ARC WELDING METHOD FOR DISSIMILAR MATERIAL BONDING

Title:

ARC WELDING METHOD FOR DISSIMILAR MATERIAL BONDING

Document Type and Number:

WIPO Patent Application WO/2019/167502

Kind Code:

A1

Abstract:

An arc welding method for bonding dissimilar materials is provided which enables bonding, strongly and with highly reliable quality, an aluminum alloy or magnesium alloy and a dissimilar steel material using economical arc welding equipment, and which can be applied without restriction to open cross-section structures and closed cross-section structures. This dissimilar material bonding joint (1) is provided with an aluminum alloy or magnesium alloy upper plate (10), a steel lower plate (20) arc welded onto the upper plate (10), and a steel bonding auxiliary member (30). The bonding auxiliary member (30) has a stepped outer shape having a large-diameter part (32) and a small-diameter part (31), and a hollow section (33) is formed that passes through the large-diameter part (32) and the small-diameter part (31). The bonding auxiliary member (30) is pressed fitted into a hole (11) that is formed by punching the upper plate (10), and the hollow section (33) is filled with an iron alloy or Ni alloy welding metal (40).

Inventors:

SUZUKI REIICHI

Application Number:

PCT/JP2019/002577

Publication Date:

September 06, 2019

Filing Date:

January 25, 2019

Export Citation:

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Assignee:

KOBE STEEL LTD (JP)

International Classes:

B23K9/23; B21D28/26; B23K9/00; B23K9/02; B23K9/167; B23K10/02

Domestic Patent References:

WO2017170213A1	2017-10-05
WO2018030272A1	2018-02-15
WO2018042679A1	2018-03-08

Foreign References:

US3095951A	1963-07-02
JPS54100946A	1979-08-09
JPS52114446A	1977-09-26
JP2002174219A	2002-06-21
JP2009285678A	2009-12-10
JP5044128B2	2012-10-10
JP2018035397A	2018-03-08

Other References: