading platform increased competition

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1, following the spiral steel pipe spot trading platform run two weeks after Singapore global ORE (global spiral steel spot trading platform) usher in the Chinese steel enterprises join. According to the the global ORE news website, Baosteel, Valin and Minmetals of the platform has become the promoter shareholders.pipe clamps stainless steel

2, look at the operation of the spiral steel spot trading platform in China, since transactions only 7 transactions since the market opened on May 8, the number of total turnover of 856,500 tons. Zero turnover phenomenon for the past few trading days, the North Mine as president Dongzhao Bin pointed out that the current volume and declare the amount in line with expectations. Spiral steel pipe spot trading platform Global ORE have their own advantages, the two platforms will expand cooperation of mutual benefit and win-win situation for differentiated services, will also compete on service.

Platform running in line with expectationssteel clamps

3, According to global ORE news, Baosteel, BHP Billiton, Glencore may, Valin, Minmetals, Rio Tin to and CVRD has become the globalORE promoter shareholders. global ORE CEO Louis Fel, the platform is expected to start next week.

Global of ORE official start for the fledgling spiral steel spot trading platform, means more potential competition and cooperation opportunities. It is understood that the Chinese spiral steel spot trading platform running smoothly since the May 8 opening. As of May 23, the platform total reporting 137 pen 10,610,700 tons, the total number of declarations, including buying declare 48 pen, buying declare the number 4997200 tons, selling declare 89 pen sale 5,613,500 t Reportable Quantity; total 7 pen turnover, the number of total turnover of 856,500 tons, the U.S. dollar turnover of $ 114 million, RMB turnover of 21.6 million yuan.steel tubing clamps

5, for platform trading deserted phenomenon, Dongzhao Bin frankly, spiral steel pipe spot trad ing platform run two weeks, the current volume and declare the amount in line with our platform running early expectations. Few sessions appear zero turnover is a normal phenomenon in the platform running early. "

6 "Spiral Pipe transactions belonging to the trading of commodities, not only concerned with the transaction amount, should also see a single volume and turnover." Said Dong Zhaobin, spiral steel pipe trading, its large number of single turnover, turnover high, so unlike most commodity trading, as there is a large amount of the transaction amount. 7 pen deal platform, 5 pen turnover of more than 100 thousand tons, of which the 4 pen each volume of more than 16 million tons, each turnover of over 20 million U.S. dollars.

Insiders pointed out that the macroeconomic situation and the spiral steel pipe, spiral steel pipe market weakening, and other factors, will affect the trading of spot platform Spiral Pipe heat. Close to one hund red million tons of Port spiral steel inventory, and downstream by the national real estate regulation policy factors, spiral steel pipe market prices continue to decline, resulting in weak demand, which will reduce the consumption of spiral steel.

9, the spiral steel pipe trading platform as the new trading patterns, you need to market cultivation period and the process of adaptation. "Bluntly Dongzhao Bin, member companies has reached 157, covering the major players in the spiral steel pipe market, it is also can not be volume just half months as the basis of the judge the success of the platform.

10 Dongzhao Bin also said that 34 platform trading varieties, will also increase the variety of transactions in the future, especially the increase in the number of small and medium-sized mining and non-mainstream mining spot varieties. Customs, quality inspection, and other impurities of related species in the North Mine will develop specific standards

spiral industrial performance

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Spiral pipe was widely used, and still has its unique advantages. Generally, the bending properties of the helical tube is very good, because in the production process, at least to be bent 180 degrees, and the surface of the spiral tube can not produce cracks.steel tubing clamps

Not only better bending performance the reverse bending performance is also good. Reverse bending test the apex diameter than bending test should be to add a bar diameter. This experiment steps are: first bent 45 degrees forward, after the reverse bend 23 degrees, 23 degrees after reverse bending. After reverse bending experiments, spiral pipe surface is still no cracks.stainless steel tube clamps

Surfaces are generally put into use spiral cracks, scars or signs of folding. Although the surface of the spiral tube to allow a convex blocks, but can not exceed the height of the transverse ribs, and the spiral on the surface of the depth and height of the other defects nor greater than the size of the site where the allowable deviation.
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Since the helical coil is used in the transport of gas or oil, so in industrial the above requirements is also relatively high.

anti-corrosion spiral hardness

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For steel based material, the hardness is very important, and the wear resistance of the material is the relationship with hardness, the higher the hardness, then the better the abrasion resistance will. Preservat ive hardness of the helical tube is also a very important concept.
The anticorrosive spiral of hardness does not just refer to the spiral pipe against a hard object, spiral pipe elasticity, plasticity and strength toughness, etc..steel pipe clamp

Depending on the scope, the hardness can be divided into several Rockwell hardness, Vickers hardness, high-temperature hardness, microhardness. The general the anticorrosive spiral is Vickers, Rockwell, distributed three hardness way.

