Guide to Casting and Molding Processes

摘要

The versatility of metalcasting is demonstrated by the number of casting and molding processes currently available. This range of choices offers design engineers and component users flexibility in their metal forming needs (Fig. 1). Each process offers advantages when matched with the proper alloy and application. When reviewing these processes and determining which best suits your needs, consider the following: required surface quality; required dimensional accuracy; type of pattern/corebox equipment; cost of making the mold(s); how the selected casting process will affect casting design. Molding processes can be broken into four general categories: sand casting processes; permanent mold processes; ceramic processes; rapid prototyping. Following is a look at the most common casting processes.