METHOD AND APPARATUS FOR CONVERTING A MIG WELDER INTO A CARBON-ARC CUTTER
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United States of America Patent
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Issued Date -
Nov 11, 2010
app pub date -
May 7, 2010
filing date -
May 7, 2009
priority date (Note) -
Abandoned
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Abstract
Apparatus and methods convert a MIG welder into an effective cutting machine. A hand-held unit and a feeder supply a wire through the hand-held unit, the wire including a carbon-containing core. A source of electrical energy is connected to the wire being fed and the metal to be cut such that an arc is created with sufficient energy to melt the metal in a localized region, and further apparatus is included for directing a gas to blow away the molten metal. The gas may be air or oxygen. A feedstock for metal cutting operations according to the invention contains a roll of wire having a mild steel jacket and a carbon-containing core. The carbon in the core of the wire may be provided in the form of natural or synthetic graphite powder, and may further include an additive to accelerate delivery force or enhance molten metal flow.
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