Now I give you, respectively, the hardness of the meaning of these three:stainless steel tube clamps

Vickers hardness is pressed into the opposing face angle of 136 °, square tapered diamond Crimp material surface, and then measure the length of the indentation diagonal and then in accordance with th e formulas to calculate the hardness of the size of a way.

Rockwell hardness the indentation measuring method is used, differing only with Vickers hardness depth of the indentation is not the same.steel pipe clamps

how reasonable choice spiral

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The choice of spiral, how to select the most suitable spiral?steel pipe clamps

Steel pipe costs accou nt for about 25% of the total investment of the pipeline. Pipe, steel grade selection principle is to meet the basic technical parameters of pressure and diameter of the premise of its investment to a minimum. The higher the grade of steel, the unit price is higher, but with the improvement of the steel grade wall thickness decreased, and thus the total weight also declined. The outbound side to the inbound side pressure is decreased, and thus can be used the same steel number and take a number of different thickness, of course, the same thickness can be used to take a number of different steel No.. The entire process of material selection is a process for gifted, the objective function for the lowest price. In the process of seeking excellent, at least the following constraints:

(1) choice of wall thickness, under any conditions, shall not be less than the required minimum wall thickness due to the transport, handling, installation and other sectors. The minimum wall thickness is determined in accordance with the rigid requirements are clearly defined in the design specification;stainless steel tubing clamps

(2) usually pipe size (thickness and steel), change no more than 4, otherwise the management will increase a lot of trouble;

(3) the number of selected steel welding skills this must be the installation sector welders and technicians master.steel cable clamps

It should be noted that, in the choice of the spiral principle of economic principles, rather than a select number of steel is higher the more reasonable.

spiral pipe production process

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How to make a spiral qualified? Spiral is what customers need? Spiral pipe production process, we need to Solenoid following these checks:
To spiral oiled marking.

Qualified steel pipe coated with oil, and to do so in order to prevent the spiral pipe corrosion, and spiral pipe marking in accordance with the requirements of the customers.stainless steel clamps

2, the flattening of the spiral edge milling

At this point we need to use the anvil machine, so that the original curled steel plate formation, but also need the edge milling machine steel plate cut into any desired width.

3, the steel pipe shearsteel tube clamps

Will be made out of steel pipe along the outer edge of the spiral curled into a tubular can.

Cutting of spiral pipe buttsteel cable clamps

Using double-sided submerged arc welding, the welded steel pipe molding is cut to a standardized length.

5, the pressure test

Hydrostatic testing machine on Solenoid test, the purpose of doing so is to protect the steel pipe to reach the standard test pressure.

Needs to be done in order to produce qualified spiral there are many, we can guarantee that each factory s spiral are compliant.

spiral fracture of the research

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For spiral pipe, although the test results of the tensile specimen is essentially independent of the sampling direction, but the test results of Charpy V impact specimens but is closely related to the sampling direction. Sampling of smooth rolling direction perpend icular to the rolling direction of the the CVN value maximum. Sampling the CVN value minimum.steel cable clamps
Spiral pipe and straight seam pipe rupture distinction the latter crack initiation or expansion drive the direction of least resistance in the same direction (axial), and thus the crack initiation and expansion must be carried out along the uranium to. Maximum driving direction (the oil to the Spiral crack or extended) and the minimum resistance direction (along the rolling direction), but in contrast, are inconsistent, so there are two possibilities of crack and expansion in the direction; first vent axis; along the rolling direction (i.e. the direction of the spiral weld).stainless steel pipe clamps

Generally considered the ratio of maximum and minimum CVN of 3 or greater. May consider changing th e determination from cracking along the rolling direction.

Spiral in some cases, although the crack initiation in the rolling direction, while the large-scale expansion of cracking but it is in the axial direction, should crack criterion is calculated from the pull along the rolling direction to consider this situation.

