Method and apparatus for gmaw welding

Details Method and apparatus for gmaw welding Method and apparatus for gmaw welding

B - Operations, Transporting

23

K

B23K 9/173 (2006.01) B23K 9/29 (2006.01)

Patent

CA 2074968

L-8675 METHOD AND APPARATUS FOR GMAW WELDING Abstract A method and apparatus of welding along a pass line on a steel workpiece, which method and apparatus comprises si- multaneously feeding two welding wires in generally parallel relationship toward a workpiece with extended welding wires generally intersecting the workpiece at individual points spaced from each other a distance in the range about 3/16 inch to about 3/8 inch; then creating a separate arc between each of the wires and the workpiece; passing a single pro- tective envelope of shielding gas axially along two welding wires simultaneously and around said two separate arcs ex- tending between welding wires and the workpiece; and, caus- ing relative movement between the two gas shielded welding wires and the workpiece in a direction corresponding to the desired pass line on the workpiece.

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