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Patent Searching and Data


Title:
BUTT WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2017/099004
Kind Code:
A1
Abstract:
As a butt welding method for at least welding abutting parts of metal plate material by laser, the present invention provides a butt welding method comprising at least a step for filling a gap formed in abutting parts with welding material that has been formed in advance in a granular shape after attaching backing material to the back side of the gap, and a step for welding the abutting parts by irradiating with laser from above the gap filled with the welding material and forming a molten pool of the welding material in the gap. Thus, when butt welding thick metal plate material, it is possible to prevent occurrences of explosive activity of backing material and efficiently form a sound weld zone while assuring fast welding speed with a high energy laser.

Inventors:
MIZUTANI MASAMI (JP)
KATAYAMA SEIJI (JP)
WAHBA MOHAMED ASHOUR SAAD (JP)
Application Number:
PCT/JP2016/085841
Publication Date:
June 15, 2017
Filing Date:
December 02, 2016
Export Citation:
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Assignee:
UNIV OSAKA (JP)
International Classes:
B23K26/211; B23K9/16; B23K26/21; B23K26/348
Foreign References:
JP2003136264A2003-05-14
JP2009034713A2009-02-19
JPH02251390A1990-10-09
JP2011218362A2011-11-04
JP2006224130A2006-08-31
Attorney, Agent or Firm:
JODAI, Tetsuji et al. (JP)
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