Casting is a process in which molten metal is poured or injected and allowed to solidify in a suitably shaped mold cavity. During or after cooling, the cast part is removed from the mold and then processed for delivery.
Casting processes and cast-material technologies vary from simple to highly complex. Material and process selection depends on the part's complexity and function, the product's quality specifications, and the projected cost level.
Permanent Mold castings are produced by forcing molten metal into a static mold consisting of a clamped metal assembly. Many pressure-type castings, aircraft and missile castings, automotive pistons, pump bodies, and high-quality castings of any kind (even if the quantities required are small) are produced by the permanent-mold method. Advantages include: price, superior as-cast dimensional tolerance and surface finish, and improved mechanical properties compared to sand-casting. Although the initial cost of permanent molds is higher than that for sand casting pattern equipment, the lower cost of casting results in net savings over other casting methods. KEYWORDS for this process: casters, moulds, moulding, moulders, molds, molders, molding
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