The optimization design of pre-forming for forging automobile parts using Taguchi method based grey relational analysis

This study used finite element analysis software DEFORM-3D to analyze the preform formability and die stress in pre-forming process of forging automobile transmission components. The materials are AISI- 5120 alloy steel JIS-SKD61 mould steel, respectively. research investigated phenomenon folding defects at end final process. First, as shape under pre-formed channel was designed change, its close forged hole shape. Then, three quality characteristics were optimally analyzed by Taguchi method for passes, namely, “maximum tensile upper die, ”“maximum stretch lower ” “ degree filling cavity.” this applied grey correlation identify experimental parameter configuration that could achieve a balance between characteristics, compared with results obtained method. show after design change pass can indeed improve preform. In terms overall data, data based on optimization characteristics. result set parameters not only maximum value 716.614 MPa but also considered die. two values 102.56% 836.843 MPa. Although these optimal, method, filled completely case. is lowest.