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METHOD FOR STARTING A MULTI-GAS PLASMA ARC TORCH

  • US 20120261392A1
  • Filed: 04/13/2012
  • Published: 10/18/2012
  • Est. Priority Date: 04/14/2011
  • Status: Active Grant
First Claim
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1. A method of starting a plasma arc torch for operating on a workpiece, the method comprising:

  • directing a pre-flow gas supply within the plasma arc torch;

    switching to a plasma gas supply that is different from the pre-flow gas supply;

    transferring a pilot arc to the workpiece after the pre-flow gas is switched to the plasma gas; and

    adjusting the pressure of the plasma gas after the pilot arc is transferred to the workpiece.

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