公开(公告)号：EP1992444B1

公开(公告)日：2011-12-28

申请号：EP07737495.7

申请日：2007-02-28

申请人： Kabushiki Kaisha Toshiba

发明人： SHIIHARA, Katsunori ,  KONO, Wataru ,  TANAKA, Yoshimi ,  TAMURA, Masataka ,  SATO, Katsuhiko ,  ITO, Tomoyuki ,  SOMA, Koichi ,  TANABE, Tomoharu

IPC分类号： B23K26/12 ,  B23K9/00 ,  B23K26/20

CPC分类号： B23K26/24 ,  B23K26/1224

摘要： When a laser beam is used to carryout weld-repairing in water, such troubles, as defective welding caused by weld metal being blown off when residual water is ejected, is limited/prevented. A curing plate (3) is welded to a metal structure (2) in water so that the curing plate (3) covers the surface of the structure (2) including a portion to be repaired. The welding is carried out such that the periphery of the curing plate (3) is welded in water by laser welding while inactive gas (10) is supplied to a portion to be welded to seal the portion to be repaired by the curing plate (3). Welding is carried out while the inactive gas (10) is supplied to the portion to be welded coaxially with a laser beam (7) during the laser welding. The curing plate (3) is provided therein with an opening in advance so as to release vapor produced from water remaining during welding between the curing plate (3) and the structure (2), and the opening is sealed after the periphery of the curing plate (3) is welded to the structure (2).

公开(公告)号：EP1992444A1

公开(公告)日：2008-11-19

申请号：EP07737495.7

申请日：2007-02-28

申请人： Kabushiki Kaisha Toshiba

发明人： SHIIHARA, Katsunori ,  KONO, Wataru ,  TANAKA, Yoshimi ,  TAMURA, Masataka ,  SATO, Katsuhiko ,  ITO, Tomoyuki ,  SOMA, Koichi ,  TANABE, Tomoharu

IPC分类号： B23K26/12 ,  B23K9/00 ,  B23K26/20

CPC分类号： B23K26/24 ,  B23K26/1224

摘要： When a laser beam is used to carryout weld-repairing in water, such troubles, as defective welding caused by weld metal being blown off when residual water is ejected, is limited or prevented. A protection plate (3) is welded to a metal structure (2) in water so that the protection plate (3) covers the surface of the structure (2) including a portion to be repaired. The welding is carried out such that the periphery of the protection plate (3) is welded in water by laser welding while inactive gas (10) is supplied to portion to be welded to seal the portion to be repaired by the protection plate (3). Welding is carried out while the inactive gas (10) is supplied to the portion to be welded coaxially with a laser beam (7) during the laser welding. The plate (3) is provided therein with an opening in advance so as to release vapor produced from water remaining during welding between the protection plate (3) and the structure (2) and the opening is sealed after the periphery of the protection plate (3) is welded to the structure (2).

摘要翻译： 当激光束用于在水中进行焊接修复时，由于焊接金属在喷出残余水时被吹出而导致的焊接不良，所以受到限制或者被阻止。 保护板（3）在水中焊接到金属结构（2），使得保护板（3）覆盖包括待修理部分的结构（2）的表面。 进行焊接，使得通过激光焊接将保护板（3）的周边焊接在水中，而将惰性气体（10）供给到待焊接部分以通过保护板（3）密封待修复的部分， 。 在激光焊接期间，将不活泼气体（10）与激光束（7）同轴地供给到被焊接部分进行焊接。 板（3）预先设置有开口，以便在保护板（3）和结构（2）之间的焊接过程中释放由剩余的水产生的蒸气，并且在保护板的周边 3）焊接到结构（2）。