Analysis of Defect Causes and Improvement Measures for Guiding Support Plate Investment Casting
The diversion support plate is a complex investment casting with hollow,flat,thin wall and large plane with uneven wall thickness,and often has casting defects such as bulge,porosity,shrinkage hole and slag inclusion.The strength of the mold shell is increased by adding process reinforcement on the large plane of the wax mold,binding nickel iron wire in the shell,and filling sand in the cavity of the mold shell.Moreover,ProCAST software was used to simulate and optimize the casting system,and measures such as alloy ingot and vacuum smelting casting were implemented to solve the defects such as bulging,porosity,shrinkage hole and slag inclusion in the casting,and the quality of the improved casting met the technical requirements.