Lost foam casting has high precision in castings

Lost foam casting is a new process of near-margin-free, precise molding, which does not require molding, no parting surface, no sand core, so that the casting has no flash, burr and draft slope, and reduces dimensional errors due to core combination. The surface roughness of castings can reach Ra3.2 to 12.5μm; the dimensional accuracy of castings can reach CT7 to 9; the machining allowance is up to 1.5 to 2mm, which can greatly reduce the cost of machining and reduce the machining time by 40% to 50% compared with traditional sand casting methods.