MFE 201 Lecture Notes - Lecture 20: Near Net Shape, Sand Casting, Die Casting
31 Mar 2016
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Document Summary
The solidi cation process can be classi ed according to the engineering material being processed: metals ceramics (speci cally glasses) polymer and polymer-matrix composites. Casting: a process in which molten metal ows by gravity or other force into a mold where it solidi es in the shape of the mold cavity. Casting is one of the oldest shaping processes, dating back 6,000 years. Ingot: a large casting that is simple in shape and intended for subsequent reshaping by processes such as rolling or forging. Shape casting: the production of more complex geometries that are much closer to the nal desired shape of the part or product. Net shape: after casting, no further manufacturing operations are required to achieve the required geometry and dimensions of the parts. Near net shape: after casting, some additional shape processing is required (usually machining) in order to achieve accurate dimensions and details.
