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. 26, 2014
Filed:
Feb. 02, 2007
Fusaki Koshiishi, Fujisawa, JP;
Keiichi Suzuki, Fujisawa, JP;
Kei Yamazaki, Fujisawa, JP;
Masahiro Honma, Fujisawa, JP;
Fusaki Koshiishi, Fujisawa, JP;
Keiichi Suzuki, Fujisawa, JP;
Kei Yamazaki, Fujisawa, JP;
Masahiro Honma, Fujisawa, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
A pulsed arc welding method using carbon dioxide gas alone or a mixed gas made mainly of carbon dioxide gas as a shield gas, provides a pulse current of alternately repeating first and second pulses as a weld current. The first pulse and the second pulse have a pulse waveform of a different pulse peak current level and a different pulse width, respectively, and the following conditions are satisfied: peak current of the first pulse (I1)=300 to 700 A; peak period (T1)=0.3 to 5.0 ms; base current I1=30 to 200 A, base period (T1)=0.3 to 10 ms; peak current of the second pulse (I2)=200 to 600 A; peak period (T2)=1.0 to 15 ms; base current (I2)=30 to 200 A; and base period (T2)=3.0 to 20 ms.