Investment Casting is a fusible material made of fusible material, on which a number of layers of special refractory coating, after drying and hardening to form a whole shell, and then steam or hot water from the shell Melt the model, and then put the shell in the sand box, filled with dry sand in its surrounding shape, and finally the mold into the roasting furnace after high temperature roasting, casting or shell by roasting, pour molten metal in which Get cast.
The precision welding of the products obtained by precision casting is very close to the final shape of the parts, which can be used without processing or very little processing. It is an advanced process of near net forming. It is an excellent process technology in the casting industry. Application is very extensive. It is not only suitable for all types, all kinds of alloy casting, and to produce the casting size accuracy, surface quality than other casting methods to be high, and even other casting methods difficult to cast the complex, high temperature, easy to process castings, Can be used to melt casting precision casting.
At present, the world's investment casting process has developed rapidly and widely used. From the current situation, the future development trend of the process is that the casting products are getting closer to the parts and components. The traditional casting is only blank, Market quick response. The complexity of parts and components and the quality of the increasingly high grade, research and development means more and more strong, professional collaboration began to show, CAD, CAM, CAE application of parts and components to become the main technology.
From the current development situation analysis, investment casting technology is very wide range of applications, the future development prospects to be broad.