The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 2016
Filed:
Feb. 25, 2010
Naoya Hayakawa, Chiba, JP;
Kenji Oi, Chiyoda-ku, JP;
Atsushi Ishigami, Chiba, JP;
Kenji Shimada, Chiba, JP;
Masahiro Odaka, Chiba, JP;
Naoya Hayakawa, Chiba, JP;
Kenji Oi, Chiyoda-ku, JP;
Atsushi Ishigami, Chiba, JP;
Kenji Shimada, Chiba, JP;
Masahiro Odaka, Chiba, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
Provided are a combination welding method and a combination arc welding machine thereof having excellent construction efficiency and preventing a deterioration of toughness of a HAZ by maintaining the current density of each of gas metal arc welding and submerged-arc welding within an appropriate range at the time of welding a steel plate by the combination of the gas metal arc welding using multielectrodes and the submerged-arc welding using multielectrodes. The gas metal arc welding is performed using two or more electrodes, a wire for welding having a wire diameter of 1.4 mm or more is used in the first electrode of the gas metal arc welding, and a current density of the first electrode is set to 320 A/mmor more.