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US 2013/0153557 A1Published application
Dc electrode negative rotating arc welding method and system
AssigneeIllinois Tool Works Inc.
InventorsKevin Pagano, James Lee Uecker, Steven Barhorst, Bryan Dustin Marschke, Mario Amata
Life of this patent
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Abstract
A welding operation is performed by moving or rotating an arc in a welding torch, and feeding a metal cored wire through the torch in a direct current, electrode negative welding process. The electrode may include one or more arc stabilizers. The welding process may be pulsed or non-pulsed. Moreover, the process may be used with a number of different base metals intended to be welded, such as thin plate, galvanized metals, painted metals, coated metals, and so forth.
Claims20
A welding method comprising:
- establishing an arc between a metal cored welding electrode and a workpiece in a direct current, electrode negative welding polarity, the metal cored welding electrode comprising a sheath and a core;
- feeding the electrode from a welding torch while cyclically moving the electrode in a desired pattern by a motion control assembly within the welding torch to maintain an arc between at least the sheath and the workpiece;
- and
- advancing the welding torch or the workpiece to establish a weld bead.
1 more element
A welding system comprising:
- a power supply configured to provide power to establish an arc between a metal cored welding electrode and a workpiece in a direct current, electrode negative welding polarity, the metal cored welding electrode comprising a sheath and a core;
- a wire feeder coupled to the power supply and configured to feed the electrode from a welding torch;
- and
- a welding torch that in operation receives the electrode from the wire feeder while cyclically moving the electrode in a desired pattern by a motion control assembly within the welding torch to maintain an arc between the sheath and the workpiece.
1 more element
A welding method comprising:
- providing welding power to establish an arc between a welding electrode and a workpiece in a direct current, electrode negative welding polarity;
- feeding the electrode from a welding torch while cyclically moving the electrode in a desired pattern by a motion control assembly within the welding torch to maintain an arc between the electrode and the workpiece;
- and
- advancing the welding torch or the workpiece to establish a weld bead.
1 more element
Dependencies are inferred from the claim text.