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Improvement of bulge forming height with the combination of bulging, reverse re-bulging and ironing
張出・逆張出・しごき複合加工による張出高さの向上
2006
Keikinzoku/Journal of Japan Institute of Light Metals
張出・逆張出・しごき複合加工による張出高さの向上
Preserved Fulltext
In the bulging, the material existing at the flange portion is not drawn into the die opening, and so the contour of a metal sheet does not change. This feature of the bulging is advantageous to producing cups with wide flange. On the other hand, there is a weak point that it is difficult to make cups with large height by the bulging. In this study, in order to improve the bulge height, the method for flowing the material of the flange region to the die hole was examined. A new processing
doi:10.2464/jilm.56.483
fatcat:irkf6n2yczexfddeiyme4yi4rm