基本信息:
- 专利标题： Method of manufacturing a welded steel pipe
- 申请号：JP2011272502 申请日：2011-12-13
- 公开(公告)号：JP5263378B2 公开(公告)日：2013-08-14
- 发明人： 英司 津留
- 申请人： 新日鐵住金株式会社
- 专利权人： 新日鐵住金株式会社
- 当前专利权人： 新日鐵住金株式会社
- 优先权： JP2011272502 2011-12-13
- 主分类号： B23K31/00
- IPC分类号： B23K31/00 ; B23K9/18 ; B23K9/23 ; B23K37/08
摘要：
PROBLEM TO BE SOLVED: To provide a method for preventing a lateral crack resulting from hydrogen which is generated at a seam welded part of a high-strength welded pipe whose tensile strength for performing seam welding from inside/outside faces is not smaller than 850 MPa. SOLUTION: In the method of manufacturing the welded steel pipe which forms a steel plate whose tensile strength is not smaller than 850 MPa into a cylindrical shape, and submerge-arc welds an abutment part from the inside/outside faces, a region corresponding to 2 to 10% of a height of a welded metal in the thickness direction is cut by cutting from the external surface of the steel pipe over the whole length of the welding direction. COPYRIGHT: (C)2012,JPO&INPIT
公开/授权文献:
- JP2012051033A Method of manufacturing welded steel pipe 公开/授权日：2012-03-15