1. Based on type of mould
- Casting in expandable mould: These are used only once and must be broken upto free the solidified castings.
- Casting in permanent mould: These last upto several castings.
2. Classification based on the purpose of casting
- Ingot, Slab and Billet casting: Metal is wrought alloy, in preparation for rolling, extrusion for forging, it is cast into a simple shape suitable for further working.
- Remelt ingots: These are simple shapes, cast from melts of closely controlled and analyzed composition, and easy to transport and load into the furnaces of secondary manufactures.
- Shape Casting: The melt is cast into final shape which needs only cleaning and/or machining to produce a finished part. This is a typical secondary manufacturing process.
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