The torque converter's impeller rapid casting based on stereolithography

The high costs and long lead-time associated with the fabrication of casting mold render conventional investment casting uneconomical for new product development,single part or small quantity production.In this paper,the torque converter impeller's function sample,which is used for the torque converter test,can be obtained by the craft combined stereolithography with fired mold casting.The basic craft process is that: first,impeller SLA prototype can be manufactured by the rapid prototyping equipment,then comes the process of moistening slurry,drench sand and roasting type to make the shell,in the end,impeller's function sample can be obtained after smelting casting.By this method,mould's cost can be saved and the new product's construction cycle can be cut.