Stainless steel precision casting is a special casting method compared with the traditional casting process. It can obtain relatively accurate shape and high casting accuracy. In addition, the product is precise, complex, close to the shape of parts, can be directly used without processing or little processing, is a kind of approximate molding of the casting industry advanced technology.

Generally, the dimensional accuracy of stainless steel precision casting parts is affected by casting structure, casting material, mold making, shell making, roasting, pouring and other factors, any one of which is unreasonable setting and operation will make the shrinkage rate of the casting change, resulting in the deviation of the dimensional accuracy of the casting and the requirements.

Investment stainless steel precision casting means that the fusible model is made of fusible material, coated with several layers of special refractory coating, dried and hardened to form a whole shell, and then the model is melted off with steam or hot water from the shell, and then the shell is placed in a sand box, the dry sand molding is filled around it, and the cast is baked in a roaster through high temperature. The cast or shell is roasted and molten metal is poured into it to obtain the casting.

The products obtained by investment precision casting are precise, complex, close to the shape of parts, and can be directly used without processing or little processing. It is an advanced technology of near-net shape formation. It is an excellent technology in the casting industry, and its application is very wide. It is not only suitable for casting of various types and various alloys, but also produces castings with higher dimensional accuracy and surface quality than other casting methods. Even the complex, high temperature resistant and not easy to process castings that are difficult to be cast by other casting methods can be cast by investment precision casting.