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:
Aug. 18, 2015
Filed:
Feb. 08, 2008
Tomohiro Inoue, Kawasaki, JP;
Shigeto Sakashita, Kawasaki, JP;
Daijiro Yuasa, Kawasaki, JP;
Hiroyasu Yokoyama, Chita, JP;
Kazuhito Kenmochi, Chiba, JP;
Yukinori Iizuka, Kawasaki, JP;
Tomohiro Inoue, Kawasaki, JP;
Shigeto Sakashita, Kawasaki, JP;
Daijiro Yuasa, Kawasaki, JP;
Hiroyasu Yokoyama, Chita, JP;
Kazuhito Kenmochi, Chiba, JP;
Yukinori Iizuka, Kawasaki, JP;
JFE Steel Corporation, , JP;
Abstract
A method for manufacturing an electric resistance steel pipe having a good toughness at a welded portion is provided, the method being capable of stably manufacturing an electric resistance welded steel pipe having a desirable toughness at a welded portion although a steel strip serving as a base material has a dimensional variation. Groove shapes and are applied to edges and of an open pipe, an edge shape monitor continuously captures images of the edges and immediately before electric resistance welding, and the captured images are input to an arithmetic processing unit for image processing.