Flange casting first proposed in 1809 by British Erchardt, until the early twentieth century flange gradually been adopted to
promote. China in the 1930s began to use the flange, cylinder castings such as iron pipes, copper sleeve, cylinder, bi-metal steel back
copper sleeve, use casting. Seamless Gang Special Steel pipe blank, paper machine drying drum production in heat-resisting steel roller,
flange casting method with very effective.
The current system has a high degree of mechanization and automation of the flange casting
machine, built a large number of production mechanization flange Ductile Iron Pipes workshop. Almost all casting alloys can be used for
the flange casting production, the minimum inner diameter of the flange casting up to 8 mm, maximum diameter of up to 3m, casting the
maximum length of up to 8m, the weight of the flange casting range of a few cattle to tens of thousands of cattle (a few tenths of
kilograms to tons).
Flange casting, liquid metal filling the mold and solidified in the rotating case, and thus the flange casting has the following
characteristics: liquid metal in the mold to form a hollow cylindrical free surface, thus can not type the core will be able to cast a
hollow casting, greatly simplifies the sleeve, the tube casting production process, so that the casting process is greatly simplified,
high productivity, low cost; flange force due to the rotation of the liquid metal. flange casting process can improve the ability of the
metal charge and the town of mold, some of the less liquid alloys and thin-walled castings are available flange casting method of
production; the role of the flange force to improve the conditions of feeding, gas and non- metal mixed easily discharged from the
liquid metal is more dense, so the organization of the flange casting shrinkage (shrinkage), porosity, inclusions and fewer defects,
good mechanical properties; elimination or significant savings in metal casting system and riser consumption, high utilization of metal;
没有评论:
发表评论