Casting process and quality requirements of wear - resistant castings

- Feb 27, 2019-

Wear-resistant casting during the process of design, in addition to according to the working conditions and the metal material performance to determine the casting geometry shape, size, must also be from the perspective of the casting alloy and casting characteristics to consider the rationality of the design, namely the obvious size effect and solidification, shrinkage, stress and other problems, in order to avoid or reduce the casting composition segregation, deformation, cracking and other defects.

 

Reasonable casting process is required for wear - resistant castings.That is, according to the casting structure, weight and size, casting alloy characteristics and production conditions, choose the appropriate parting surface and molding, core method, reasonable setting of casting bar, chill, riser and casting system.To ensure quality casting.

 

The quality of the raw materials used for the wear - resistant castings.The quality of metal charge, refractory material, fuel, flux, metamorphism agent, casting sand, molding sand binder, coating and other materials is not up to standard, which will cause casting defects such as air hole, pinhole, slag inclusion and sand sticking, which will affect the appearance quality and internal quality of the casting. In serious cases, the casting will be scrapped.In process operation, reasonable process operation rules should be formulated to improve the technical level of workers so that the process rules can be correctly implemented.www.wuxiorient.com