For spiral pipe rupture at home and abroad are just getting started, some of the test data and insights needed to rise to the height of the reason perish.stainless steel clamps

spiral weld defects

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The solenoid in the welding process may occur welding defects, so that the welding defects affect the quality of the solenoid, resulting in reduced service life of the spiral tube, or can not be used.
Under no rmal circumstances, the solenoid of weld defects and porosity, undercut and crack phenomena.steel cable clamps

The helical tube bubble defects: conducting spiral welded in the center of the weld bead, there will be the situation of bubble defects, will produce this situation? The main reason is that the form of bubbles of hydrogen in the welding process is residue inside the metal. How to solve this failure? Welding process, we need to clear weld the inside of the oil, water and other ingredients, but also need good drying and removing moisture, so that hydrogen does not remain inside the weld . Increasing the welding current in the welding process and the generation of the bubble can be avoided yet.spring steel clip

The spiral tube undercut: v-shaped groove weld edge, and along the weld centerline When said unde rcut. Usually undercut is inappropriate because of the current, voltage and welding speed, therefore, the need to control the welding process good speed, so as to effectively avoid the biting edge phenomenon.steel clip

Spiral crack: spiral cracks may be because of the direction of the spiral weld problems, in order to effectively avoid the spiral cracks in the welding process, it is necessary to strictly in accordance with the welding process to operate the job.
 

the spiral weld defects

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The solenoid in the welding process may occur welding defects, so that the welding defects affect the quality of the solenoid, resulting in reduced service life of the spiral tube, or can not be used.
Under normal circumstan ces, the solenoid of weld defects and porosity, undercut and crack phenomena.steel clip

The helical tube bubble defects: conducting spiral welded in the center of the weld bead, there will be the situation of bubble defects, will produce this situation? The main reason is that the form of bubbles of hydrogen in the welding process is residue inside the metal. How to solve this failure? Welding process, we need to clear weld the inside of the oil, water and other ingredients, but also need good drying and removing moisture, so that hydrogen does not remain inside the weld . Increasing the welding current in the welding process and the generation of the bubble can be avoided yet.stainless steel tube clamps

The spiral tube undercut: v-shaped groove weld edge, and along the weld centerline When said undercut. Usu ally undercut is inappropriate because of the current, voltage and welding speed, therefore, the need to control the welding process good speed, so as to effectively avoid the biting edge phenomenon.steel pipe clamp

Spiral crack: spiral cracks may be because of the direction of the spiral weld problems, in order to effectively avoid the spiral cracks in the welding process, it is necessary to strictly in accordance with the welding process to operate the job.
 

several commonly used steel pipe

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Use more steel pipe seamless pipe, welded pipe, spiral pipe and galvanized steel pipe several
Use more steel pipe mainly these types of seamless pipe, welded pipe, spiral pipe and galvanized steel pipe, and I will give you about the application of t hese types of steel pipe.

1, seamless pipesteel pipe clamp

Seamless pipe is a hollow section steel pipe surrounding the joints of long steel, there is no gap in the steel pipe is used in hot-rolled or cold-drawn process production molding, seamless pipe pressure is particularly good.

2, welded pipe

Welded pipe is also called welded steel pipe, after curling with a steel plate or strip, and then after the welding process is made of steel pipe, straight seam welded and spiral welded pipe both. Welded pipe production process is very simple, and the production efficiency is relatively high, but the relatively low intensity of general welded pipe are more than 800mm, the steel plate welded made.

3, spiral

The strength of the spiral tube higher than longitudinally welded pipes, can narrow billet production of large diameter welded pipe, but also can be used the same width of the blank into a different output diameter spiral pipe, but the speed of production is relatively low , the general production of larger caliber welded pipe.stainless steel tube clamps

4, galvanized steel pipe

Galvanized steel pipe galvanized steel pipe surface is mainly played the role of corrosion-resistant, able to use in acidic and alkaline environments.

In order to ensure a long service life of the spiral, often of spiral pipe rust treatment.pipe clamps stainless steel

spiral heating process

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In the spiral tube in the production process, since the main processing is performed in the hot state, and therefore heating operation is a very important process of determining the quality of the fin ished product.
Such a heating operation of the key in that the blank uniformly heated to a temperature suitable for processing. Because perforation great influence on the quality, that is, the temperature at the time of boring processing is affecting the quality of the important conditions, and it is usually to perforation processing when the billet temperature control.pipe clamps stainless steel

Heating surface or outer surface of the tube within the crack, folding and eccentricity waste improperly will become.

Perforations temperature of the blank will vary according to different materials. But mostly around 1200 ℃, the carbon content and other alloying elements are more temperature slightly lower.

The second key of the heating operation is to minimize the quantity of the oxide skin. Especially in the hot extrusion elbow, tool life and surface quality of the extruded tube, more stringent requirements.

