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. 05, 2013
Filed:
Feb. 12, 2007
Josef Artelsmair, Wartberg/Krems, AT;
Josef Leeb, Pettenbach, AT;
Josef Artelsmair, Wartberg/Krems, AT;
Josef Leeb, Pettenbach, AT;
Fronius International GmbH, Pettenbach, AT;
Abstract
The invention describes a method for welding a workpiece () with a consuming welding wire (), the latter being moved substantially towards the workpiece () by a wire feeder () during a welding process, wherein a process is started and performed for removing slag () from the end of the welding wire (). In order to create a welding method which is not affected by slag () possibly adhering to the end of the welding wire () to be contacted and which ensures a safe ignition of the electric arc (), it is provided that the welding current (I) will be reduced to a minimum value as soon as the slag-removing process is started, and during the slag-removing process, that the welding wire () will be cyclically moved towards the workpiece () by a predetermined path length in a fast recurrent forward/backward movement and will again be moved away from the workpiece () by a smaller path length until short-circuit detection between the welding () and the workpiece (), by a short-circuit monitoring unit upon which the slag-removing process will be finished.