lost foam process

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