发明授权
- 专利标题： Method of manufacturing electric resistance welding pipes having excellent characterization of welded seams
- 专利标题（中）： 制造具有优异焊接特征的电阻焊管的方法
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申请号： US11992916申请日： 2006-11-09
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公开(公告)号： US08912462B2公开(公告)日： 2014-12-16
- 发明人: Kazuhito Kenmochi , Takatoshi Okabe , Hiroyasu Yokoyama , Yuji Sugimoto , Yoshifumi Fujioka , Kei Sakata , Tomohiro Inoue , Hiroyuki Shirosawa , Motoaki Egi , Yasuo Nishida , Muneyoshi Murakami
- 申请人： Kazuhito Kenmochi , Takatoshi Okabe , Hiroyasu Yokoyama , Yuji Sugimoto , Yoshifumi Fujioka , Kei Sakata , Tomohiro Inoue , Hiroyuki Shirosawa , Motoaki Egi , Yasuo Nishida , Muneyoshi Murakami
- 申请人地址： JP
- 专利权人： JFE Steel Corporation
- 当前专利权人： JFE Steel Corporation
- 当前专利权人地址： JP
- 代理机构： DLA Piper LLP (US)
- 优先权： JP2005-326802 20051111; JP2005-362720 20051216; JP2006-124551 20060428; JP2006-124553 20060428; JP2006-149889 20060530; JP2006-163202 20060613
- 国际申请： PCT/JP2006/322793 WO 20061109
- 国际公布： WO2007/055405 WO 20070518
- 主分类号： B23K31/12
- IPC分类号： B23K31/12 ; B21C37/08 ; B21C37/083
摘要：
A method of efficiently manufacturing electric resistance welding pipes having excellent characterization of welded seams is provided, by which each lateral edge of a rounded strip immediately before electric resistance welding is securely shaped with desired tapering flexibly in response to change in strip thickness, so that welding quality may be kept to be excellent. A method of manufacturing electric resistance welding pipes, in which a strip is subjected to forming, then edges thereof are formed to substantially face each other, and then the edges are subjected to electric resistance welding to form a pipe, wherein an edge and an edge opposed thereto at one of an upper-surface side and a lower-surface side of the strip are shaped with tapering before the forming by means of cutting or shaving, or finpass forming.
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