Title:
BUTT WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/054310
Kind Code:
A1
Abstract:
This butt welding method for butting and joining large aluminum alloy-made panels W, W together, comprises: an overhead welding step for performing overhead welding on a V groove Wv formed on the lower surface side of the butted portion between the large panels W, W by means of an overhead welding truck 1; and a flat welding step for performing a flat welding on a U groove Wu formed on the upper surface side of the butted portion between the large panels W, W by means of a flat welding truck 21. In the flat welding step, three welding torches 26 mounted on the flat welding truck 21 are simultaneously moved, and the preceding welding torches 26 are caused to perform welding to make buildups B1, B2 in the U groove Wu, and the last welding torch 26 is caused to perform welding to make a buildup B3 for adjusting the appearance of the U groove Wu. When butt welding of aluminum alloy-made to-be-welded materials is performed, the butt welding work time can be shortened and welding deformation can be reduced while work for reversing the to-be-welded materials is omitted.
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Inventors:
NONOMURA SHOICHI (JP)
YAMANAKA SATOSHI (JP)
HAYAKAWA HIDETAKA (JP)
YAMANAKA SATOSHI (JP)
HAYAKAWA HIDETAKA (JP)
Application Number:
PCT/JP2019/032090
Publication Date:
March 19, 2020
Filing Date:
August 16, 2019
Export Citation:
Assignee:
IHI CORP (JP)
International Classes:
B23K9/173; B23K9/23; B23K37/02
Foreign References:
| JPS58224082A | 1983-12-26 | |||
| JPS4921346A | 1974-02-25 |
Attorney, Agent or Firm:
NAGATO Kanji (JP)
Download PDF:
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