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:
Feb. 24, 2026
Filed:
Feb. 24, 2021
Kobe Steel, Ltd., Kobe, JP;
Keito Ishizaki, Kanagawa, JP;
Yoshihiko Kitagawa, Kanagawa, JP;
Tomoko Sugimura, Hyogo, JP;
Tatsuya Sasaki, Hyogo, JP;
Hidenori Nako, Hyogo, JP;
Kobe Steel, Ltd., Kobe, JP;
Abstract
A flux for electroslag welding used for electroslag welding may include a basic oxide, an amphoteric oxide, an acidic oxide, and a fluoride. With respect to a total mass of the flux, the basic oxide may include 5.1 mass % or more and 30.0 mass % or less of CaO, the acidic oxide includes 17 mass % or less of SiO, and the fluoride includes 35 mass % or more and 73 mass % or less of CaF2. A content of the CaO is 30 mass % or more with respect to a total mass of the basic oxide, a content of the SiOis 80 mass % or more with respect to a total mass of the acidic oxide, a content of the CaFis 80 mass % or more with respect to a total mass of the fluoride, and a value of (2×[CaF]+[CaO])/[SiO] is 5 or more and 56 or less.