There are many classification methods for castings: according to the different metal materials used, they are divided into steel castings, cast iron parts, cast copper parts, cast aluminum parts, cast magnesium parts, cast zinc parts, and cast titanium parts. Each type of casting can be further divided into different types according to its chemical composition or metallographic structure. For example, cast iron parts can be divided into gray iron castings, ductile iron castings, vermicular graphite iron castings, malleable iron castings, alloy cast iron fittings, etc.; according to different molding methods, castings can be divided into ordinary sand castings, metal castings, and die castings. , centrifugal castings, continuous castings, investment castings, ceramic castings, electroslag remelting castings, bimetal castings, etc. Among them, ordinary sand castings are the most widely used, accounting for about 80% of all castings. Non-ferrous metal castings such as aluminum, magnesium and zinc are mostly die-casting parts.
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