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1. (WO2015125003) METHOD AND SYSTEM TO USE COMBINATION FILLER WIRE FEED AND HIGH INTENSITY ENERGY SOURCE FOR WELDING WITH CONTROLLED ARCING FREQUENCY

Pub. No.:    WO/2015/125003    International Application No.:    PCT/IB2015/000208
Publication Date: Fri Aug 28 01:59:59 CEST 2015 International Filing Date: Wed Feb 25 00:59:59 CET 2015
IPC: B23K 9/02
B23K 9/04
B23K 9/09
B23K 9/10
B23K 9/12
B23K 26/34
B23K 28/02
B23K 26/20
B23K 9/08
Applicants: LINCOLN GLOBAL, INC.
Inventors: PETERS, Steven, R.
MATTHEWS, William, Thomas
JOHNS, Kent
HENRY, Judah, Benjamin
Title: METHOD AND SYSTEM TO USE COMBINATION FILLER WIRE FEED AND HIGH INTENSITY ENERGY SOURCE FOR WELDING WITH CONTROLLED ARCING FREQUENCY
Abstract:
Systems and methods consistent with embodiments of the present invention are directed to depositing a consumable onto a workpiece using a hot-wire welding technique which employs a combination of hot wire and arc welding. The waveform creates arc events during the hot wire welding operation to add/control heat in the welding process. The hot-wire welding process can be used by itself, with a laser or in conjunction with other welding processes. The method comprising: generating and delivering a deposition current to a consumable; advancing said consumable towards a workpiece to deposit said consumable on said workpiece using said deposition current; wherein said generating current waveform comprises: generating an arc deposition portion which results in an arc between said consumable and said puddle; and generating a hot wire portion during which a heating current is provided to said consumable and no arc is created between said consumable and said puddle; and determining a desired heat input into said at least one workpiece from said current waveform and alternating said current waveform between said arc deposition portion and said hot wire portion to control said heat input into said workpiece from said current waveform to maintain said desired heat input, and wherein said arc deposition portion has a polarity which is different than a polarity of said hot wire portion.