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. 06, 2013
Filed:
Nov. 24, 2009
Yukinori Hirota, Hyogo, JP;
Hiroki Yuzawa, Osaka, JP;
Masaru Kowa, Osaka, JP;
Hideki Ihara, Osaka, JP;
Yukinori Hirota, Hyogo, JP;
Hiroki Yuzawa, Osaka, JP;
Masaru Kowa, Osaka, JP;
Hideki Ihara, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An AC pulse arc welding method of the present invention sets an appropriate AC frequency based on a wire feed rate and a polarity ratio when the polarity ratio is changed without changing the wire feed rate to control a heat input to a base material, and sets an appropriate straight polarity current value necessary for one drop per pulse from the polarity ratio and the AC frequency in AC pulse welding. The method makes it possible to achieve appropriate AC pulse welding by setting the polarity ratio, and to easily set the welding conditions.