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. 30, 2019
Filed:
May. 27, 2014
Kobe Steel, Ltd., Kobe-shi, JP;
Satoru Kano, Fujisawa, JP;
Makoto Ota, Fujisawa, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
Provided is a flux for submerged arc welding that has good welding workability and can reduce the diffusion hydrogen content in a weld metal using either an AC or a DC welding power source. The flux includes AlO: 15 to 35% by mass; SiO: 10 to 30% by mass; MgO: 10 to 25% by mass; F expressed in terms of CaF: 10 to 25% by mass; Mn expressed in terms of MnO: 3 to 20% by mass; Na expressed in terms of NaO and/or K expressed in terms of KO: 0.5 to 4.5% by mass in total; Fe expressed in terms of FeO: 0.5 to 8% by mass; and CaO: 6% by mass or less. A water-soluble SiOin the flux is less than 1% by mass. In addition, the flux has a composition that satisfies the following formula: 0.2≤[Mg/O]/([AlO]+[MnO])≤0.8.