마그네슘 합금 EL-cover 부품 제조를 위한 딥 드로잉 공정 유한요소해석 및 실험

Recently, the application of magnesium alloy to automobile and electric parts have been increased because of its high specific strength, excellent machinability, high electrical and thermal conductivity. The efforts of automobile industry to reduce fuel consumption by using lightweight structural materials have accelerated the deep drawing technology of magnesium alloy sheet. In the present study, the basic study to fabricate a EL-cover part for automotive compressor have been carried out. The EL-cover which is manufactured by die casting process has been redesigned for the application of deep drawing process. Three cases of die shapes were designed and the forming failure for each case was predicted by the FEM combined with a ductile fracture criterion. The result was verified with experiment and shows a good agreement.