Guide to Casting and Molding Processes AFS（铸造和成型过程指南 AFS）.pdf

Guide to Casting and Molding Processes Understanding the ‘metalcasting’ basics can help you design for manufacturability and utilize processes that meet your specifi c requirements. An ECS Staff Report he versatility of metal- shaping a refractory material Tcasting is demonstrated Considerations for Selecting a Casting Process to form a cavity of desired by the number of casting and • Required quality of the casting surface shape such that molten metal molding processes currently • Required dimensional accuracy of the casting can be poured into the cavity. available. This wide range of The mold cavity needs to re- choices offers design engi- • Number of castings required per order tain its shape until the metal neers and component users • Type of pattern and corebox equipment needed has solidifi ed and the casting enormous fl exibility in their • Cost of making the mold(s) is removed. This sounds easy metalforming needs (Fig. 1). • How the selected process will affect the design of the casting to accomplish, but depend- Each process offers dis- ing on the choice of metal, tinct advantages and benefi ts certain characteristics are when matched with the proper