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:
Oct. 13, 2015
Filed:
Dec. 22, 2010
Yoshitomi Okazaki, Kobe, JP;
Hidenori Nako, Kobe, JP;
Munenobu Sato, Fujisawa, JP;
Masafumi Yamakami, Fujisawa, JP;
Yoshitomi Okazaki, Kobe, JP;
Hidenori Nako, Kobe, JP;
Munenobu Sato, Fujisawa, JP;
Masafumi Yamakami, Fujisawa, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
The objective of the present invention is to provide a similar-metal-composition welding solid wire, and weld metals therefor, with which both excellent bead shape and high ultralow-temperature toughness for the weld joints can be achieved when welding 9% Ni steels together by means of a high-efficiency MIG welding method. A fixed ratio of a REM and O are included in a similar-metal-composition welding solid wire of a 9% NI steel base material, and oxygen is supplied in a trace amount in a range that does not hinder the ultralow-temperature toughness of the weld joint () but that is capable of forming fine REM oxides in the weld metal () and of controlling the weld metal to produce an excellent bead shape. In addition, both Al and Ti are regulated and an argon gas that contains little or no carbon dioxide gas is used as the shield gas in the MIG welding method. Thus, both an excellent bead shape and high ultralow-temperature toughness for the weld joint () can be achieved.