Rapid Prototyping of Model Used for Gypsum Mould Investment Casting

The concrete forming process of SLS(selective laser sintering) model used for gypsum mould investment casting was described.The metal part can be obtained by gypsum mould investment casting.As a result of SLA rapid prototyping technology,which the CAD model can rapidly and easily be converted to physical one,the manufacturing cycle is greatly shortened,and the cost is cut down.