发明授权
- 专利标题: Press forming method for steel plate
- 专利标题(中): 钢板冲压成型方法
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申请号: US13995009申请日: 2012-01-12
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公开(公告)号: US09463501B2公开(公告)日: 2016-10-11
- 发明人: Takayuki Yamano , Jiro Iwaya , Takayuki Kimura , Tatsuya Asai , Naoki Mizuta
- 申请人: Takayuki Yamano , Jiro Iwaya , Takayuki Kimura , Tatsuya Asai , Naoki Mizuta
- 申请人地址: JP Kobe-shi
- 专利权人: Kobe Steel, Ltd.
- 当前专利权人: Kobe Steel, Ltd.
- 当前专利权人地址: JP Kobe-shi
- 代理机构: Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2011-006387 20110114; JP2011-006388 20110114
- 国际申请: PCT/JP2012/050453 WO 20120112
- 国际公布: WO2012/096336 WO 20120719
- 主分类号: B21D22/20
- IPC分类号: B21D22/20 ; B21D22/24
摘要:
A press forming method forming an extended part by extension in a later forming period after deep drawing, the deep drawing process carried out with working at 100-250° C., and the extension forming process carried out colder at less than 50° C., whereby the extended part is formed by extension in a cup shaped low parts formed by deep drawing. Thus, press forming products containing formed elements can be deep drawing formed and extension formed at a high forming rate of 10 mm/sec or greater, which can assure high productivity. By making a steel plate temperature 100-350° C. during press forming and by making the forming rate in the later forming period where extension forming is carried out slower than the forming rate in an earlier forming period where extension forming is not carried out, cracking of the extended part can be prevented and press forming limitations can be improved.
公开/授权文献
- US20130263637A1 PRESS FORMING METHOD FOR STEEL PLATE 公开/授权日:2013-10-10
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