The quality of raw materials for casting The quality of metal charge, refractory materials, fuels, fluxes, modifiers and foundry sand, sand binders, coatings and other materials are substandard, which will cause pores, pinholes, slag inclusions, Aluminum alloy machining Manufacturers sand sticking and other defects in the castings and affect the appearance of copper castings The quality and internal quality will cause the casting to be scrapped in severe cases.
There must be a reasonable casting process That is, according to the structure, weight and size of the copper casting, the characteristics of the casting alloy and the production conditions, the appropriate parting surface and shape, the core making method are selected, and the casting rib, cold iron, riser and gating system are set up reasonably.
Design process of copper castings When designing, in addition to determining the geometric shape and size of the part according to the working conditions and metal material properties, the rationality of the design must also be considered from the perspective of the casting alloy and casting process characteristics, that is, the obvious size effect and solidification and shrinkage , Stress and other issues to avoid or reduce the occurrence of defects such as component segregation, deformation, and cracking of copper castings.
The quality of copper castings depends on the following: To ensure high-quality castings. Process operation It is necessary to formulate reasonable process operating procedures, improve the technical level of workers, and enable the correct implementation of process procedures.
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