Introduction to investment casting manufacturing technique

Investment casting, also known as Lost-Wax, is a long-standing metal forming process. The earliest known Lost-Wax was discovered around 5000 years ago in ancient Egypt and the Mesopotamia, but it has not been passed down. The copper ban during the Spring and Autumn period was the earliest known lost wax casting method in China .

The first step is to make a casting mold, using the mold to inject wax into the mold to form a wax pattern. Then, the wax pattern is pasted into a pouring pattern tree according to the casting process, and the whole pouring pattern tree is made into a silica sol shell. After dewaxing, the whole shell becomes a cavity, and the cavity shell can be poured with molten steel after calcination. After cooling, the steel material product is formed. Then, through processes such as cutting and grinding, sandblasting, heat treatment, correction, welding repair, electroplating, and machining, the casting products are formed.

Copper Prohibition - Spring and Autumn Period and Warring States Period

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