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:
Mar. 29, 2005
Filed:
Mar. 01, 2001
Yasuhiro Koga, Kitakyushu, JP;
Shinji Okumura, Kitakyushu, JP;
Haruki Nakashima, Kitakyushu, JP;
Hiroyuki Handa, Kitakyushu, JP;
Takahide Hirayama, Kitakyushu, JP;
Yasuhiro Koga, Kitakyushu, JP;
Shinji Okumura, Kitakyushu, JP;
Haruki Nakashima, Kitakyushu, JP;
Hiroyuki Handa, Kitakyushu, JP;
Takahide Hirayama, Kitakyushu, JP;
Kabushiki Kaisha Yaskawa Denki, Kitakyushu, JP;
Abstract
An arc welding method which suppresses sputtering and which makes it possible to obtain a smooth bead penetration surface shape as in MIG or MAG welding, without producing undercuts or bumping beads. A carbon dioxide gas welding method effecting welding at welding rates of about not less than 1.5 m/minute using a consumable electrode and a welding power source having a control means for opening a short circuit at a rate of at least about 500 A/msec on detection of such short circuit, wherein welding is effected with a proper volume of globules under the welding conditions obtained by computing a welding voltage corresponding to the proper volume of globules by a first formula representing the relationship between the welding wire feed rate, the welding voltage and the volume of globules traveling to a pond of weld as the welding wire is melting and a second formula representing the relationship between the wire feed rate, the welding voltage, and the period of globules traveling to a pond of weld as the welding wire is melting.