Nissan Motor Company Limited

Li Gao

Daisuke Oiki

Shohei Iida

Manabu Atsumi

Youichi Mori

Mitsuo Ichikawa

An arc welding method melts and joins at least a part of a workpiece having a plurality of overlapping non-ferrous metal plates. The arc welding method includes forming a machined hole in a welded portion of the workpiece. The machined hole is a non-through-hole that penetrates a non-ferrous metal plate on an arc-radiation side, and reaches a non-ferrous metal plate on a side farthest from an arc welder to form a partial recess portion. The arc welding method further includes causing arc radiation from an opening side of the machined hole to melt and weld a back surface of the non-ferrous metal plate furthest from the workpiece without using a backing jig on an opposite side of the workpiece.

Arc welding method, and method for inspecting welding strength of joint welded using arc welding method

In the manufacture of a panel body composed of a first panel, which has a structure in which two panel materials of different sheet thicknesses are butted and joined, and a second panel, which is arranged on the outside of the first panel and connected thereto by hemming, the first panel is pressed so that the main surfaces of the two panel materials on the joined portion side form a single plane, and a sloped portion due to the difference in sheet thickness appears on the rear side thereof, the main surface of the first panel on the joined portion side is arranged on the second panel side, and hemming of the second panel is performed against the edge portion of the first panel that includes the sloped portion, thereby achieving good interior and exterior appearance quality of the panel body.

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Kanagawa, Japan

Li Gao