Investment casting refers to a fusible model made of fusible materials, coated with several layers of special refractory coatings, dried and hardened to form an integral shell, and then steam or hot water is used to remove the mold from the shell. Melt out the model, then put the mold shell in the sand box, fill it with dry sand molding around it, and finally put the mold into the roasting furnace for high temperature roasting, after the casting mold or shell is roasted, pour molten metal in it Get castings.
The products obtained by investment casting are precise and complex, close to the final shape of the parts, and can be used directly without processing or with little processing. The application is very wide. It is not only suitable for casting of various types and alloys, but also produces castings with higher dimensional accuracy and surface quality than other casting methods, and even complex, high temperature resistant and difficult to process castings that are difficult to be cast by other casting methods. All can be cast by investment casting.
At present, the investment casting forming process in the world is developing rapidly and widely used. From the current situation, the future development trend of this process is that the casting products are getting closer and closer to the parts products. The traditional precision castings are only used as blanks and are no longer suitable for Rapid changes in the market. The complexity and quality of parts and components products are getting higher and higher, the research and development methods are getting stronger and stronger, and professional cooperation has begun to emerge. The application of CAD, CAM, and CAE has become the main technology for the development of parts and components.
From the analysis of the current development situation, the application of investment casting technology is very extensive, and its future development prospects are expected to be broad.