Indirect Solid Freeform Fabrication Process of Integral Ceramic Mould for Complex Precision Castings
A new indirect solid freeform fabrication process of integral ceramic mold for complex precision casting was developed by combining Sereolithography(SL)and gelcasting technique. In this paper, issues of preparation for aqueous ceramic slurry, design principles for technological system prototypes, pyrolysis of resin prototypes and sintering of ceramic green bodies were discussed. A hollow turbine blade was taken as a case study to verify the feasibility and effectiveness of the proposed approach.