Science, Maths & Technology
Full mould casting (evaporative pattern)
...system and the metal. Yields are slightly higher (50–80%) than the conventional methods, since risers are seldom needed. Typical products include automotive castings such as camshafts, crankshafts, ball-valve casings and caterpillar tracks. Materials: All castable materials with casting temperatures above that required to vaporise the polystyrene (≃700° C). The...