This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Thickness Addition Forming for Flange Part of Steel and Nonferrous Metals
Published May 23, 2012 by Society of Automotive Engineers of Japan in Japan
In this study, we developed the thickness addition method in press working process that was compressive forming by clamping 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 thickness addition could be obtained on steel material (JSH270D) and non-ferrous materials (aluminum and copper) blank sheets. The compressive force to perpendicular direction of the blank and die cushion pressure were the important forming parameters on optimal forming. On the optimal condition, the ratio of the formed work pierce thickness to the blank's thickness was 185-195% irrespective of metal types. The hardness of specimen increased with steps of forming. The rise percentage of hardness was over 70% on mild steel and aluminum. On forming copper, the rise ratio was 50% less than the other materials' hardness.