Preparation of salt core used for aluminum die-casting, involves heating particulate salt mixture, mixing and homogenizing semi-solid salt paste, injecting and solidifying semi-solid salt paste to salt core-shaped cavity of core mold

摘要

A particulate salt mixture (1) is heated to a processing temperature which is between solidus temperature and liquidus temperature of salt mixture to form semi-solid salt paste (1'). The semi-solid salt paste is mixed and homogenized. The semi-solid salt paste is injected at processing temperature to salt core-shaped cavity (5') of a core mold (5). The semi-solid salt paste is solidified, to obtain salt core.