エレクトロスラグ溶接方法及びエレクトロスラグ溶接における磁場印加装置

Japanese Patent JP7377733

B2

To provide an electroslag welding method characterized by performing electroslag welding of a base material while applying a magnetic field to a molten pool in a groove portion of the base material.SOLUTION: In the electroslag welding method, a base material is welded while reciprocating a welding torch 90 between a front side position and a rear side position in a groove portion; when the welding torch 90 approaches an iron core of a magnetic filed application coil 30 at a front side that applies the magnetic field through the front side of the groove portion during the reciprocation of the welding torch 90, electric current values of the magnetic field application coil 30 at the front side are reduced and electric current values of the magnetic application coil 40 at the rear side that applies a magnetic field through the rear side of the groove portion are increased; and when the welding torch 90 approaches an iron core of a magnetic field application coil 40 at the rear side during the reciprocation of the welding torch 90, electric current values of the magnetic field application coil 40 at the rear side are reduced, and electric current values of the magnetic field application coil 30 at the front side are increased.SELECTED DRAWING: Figure 20

Osamu Ozaki
Hiroshi Hashimoto
Maiho Tatsumi
Ryo Toda
Hidenori Meiko

JP2020024572A

November 10, 2023

February 17, 2020

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KABUSHIKI KAISHA KOBE SEIKO SHO

B23K25/00; B23K37/06

JP51025445A
JP54120253A
JP58218377A

Jiro Furube
Fumio Ogata
Takehiko Sunada

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