Investment casting is also known as lost wax casting, a casting process with little or no cutting. It is an excellent process technology in the casting industry, and of wide application. Investment casting is suitable for casting of various types and alloys.
Moreover, the dimensional accuracy and surface quality of the castings produced are higher than other casting methods. Even the castings that are difficult to cast by other casting methods, complex, high temperature resistant, and not easy to process can be cast by investment casting.
The so-called investment casting process simply means using fusible materials (such as wax or plastic) to make a fusible model (referred to as the investment model), coated with several layers of special refractory coating.
After drying and hardening, forms an integral shell, and uses steam or hot water to melt the mold from the shell, and then puts the shell in the sandbox, fills it with dry sand to make the mold, and finally put the mold into the high-temperature roaster (if the high-strength shell is used, the shell after demolding can be directly fired without molding).
After the mold or shell is roasted, molten metal is poured into it to obtain a casting.
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