Nisshin Steel Co., Ltd.

Sanyo Electric Co., Ltd.

Sanyo Excell Co., Ltd.

Kenji Ogawa

Toru Kobayashi

Takefumi Nakako

Kazuaki Hosomi

Keiji Yamamoto

Keiichi Sawaya

Toshio Nagatomo

Kenji Koshiishi

Kazuhiro Shikada

Masaaki Kurimura

Kazuyuki Hiraoka

Taketo Uesugi

Kunio Hoshi

Masanobu Koda

A laser welding method for welding materials having different thicknesses includes abutting two plates having different thicknesses such that one surface of the thin plate and one surface the thick plate are made flush with each other; and thereafter welding the plates by applying a laser beam to abutting surfaces thereof, wherein the laser beam is directed obliquely relative to an abutting end face of the thick plate, a target position of the laser beam is determined on the abutting end face of the thick plate, and a target position depth D on the abutting end face of the thick plate is determined based on the formula t/3&#x2264;D&#x2264;t where t is a thickness of the abutting end face of the thin plate.

Method for laser welding of materials having different thicknesses

Coated metal sheet for dry cell positive electrode can and positive

Growing community of inventors

Ichikawa, Japan

Kenji Ogawa