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Study on Thickness Addition Forming Process of External Wall of Part by Press Working
Published May 20, 2009 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Spring Conference
In this study, we developed the thickness addition method in press working process that was compressive forming by restricting both sides of sheet material by inclined dies. A circular type of blank specimen was employed on the forming test in order to restrain the material's moving in a transverse direction. The uniform thickness and the thickness addition could be obtained on the optimal forming condition. The compressive force to perpendicular direction of the blank was one of the most important forming parameters. Too much compressive force leads the formed test piece to the shear type of fracture. The lower force results in folding and buckling of the material. On the optimal forming condition, the ratio of the formed work piece thickness to the blank's thickness was 1.6. The thickness addition and the work hardening of the formed material can eliminate the welding process and the heat treatment.