Such as hot stove, according to their role, divided into the heating furnace and the the Reheating two; the former is used for the blank was heated from room temperature to the processing temperature; latter is used for billet reheated to the required processing during the making process temperature.steel tubing clamps

In the form of the furnace, there are many kinds, but the main use of the annular furnace. This furnace having an annular hearth, it can be slowly rotated, the blank is loaded along the direction of the diameter of the hearth from the entrance, the rotary used at the outlet of the one can be heated and are heated to the predetermined temperature of one kinds of stoves.

Spiral pipe production process is relatively slow, but the factory used spiral are in line with the production specifications of th e product.

the hydraulic press with Manifold

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Hydraulic machine in a typical manifold and a manifold block are a few basic loop, several Manifold each other together constitute the various hydraulic control system, these integrated features are as follows

Adaptable, and easy to change the circuit to meet the new requirements, a great program to shorten the manufacturing cycle of the calculation of the hydraulic press

Compact, the channel is relatively short, little corners, liquid blocking the loss of small, high efficiency of the system drive

(3) economic goodhydraulic cutting machine

4 external link pipe is less convenient, demolition, maintenance is also very convenient

With some typical and higher universal program to meet the general requirements of the hydraulic press

Hydraulic press with the scope of the Manifold Specification ng6-ng25, work pressure bit 315X10mpa brief introduction

(1) Manifold; commutation, voltage regulator and safety protection rolehydraulic couplers

2 to balance the role of integrati on; the moving Liang Pingheng and other relevant

Pump Manifold; unloadinghydraulic banjo fittings

 

hydraulic press hydraulic control systems need to meet the conditions

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Hydraulic press, hydraulic control systems need to meet the following conditions Overviewhydraulic banjo fittings

1, no leakage or minimal leakage in order to maintain the working environment clean and tidyhydraulic tube fittings


Correctly to achieve the primary cylinder and auxiliary institutions hydraulic cylinder stroke and action to meet these travel and movement speed requirements. In general, air-way close and return to the city s speed requirements quickly, in order to save time, increase productivity; the speed of the working stroke is determined according to process requirements, usually a relatively slow, in order to avoid the total power of the unit is too large.


3.
Operation should be light and flexible, safe and reliable, I wish the work just need to coordinate the actions of the subsidiary bodies, as necessary, interlocks


(4) components of the control system should long working life, difficult to damage some fragile you have to changehydraulic fittings jic

The role and classification of the throttle valve hydraulic press

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Hydraulic press throttle classified as followshydraulic fittings jic

The throttle is the structure of the most simple single most widely used flow control valve up the quantitative pump oil throttle spee d control loop or system, often in conjunction with the relief valve. In accordance with the form of manipulation of the barrier, the throttle can be divided into manual adjustment, accompanied by the throttle valve, mechanical moving parts of the trip file or cam control type trip throttle; throttle valve and check valve combination into way flow control valves, one-way trip throttle composite valvestainless steel hydraulic fittings

 

Working principle

Open the valve body inlet and outlet spool the left to open the axial triangle trough throttle channel, spool always snapping in putting on the action of the spring. Fluid flows from the inlet channels and the left end of spoolhydraulic components

Triangular slot into the channel from the outlet, outflow, leading to the act uator or tank. Adjust the handle through the push rod to the spool for axial movement can change with the flow in the orifice cross-sectional nep achieve the regulation of traffic

 

the replacement of the hydraulic machine hydraulic oil

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Hydraulic machine hydraulic oil due to the role of mechanical, physical, and chemical, its performance in the course of gradual deterioration. Oil when the oil major performance degradation to the extent of the harmful effects of hydraulic system must be replaced.hydraulic components

Fluid performance degradation and oil pollution is a direct relationship with the oil in water, air, solid particles, pollutants, and heat is caused by the additive loss, the root cause of failure and the basis of oxidation, the metal particles in the fluid oil oxidation play a catalytic role in accelerating the oil degradation.hydraulic pipe fittings


The replacement of the hydraulic system oil is usually in the following ways; be changed regularly; based on experience and observation of the oil sample to determine whether to replace the oil; oil accordance with the provisions of the performance indicators, the oil sample test results to determine whether oil. Although the first two methods is simple, but often is not enough scientific and reasonable. Replace oil in accordance with the oil change indicator functions take full advantage of the oil, but also to ensure the reliability and life, should be implemented in this way.hydraulic bolt

Need to know in using the replacement of oil by oil indicator used in the performance of the new oil, in the course through regular oil analysis to detect the performance changes, to determine the extent of oil degradation.

