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. 26, 2013
Filed:
Oct. 22, 2008
Kazuhiko Fukutani, Tokyo, JP;
Kenji Umetsu, Tokyo, JP;
Yoshiaki Nakamura, Tokyo, JP;
Kazuto Yamamoto, Tokyo, JP;
Takashi Miyakawa, Tokyo, JP;
Ryuichi Shimada, Tokyo, JP;
Tadayuki Kitahara, Tokyo, JP;
Takanori Isobe, Tokyo, JP;
Kazuhiko Fukutani, Tokyo, JP;
Kenji Umetsu, Tokyo, JP;
Yoshiaki Nakamura, Tokyo, JP;
Kazuto Yamamoto, Tokyo, JP;
Takashi Miyakawa, Tokyo, JP;
Ryuichi Shimada, Tokyo, JP;
Tadayuki Kitahara, Tokyo, JP;
Takanori Isobe, Tokyo, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
This invention provides a steel pipe material weld zone heating method and apparatus for melting and welding the weld zone of a steel pipe material that during continuous induction heating and welding of moving steel pipe material as the material being heated controls temperature distribution and molten steel shape and weld frequency fluctuation with high accuracy and high efficiency, irrespective of the shape of the heated region of material being heated or the material properties of the material being heated, which comprises a first imaging device, a weld zone temperature distribution computation device, a heating control device, and a variable frequency alternating current power supply device.