Patent ID: 9511440
Filing Date: 2016-12-06
CPC Classification: B23K

Claim Text:
1. A welding device for depositing material on the surface of a cylindrical workpiece, comprising: an electrode head adapted to concurrently house an array of multiple electrodes in a spaced apart configuration, for depositing material on the surface of the workpiece, wherein the array of multiple electrodes includes at least one electrode near a center of the electrode head and plural electrodes located outward of the at least one electrode near the center of the electrode head, wherein the electrode head is actuatable through a welding trajectory around the cylindrical workpiece, and the multiple electrodes are arrayed substantially linearly and perpendicular to said welding trajectory; a welding power source adapted to provide power for establishing a welding arc between each of the multiple electrodes and the cylindrical workpiece; at least one drive roll that is configured to drive at least one of the multiple electrodes through the electrode head, wherein the electrodes located outward of the at least one electrode near the center of the electrode head are driven at a first wire feed speed and the at least one electrode near the center of the electrode head is driven at a second wire feed speed; and the first wire speed is greater than the second wire feed speed, wherein the welding power source is further adapted to provide power for establishing the welding arc in a predetermined order for one or more of the multiple electrodes arrayed substantially linearly and perpendicular to said welding trajectory around the cylindrical workpiece, and the predetermined order is based on a location of the electrode head along the cylindrical workpiece.