| 摘要 |
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. The welding system comprises a power supply (16) configured to provide power to establish an arc between a metal cored welding electrode (44) and a workpiece (14) in a direct current, electrode negative welding polarity, the metal cored welding electrode comprising a sheath and a core, a wire feeder (22) coupled to the power supply (16) and configured to feed the electrode (44) from a welding torch (24) and a welding torch (24) that, in operation, receives the electrode(44) from the wire feeder (22) while cyclically moving the electrode (44) in a desired pattern by a motion control assembly within the welding torch (24) to maintain an arc between the sheath (44) and the workpiece (14). |
