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US 2014/0209590 A1Published application
Modified flux system in cored electrode
AssigneeLincoln Global, Inc.
InventorsBadri K. Narayanan, Russell K. Myers, Patrick T. Soltis
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AssigneeLincoln Global, Inc.
InventorsBadri K. Narayanan, Russell K. Myers, Patrick T. Soltis
Estimating the term…
A welding system and cored welding electrode composition is disclosed for performing a short arc welding process between an advancing wire electrode and a workpiece. The system comprises a power source with a controller for creating a current pulse introducing energy into the electrode to melt the end of the electrode and a low current quiescent metal transfer section following the end of the melting pulse during which the melted electrode short circuits against the workpiece; a timer to measure the actual time between the end of the pulse and the short circuit; a device for setting a desired time from the pulse to the short circuit; a circuit to create a corrective signal based upon the difference between the actual time and the desired time; and, a circuit responsive to the corrective signal to control a given parameter of the current pulse.
A self-shielded flux cored arc welding (FCAW-S) electrode particularly adapted for forming welds having reduced levels of contaminants using an AC waveform, the electrode fill having an alloy/flux system comprising:
A flux cored electrode adapted to form a weld metal having a minimum Charpy V-Notch toughness of 60 J at −20° C. upon short arc welding, the electrode comprising a core having an alloy/flux system comprising:
A flux cored electrode adapted to produce weld metal having a tensile strength greater than 90 ksi upon short arc welding, the electrode comprising a core having an alloy/flux system comprising:
Dependencies are inferred from the claim text.