塑性と加工
Online ISSN : 1882-0166
Print ISSN : 0038-1586
論文
高張力鋼板絞り容器の肉厚制御のための
局部増肉ブランクの成形
安部 洋平TAN Chin Joo森 謙一郎鈴木 通之
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ジャーナル フリー

2008 年 49 巻 573 号 p. 0985-0989

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A locally thick blank was employed for the stamping of thin high strength steel sheets to increase the wall thickness at the inner corner of stamped products. To form the locally thick blank, a 2-stage local thickening process was developed for increasing the thickness of a blank at the portion equivalent to the inner corner. In the 1st stage of the local thickening process, a ring including the portion equivalent to the inner corner is drawn, and the drawn ring is compressed with the flat tools in the 2nd stage to attain a local increase in wall thickness. The 2-stage local thickening process was designed from both finite element simulation and an experiment. A locally thick blank having an increased wall thickness of 8% was formed, and the wall thickness at the inner corner of the stamped wheel disk from the locally thick blank was successfully increased by 9.6%. It was found that the locally thick blanks are attractive for controlling the distributions of the wall thickness of stamped products from thin high strength steel sheets.

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© 2008 一般社団法人 日本塑性加工学会
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