2023-03-29
2. Choose a bushing, pour ceramic slurry into the gap between the bushing and the shape to make a metal mold. The bushing can be sand molded or metal molded. Watering the ceramic shell with a bushing can save a lot of ceramic slurry, which is used more in manufacturing. The surface roughness of lost foam castings can reach Ra10~1.25μm, and the processing accuracy can reach 3~5 grades, which can achieve the effect of less grinding and no grinding. The production cycle of ceramic mold casting is short, and the utilization rate of metal materials is high. Large castings can reach more than ten tons, mainly used in precision casting of large and medium-sized thick-walled pipes and small batch production of stamping dies, forging dies, plastic molds, metal molds, die-casting molds, laminated glass molds, etc. mold. The service life of lost foam casting sand abrasives can be compared with abrasives made by mechanical processing, and the cost of raw materials is lower than that of abrasives made by mechanical processing.