Non-ferrous metal casting is a method of smelting metal, manufacturing a mold, pouring molten metal into the mold, and solidifying to obtain a metal part blank with a certain shape, size and performance. Non-ferrous metal casting blanks are almost formed, so that the purpose of avoiding machining or a small amount of machining reduces the cost and the production time to a certain extent. Non-ferrous metal casting is one of the basic processes of the modern device manufacturing industry. Compared with traditional processes, the non-ferrous metal casting process has a faster cooling rate of the metal mold, a denser structure of the casting, and can be strengthened by heat treatment.
The mechanical properties are higher than those of the sand casting. 15 %about. In addition, the quality of the non-ferrous metal casting is stable, the surface roughness is better than sand casting, and the reject rate is low. And the whole process has good labor conditions, high productivity, and easy for workers to master, which provides a good basis for casting high-quality castings. As for non-ferrous metal castings, like other castings, it must meet the requirements of some general technologies. The first is the material requirements, mainly hardness, tensile strength, elongation, and impact toughness.
There is also dimensional accuracy and shape and position accuracy. Different non-ferrous metal castings have different requirements. Different size and geometric tolerance standards and different tolerance levels gear shaft Manufacturers are used. According to the use requirements, acceptance requirements for other defects of non-ferrous metal castings, such as pores, trachoma, shrinkage, shrinkage, slag inclusion, sand inclusion, and cracks. Since there is a possibility of defects, of course, the requirements for defect repair of non-ferrous metal castings are also put forward.
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