Investment casting Investment casting can be used to cast all kinds of complex castings, especially the casting of high temperature alloy. Such as jet engine blades, the streamlined profile and cooling with inner chamber, with the machining process can hardly formation. investment casting of the investment casting process can not only achieve the batch production, ensure the consistency of the casting, but also avoid the stress concentration of the residual knife. The surface finish of the investment casting is higher than that of the casting parts, which can reach up to Ra.1.6~3.2 M. The investment casting the biggest advantage is due to the investment casting with high dimensional accuracy and surface finish, so can reduce machining work, only in parts of the parts of the high demand for a little machining allowance can, even some casting only keep grinding and polishing allowance, not mechanical processing can use. Using the method of investment casting can save a lot of machine tools and processing time, greatly saving the metal raw materials.
