Precision casting process, also known as wax loss casting production process, produces products with high precision and complex styles that are basically equivalent to the styles of components. There are few or directly applicable products that require further production and processing. Therefore, investment casting process is a type of professional production process for molding. As early as the 1940s, the processing technology of investment casting was widely used, such as in the production of copper lion products, copper prohibited products, etc. Nowadays, the processing technology of investment casting is applied in various industries, such as transportation, aerospace, energy, pharmaceuticals, etc., and the progress rate is rapid. 

According to the precision casting process, not only can small castings be produced, but also large castings can be produced. The contour dimensions of the investment casting products produced by this method have already been close to 1.9mm, but the wall thickness is even thinner than 2mm. In addition, precision casting processing technology is constantly developing towards precision direction. In addition to the linear dimensional tolerance of casting products, the main parameters that can achieve high geometric dimensional tolerances of casting products. The surface roughness of castings produced by precision casting technology is also very low, which is already close to Ra0.3um. Due to these advantages of precision casting, it has been widely used in China's industry. 

In addition, according to this precision casting process, it can save a lot of mechanical processing and manufacturing time, reduce the entire production cycle time of casting products, and further improve the utilization rate of casting raw materials, reduce the cost of casting products, and produce high-quality casting products.