Extend the service life of the oil can not only save the cost for oil, but more importantly, can solve the oil resources. Some site due to pollution control measures imperfections, the hydraulic system oil pollution so severe that affect the device is working properly, and thus had to take the approach of frequent oil changes, and actually replaced the dirty oil is often the only pollution overrun, and the physical and chemical properties did not reach the extent of deterioration.
 

hydraulic straightening machine hydraulic system repair pipe work characteristics

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An effective energy-saving measuresmetric hydraulic fittings

The hydraulic system accumulator set in the main loop, whose role is to provide large flow of oil in each pai r of hydraulic cylinders stretched out, returned, and reduce the hydraulic pump displacement of the accumulator and electric contact pressure gauge electromagnetic relief valve and check valve used in conjunction with the hydraulic pump in a correction cycle, only about working load, the rest of the time are unloading state. This is because the general long-straightening tube meters, the distance between the correction roller with the first pair of corrective roll m, the hydraulic cylinder when the steel pipe into the host after all, only by correcting a roll of steel pipe exert corrective force, does not require flow, the pressure of the main circuit soon reach electric contact pressure gauge pressure contact settings for adjustment of the maximum correction force, high-pressure contact conduction, instruction solenoid is energized by the electromagnetic relief valve hydraulic pump unloading. Only when the low pressure of the main circuit to the electric contact pressure ga uge low-voltage contacts for adjustment of the settings according to the lower limit of the correction only force, low-voltage contact conduction, instruction electromagnet power failure, the hydraulic pump was re-load work. In addition, the hydraulic system in the air during operation of the non-correction tube, the solenoid is energized, the pump has been in the unloading state, so the actual energy consumption of the system is very small.

Second, the photoelectric switch instruction controlhydraulic quick coupling

The system uses the position of the photoelectric switch feelings correction steel pipe road works reliably, and fast to install, easy to adjust, and long life characteristics

Third, the technical design of hydraulic manifold blockshydraulic hose crimping machine

All hydraulic control valves are used in the hydraulic system connection plate, placed in the hydraulic manifold block integration of the hydraulic manifold block by block valve block installation, assembly, adjustment, replacement, repair and maintenance are very convenient. Valve block software design, a map, not only greatly improve the design efficiency, but also to ensure the quality of the design, reducing the consumption of the valve material, and indirectly reduce energy consumption.

the six characteristics of the manual hydraulic forklift introduced

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A manual hydraulic stacker doors frame a heavy column of steel, cold roll forming. The door frame is stronger and more secure, mobile and flexible, easy to operate and effort.hydraulic testing machine

Manual hydraulic stacker cylinders using high-precision grinding tube, imported oil seals, one spool for easy removal and maintenance; relief to take the foot type, smooth landing speed, security is greatly enhanced.

Manual hydraulic stacker with advanced spray technology, to improve the appearance of the product while increasing the durability of a manual hydraulic stacker.hydraulic hose sleeve

The manual hydraulic stacker is a pollution-free manual hydraulic stackers, with smart transportation, operational flexibility, small turning radius.

5 Manual hydraulic stacker apply to the production plant, production plant, warehouse storage, local stations, terminals, airports and other places, especially suitable for fire, explosion-proof requirements to use the premises, such as the printing shop, various types of oil tanks, chemical storage and other places.metric hydraulic fittings

6. Manual hydraulic stacker with the tray carton, container unit of transport not only reduces the collisions, scratches, etc., but also reduces the workload and stacking area and greatly improve efficiency.

 

Slider the hydraulic works

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The slider works on the hydraulic presshydraulic bolt

Fast downstream of the solenoid is energized, the pilot valve and the cylinder main valve left intervention system, pilot-operated check valve is opened on the hydraulic cylinder rapid downstream. At this time, the oil flow in the system as follows

Into the oil; hydraulic pump - sequence valves - on the cylinder valve - check valve - on the hydraulic cylinder chamberhydraulic adapter fittings

Back to the circuit: the cylinder valve on the hydraulic cylinder - pilot controlled check valve - inferior vena - laid-off valve - tank

On the slider under its own weight to decline rapidly. A smaller flow of the hydraulic pump, when the oil tank via hydraulic check valve inflow on the hydraulic cylinder chamber.

