ARC WELDING JOINT, AUTOMOBILE PART, AND MANUFACTURING METHOD FOR ARC WELDING JOINT

Japanese Patent JP2023166120

A

To provide an arc welding joint in which fatigue strength of a starting end portion of an arc welding part is high, as well as automobile parts and a manufacturing method for an arc welding joint.SOLUTION: An arc welding joint according to one embodiment of the present invention is provided with a first steel plate, a second steel plate overlapped with the first steel plate, whose plate thickness is t2, and a weld metal extending linearly along an end part of the first steel plate to join the end part of the first steel plate to a surface of the second steel plate. On a cross section passing on a cross section sampling point which is an intersection of a line along a weld toe at the second steel plate side of the weld metal and an outer edge of a starting end portion of the weld metal, which is perpendicular to a weld line of the weld metal, an angle of the weld toe at the second steel plate side of the weld metal is more than 0 and less than 45 degrees. On the cross section, a weld penetration width which is an interval between two intersections of a surface near the overlap side of the second steel plate and a fusion boundary of the weld metal is 2.5×t2 or more.SELECTED DRAWING: Figure 1

JP4332862	Stud welding system and its welding management method
JP3449824	LASER MACHINING HEAD

MATSUDA KAZUTAKA
ISHIDA KINYA
KODAMA SHINJI

JP2022076921A

November 21, 2023

May 09, 2022

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NIPPON STEEL CORP

B23K31/00; B23K9/00; B23K9/02; B23K9/12

Yasushi Matsunuma
Onami Kazunori
Tomoo Katsumata
Hiroshi Yamaguchi
Koichiro Hotta
Kengo Yamaguchi
Yasuhiro Iida
Shota Iguchi

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