Title:
METHOD FOR MANUFACTURING DISSIMILAR MATERIAL JOINT STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2022/009721
Kind Code:
A1
Abstract:
Provided is a method for manufacturing a dissimilar material joint structure capable of suppressing the occurrence of cracks in an HAZ in dissimilar material joining of aluminum or an aluminum alloy material and a steel material. A method for manufacturing a dissimilar material joint structure by joining a steel material (13) and an aluminum alloy material (11) having a low-temperature sprayed coating film (12) made of a metal powder that can be joined to the steel material (13) on at least a part of the surface, the method comprising: a step for superimposing the aluminum alloy material (11) and the steel material (13) so that the low-temperature sprayed coating film (12) and the steel material (13) face each other, and a step for irradiating with a laser beam (14) from the steel material (13) side, wherein a region to be irradiated with the laser beam (14) is composed of a first region W1 in which at least the steel material (13) and the low-temperature sprayed coating film (12) are melted, and a second region W2 in which the steel material (13) and the low-temperature sprayed coating film (12) are not melted in a peripheral portion of the first region W1.
Inventors:
MAEDA KYOHEI
SUZUKI REIICHI
SUZUKI REIICHI
Application Number:
PCT/JP2021/024387
Publication Date:
January 13, 2022
Filing Date:
June 28, 2021
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
B23K26/323; B23K26/073; B23K26/21; B23K26/322; C23C24/04
Foreign References:
| JP2020011276A | 2020-01-23 | |||
| JP2012161808A | 2012-08-30 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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