Slow pressure from the slider contacts the workpiece, this time on the hydraulic cylinder on the cavity pressure, the pilot-operated check valve is closed, the compression speed will be det ermined by the hydraulic pump flow, fluid flow and rapid downstream when the same

3 Paul rolling. When the system pressure to the pressure relay air role, then issue the electrical signal to control the electromagnet power failure, the pilot valve and the cylinder valve in the system into packing. The pressure is controlled by time relay in the electrical control circuit 0min-24min within the regulation. Packing addition to the hydraulic pump unloading at a lower pressure when there is no fluid flow in the system. Hydraulic pump unloading oil are as follows

Hydraulic pump - sequence valves - Business cylinder valve - hydraulic cylinder valve - tankhydraulic testing machine

4 quickly return to the time relay delay to pressure to spend the night, the solenoid is energized, pilot valve right intervention system, pressure relief valve so that the hydraulic cylinder valve on the right of access system. At this time, the pilot controlled check valve is opened, on the hydraulic cylinder rapid return


(5) in situ stopped. On the slider rise to the block hit the in situ limit switch, solenoid power, the pilot valve and hydraulic cylinder valve are in the median. At this time, the hydraulic cylinder stops moving. Hydraulic pump at a lower pressure to write and unloading.
 

the hydraulic system in the installation of pollution control

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Hydraulic system during the installation of pollution control is also very important, following details:

1 for the manufacture of pollution control

Parts o f the process generally requires a "wet processing" method, that is, all processing operations should be dropping a lubricating fluid or cleaning fluid, to ensure the quality of surface processing.

Two components, parts cleaninghydraulic hose crimping machine

New hydraulic parts prior to assembly, the old hydraulic contaminated must be washed before use, the cleaning process should do the following:

1) hydraulic assembly and disassembly, cleaning should be consistent with national standards for clean room. Conditions, if any, operating room, preferably pressurized, so that the indoor pressure is higher than outdoors, to prevent indoor air pollution by dust; subject to conditions, but also the operating room should be incommunicado, generally does not allow the hydraulic parts assembly and machining occasionally fitter in the same room, should be the abso lute prohibition of decomposition and assembly of hydraulic components in the open shed, debris or warehouse.hydraulic block

Disassembly of hydraulic parts, the operator should wear the uniform fiber is not easy to fall off, work caps, to prevent the fibers, dust, hair, dander and other scattered into the hydraulic system caused by human pollution. Smoking, eating in the operating room is strictly prohibited.

2) hydraulic cleaning should be dedicated cleaning stage. Subject to conditions, but also to ensure the cleanliness of the temporary table.

3) The cleaning fluid is allowed to use the same grades of kerosene and hydraulic system oil hydraulic oil.hydraulic manifold

4) After cleaning the parts are not allowed to wipe with cotton, hemp, silk and chemical fiber fabrics, to prevent the shedding of fiber contaminat ion parts. With dust particles are not allowed to Part blast (within the Paper Tiger Paper Tiger), when necessary, use compressed air parts.

5) After cleaning the parts are not allowed on the land, concrete, flooring, fitters and assembly work on stage, but should be placed in a container with a lid and into the hydraulic oil.

6) have been cleaned but it would not assembled parts should be placed in the anti-rust oil preservation, damp areas and season to pay attention to anti-rust.

3 hydraulic parts in the assembly of pollution control

1) the hydraulic component assembly should be used "dry assembly" method, that is, after cleaning the parts, in order not to make the cleaning fluid left in the part surface and affect the assembly quality of the part surface is dry before assembly.

2) assembly of hydraulic components For the fight against the prohibition of the use of iron hammer beat, you can use a wooden hamm er, rubber hammer, copper hammer and brass rod.

3) assembly allowed to take the gloves are not allowed to use the fiber fabric, clean the mounting surface to prevent fiber dirt invasive valve.

4) the components of the hydraulic assembly finished components shall be carried out to install, should they all ports blocked with plastic stopper.

4 hydraulic transport of pollution control

Hydraulic components, the components of transport should pay attention to dust, rain, long-distance transport, especially the maritime transport of hydraulic components must use water-resistant paper or plastic wrapping paper, and put the right amount of desiccant, and does not allow rain water, seawater exposure hydraulic parts. Before packing and unpacking should carefully check all ports blocked with a stopper to take timely remedial measures in ports by the light pollution and serious pollution of hydraulic components must be again decomposed cleanin g.

5 hydraulic system assembly of pollution control

1) The hose must be in the pickling rinse before receiving the actuator before installation to use compressed air blowing. Midway demolition hose to bandage a good hose connector.

