US 12,257,647 B2
Joining method
Ryo Yoshida, Shizuoka (JP); and Hiroshi Kaneki, Shizuoka (JP)
Assigned to NIPPON LIGHT METAL COMPANY, LTD., Tokyo (JP)
Appl. No. 17/788,660
Filed by NIPPON LIGHT METAL COMPANY, LTD., Tokyo (JP)
PCT Filed Dec. 2, 2020, PCT No. PCT/JP2020/044890
§ 371(c)(1), (2) Date Jun. 23, 2022,
PCT Pub. No. WO2021/131561, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 2019-234529 (JP), filed on Dec. 25, 2019.
Prior Publication US 2023/0044246 A1, Feb. 9, 2023
Int. Cl. B23K 26/00 (2014.01); B23K 26/24 (2014.01); B23K 26/323 (2014.01)
CPC B23K 26/323 (2015.10) 4 Claims
OG exemplary drawing
 
1. A joining method comprising:
an overlapping step of overlapping a front surface of a first metal member with a back surface of a second metal member; and
a welding step of welding the first metal member with the second metal member by hybrid welding, with use of a hybrid welding machine including a leading laser welding unit and a trailing arc welding unit, wherein
in the welding step, laser welding, by irradiating with a laser beam, and arc welding are performed, along a preset travel route which is set on an inner corner portion formed by the front surface of the first metal member and an end surface of the second metal member, to the inner corner portion and the laser beam is oscillated to cross the preset travel route, and
the preset travel route is set in a range of equal to or more than −0.5 mm and less than 0 mm at a position offset away from the second metal member with respect to a corner in a direction orthogonal to the end surface with respect to the corner wherein the front surface of the first metal member intersects with the end surface of the second metal member, while being oriented parallel to the end surface of the second metal member.