Title:
疲労特性及び耐水素割れ特性が向上する打ち抜き穴加工用パンチおよび打ち抜き穴加工方法
Document Type and Number:
Japanese Patent JP5747448
Kind Code:
B2
Inventors:
Suzuki Kazuki
Kazuhisa Kusumi
Masaharu Oka
Takashi Matsuno
Kazuhisa Kusumi
Masaharu Oka
Takashi Matsuno
Application Number:
JP2010127989A
Publication Date:
July 15, 2015
Filing Date:
June 03, 2010
Export Citation:
Assignee:
Nippon Steel & Sumitomo Metal Corporation
International Classes:
B21D28/34
Domestic Patent References:
| JP11333530A | ||||
| JP38020C1 | ||||
| JP11216523A |
Attorney, Agent or Firm:
Koji Hagiwara
Tetsuo Kanamoto
Miaki Kametani
Tetsuo Kanamoto
Miaki Kametani
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