2) pipe connector install clean kerosene cleaning and drying with compressed air. Need the raw material with sealed fittings, wrapped around the raw material with time to pay attention to two points: First, the the cis thread direction of winding; Second, the raw material with not more than the threaded end, otherwise, the excess in the tightening process will be thread cut into the system.

3) The hydraulic piping installation of pollution control

Hydraulic pipeline is an important part of the hydraulic system, but also the workload of large-site construction projects, and pipeline installation is vulnerable to pollution. Therefore, the hydraulic pipe pollution control is an important element of the hydraulic system cleaning.

Pipeline installation to clean up the internal particles of impurities, the absolute prohibition of the stones, rags and other debris left in the tube. Pipeline installation process if a long time interrupted, must seal the tube mouth to prevent debris intrusion. In order to prevent welding slag, oxide scale into the system it is recommended that the pipeline welding

The gas shielded arc welding, such as argon arc.

Pipe installed to go through pickling, flushing system, the absolute prohibition of hydraulic components will be connected into the pipeline before processing circuit and even incorporated into the hydraulic system to prevent pollutants invasive tube actuator, control parts.

Pipe pickling is divided into two kinds of slot pickling and circulation pickling, pickling techniques and recipes and there are many. System Flush pickling work after the end of the hydraulic system put into use bef ore the last cleaning measures must ensure that all pipes and hydraulic components rinse to achieve the required cleanliness. System flushing should be divided into two steps. The first site to install the pipe connected into the loop rinse to achieve the requirements of cleanliness and then the control components of the control valve, shunt access loop to the cleanliness rear qualified for flushing.

6 hydraulic fuel tank

Hydraulic tank oiling must check the cleanliness of its internal failure when cleaning; oil by adding to verify its cleanliness; oiling must be filtered, do not allow the oil is injected directly into the hydraulic tank.

7 System Recovery

The system pickling, after washing all the components, piping required with a working circuit. This process should pay particular attention to the cleaning of fittings After connecting, try to avoid demolition, necessary to pay attention to when tied with a clean cloth to ensure that the pipe joints, pipe mouth is not contaminated.

The hydraulic system of pollution control throughout the entire processing and assembly process, every step to take cleaning measures to minimize the hydraulic system contamination, ensure that the hydraulic system can be safely and reliable operation requires the operator.

the hydraulic system contamination hazards and the reasons for

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The hydraulic drive technology in the 18th century, was born after rapid development. Today, hydraulic transmission equipment has been widely used in all walks of life, particularly in modern lar ge-scale production lines, engineering machinery. The hydraulic drive technology has its incomparable advantages of this is the main reason for it to the rapid development. The hydraulic transmission equipment at the same time, it has its weak side, where low-pollution ability is prominent weakness. According to the information recorded, 70% to 80% of the hydraulic failure caused by oil pollution. To ensure normal and reliable operation of the hydraulic system must be kept clean of the entire hydraulic system.hydraulic manifold
Pollutants mixed with the hydraulic system will accelerate the wear of hydraulic components, burns, or even destroy, or cause the action of the valve failure, or due to the noise; pollutants can clog the orifice or throttle gap of hydraulic components, change the hydraulic system performance cause movement disorders or even total failure, resulting in malfunction caused the accident; dust pa rticles in the hydraulic cylinder will accelerate the damage of the seal inside the cylinder surface of the strain, so that leakage increases, the lack of thrust or movement instability, crawling, slowed down, resulting in an unusual sound and vibration; may also cause filter clogging, hydraulic pump oil absorption difficulties, back to the oil poor cavitation, vibration and noise, severe blockage because of the resistance is too large to filter breakdown complete loss of function as a filter, resulting in a vicious cycle of the hydraulic system.hydraulic hose manufacturers

There are many reasons of contamination of the hydraulic system from contamination mechanism look, divided into two kinds: (1) production of potential pollutants in the installation process for chips, burrs, sand, paint, abrasives, welding slag, rust films and solid particles such as dust, Hydraulic System, this stage must be to strengthen management, to ensure that after installation of the hydraulic system can operate safely and reliably.hydraulic hose adapters

 

hydraulic system design how to reduce the power loss

Power loss of the hydraulic system on the one hand will cause the loss of energy, the overall efficiency of the system decreased, on the other hand, this part of the lost energy will be transformed into heat, so that the hydraulic oil temperature, oil deteriorati on, resulting in hydraulic equipment failure. Therefore, the design of hydraulic systems, to meet the requirements under the premise, but also give full consideration to reduce system power loss. Let us from the following aspects to explain in detail:hydraulic hose adapters

