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1. (WO2018042680) ARC-SPOT WELDING METHOD FOR JOINING DIFFERENT MATERIALS, JOINING AUXILIARY MEMBER, AND DIFFERENT MATERIALS WELDING JOINT

Pub. No.:    WO/2018/042680    International Application No.:    PCT/JP2016/079766
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Fri Oct 07 01:59:59 CEST 2016
IPC: B23K 9/23
B23K 9/007
B23K 9/167
B23K 9/173
B23K 10/02
Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
株式会社神戸製鋼所
Inventors: SUZUKI Reiichi
鈴木 励一
Title: ARC-SPOT WELDING METHOD FOR JOINING DIFFERENT MATERIALS, JOINING AUXILIARY MEMBER, AND DIFFERENT MATERIALS WELDING JOINT
Abstract:
A different materials welding joint (1) is provided with: an upper plate (10) that is made of an aluminum alloy or a magnesium alloy; and a lower plate (20) that is made of steel and is arc-spot welded to the upper plate (10), wherein the upper plate (10) has a hole (11) that faces a surface superposed on the lower plate (20). The different materials welding joint (1) is further provided with a joining auxiliary member (30) which is made of steel and in which a circular hole part (33) is formed. The joining auxiliary member (30) is arranged on the upper plate (10) so as to set the hole part (33) coaxial to the hole (11) provided to the upper plate (10), the hole part (33) of the joining auxiliary member (30) is filled with a welding metal (40) made of an iron alloy or Ni alloy, and a melting part (W) is formed by the welding metal (40), and portions of the melted lower plate (20) and the joining auxiliary member (30) which have been melted.