Finished products from our castings

This casting is a large thick-walled part. According to the determined production program and the structural characteristics of the part, if ordinary casting technology is used, more sand cores will be used. Issues such as the placement, positioning, and exhaust of the sand cores will greatly increase the casting process. difficulty. In view of the single-piece and small-batch production plan, the real mold casting process (that is, the casting method that combines ordinary sand molds and lost foam molds) is used for production. This plan uses STMMA as the model material, and uses alkyd oil urethane resin sand from self-hardening urethane resin sand to fill a certain thickness of molding sand on the surface of the model, and use dry sand to fill the rest of the model, which can reduce the loss of self-hardening resin sand. dosage and reduce costs. According to the reference [3], it is determined that the coating of the steel casting is made of lost foam casting steel coating prepared from aggregates of 70% bauxite and 30% jelly powder. It is brushed and the thickness of the coating is about 4mm.