博文

目前显示的是 九月, 2016的博文

Advantage of centrifugal casting

Advantage: 1.There is almost no metal consumption at inject system and gating system, so production rate improved much. 2.There is no core when produce hollow castings so greatly improve the metal filling capacity, lower the ratio of wall thickness to length or diameter and simplify the process of sleeve and pipe production. 3.High density, less of defects like pores and slag, high mechanical property. Easy to manufacture cylinder or sleeve type composite metal castings such as steel back copper sleeve, bimetallic roller, thin wall castings.

Features of centrifugal casting

1 Castings can be made in almost any length, thickness and diameter. 2 Different wall thicknesses can be produced from the same size mold. 3 Resistant to atmospheric corrosion, a typical situation with pipes. 4 Mechanical properties of centrifugal castings are excellent. 5 Only cylindrical shapes can be produced with this process. 

Centrifugal casting process

molten metal is poured into a hollow cylindrical mold spinning about a horizontal axis. The centrifugal force distributes the molten metal and shapes it into a tubular/cylindrical forms. The high  forces involved in this casting method means that the less dense materials including impurities are forced into the center where they can be subsequently removed and gas related defects and shrinkage porosity are reduced thus parts made from centrifugal casting exhibit denser, closer grained structure with improved physical qualities such as tensile strength, yield strength, elongation and uniformity.