First, from the power source - pump to consider, taking into account the diversification of the actuator working conditions, sometimes the system needs a high flow, low pressure; sometimes need a small flow and high pressure. So I chose to limit the pressure variable displacement pump is appropriate, because this type of pump flow varies with the change of system pressure. When the system pressure is reduced, the flow is relatively large, to meet the rapid stroke of the actuator. When the system pressure increases flow rate is reduced accordingly, able to meet the working stroke of the actuator. This meets the requirements of the actuator, but al so make the power consumption is quite reasonable.hydraulic flanges

Secondly, if the actuator has a speed control requirements, then choose the speed control loop, it is necessary to meet the requirements of the governor, but also to minimize power loss. Common speed control loop: the throttle speed control loop, the volume speed control loop Volume Throttling governor loop. Throttle speed control circuit power loss, low-speed stability is good. Neither overflow losses and volume speed control loop, there is no throttling losses, high efficiency, but low-speed stability. If you want to meet both requirements, the volume of the differential pressure variable displacement pump, and throttle throttle speed control loop can be used, and the throttle at both ends of the pressure difference as small as possible, in order to reduce the pressure loss.

Third, the hydraulic oil flows through the various type s of hydraulic valves, the inevitable existence of pressure losses and flow losses, this part of the energy loss in a large proportion of total energy loss. Therefore, a reasonable choice of hydraulic, adjust the pressure valve, pressure is also an important aspect of reducing power losses. The flow control valve according to the system flow rate adjustment range to select and to ensure that its minimum stable flow can meet the requirements, the pressure valve of the pressure to meet the normal work of the hydraulic equipment, try to take a lower pressure.hydraulic fittings

Fourth, a reasonable choice of hydraulic oil. Hydraulic oil flow in the pipeline, will appear in the viscosity, the viscosity is too high, will have a larger internal friction, causing the oil fever, while increasing the resistance of the oil flow. When the viscosity is too low, it could easily lead to the leakage will reduce the efficiency of the system volume, therefore, generally select the appropriate viscosity and viscosity-temperature characteristics of a good oil. In addition, when the fluid flow in the pipeline, along the pressure loss and the local pressure loss, and try to shorten the pipeline design pipeline, while reducing elbow.

Slider hydraulic works

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hydraulic hose cutting machine - China Manufacturer

Thank you for inquiry my hydraulic hose cutting machine, Tel : +86-0574-88461212, E-mail:ph@ph-fitting.com

http://www.ph-fitting.com/key-hydraulic-hose-cutting-machine-47/

The slider works on the hydraulic presshydraulic bolt

Fast downstream of the solenoid is energized, the pilot valve and the cylinder main valve left intervention system, pilot-operated check valve is opened on the hydraulic cylinder rapid downstream. At this time, the oil flow in the system as follows

Into the oil; hydraulic pump - sequence valves - on the cylinder valve - check valve - on the hydraulic cylinder chamberhydraulic adapter fittings

Back to the circuit: the cylinder valve on the hydraulic cylinder - pilot controlled check valve - inferior vena - laid-off valve - tank

On the slider under its own weight to decline rapidly. A smaller flow of the hydraulic pump, when the oil tank via hydraulic check valve inflow on the hydraulic cylinder chamber.

Slow pressure from the slider contacts the workpiece, this time on the hydraulic cylinder on the cavity pressure, the pilot-operated check valve is closed, the compression speed will be det ermined by the hydraulic pump flow, fluid flow and rapid downstream when the same

3 Paul rolling. When the system pressure to the pressure relay air role, then issue the electrical signal to control the electromagnet power failure, the pilot valve and the cylinder valve in the system into packing. The pressure is controlled by time relay in the electrical control circuit 0min-24min within the regulation. Packing addition to the hydraulic pump unloading at a lower pressure when there is no fluid flow in the system. Hydraulic pump unloading oil are as follows

Hydraulic pump - sequence valves - Business cylinder valve - hydraulic cylinder valve - tankhydraulic testing machine

4 quickly return to the time relay delay to pressure to spend the night, the solenoid is energized, pilot valve right intervention system, pressure relief valve so that the hydraulic cylinder valve on the right of access system. At this time, the pilot controlled check valve is opened, on the hydraulic cylinder rapid return


(5) in situ stopped. On the slider rise to the block hit the in situ limit switch, solenoid power, the pilot valve and hydraulic cylinder valve are in the median. At this time, the hydraulic cylinder stops moving. Hydraulic pump at a lower pressure to write and unloading.