Electric heating – Metal heating – By arc
Patent
1995-12-13
1997-10-28
Paschall, Mark H.
Electric heating
Metal heating
By arc
21912155, 21912154, 21912151, B23K 1000
Patent
active
056814895
ABSTRACT:
A plasma arc torch includes a torch body defining a discharge axis, an electrode coaxially aligned on the discharge axis, a nozzle assembly positioned adjacent the discharge end of the electrode, and a heat shield removably secured on the torch body. A power supply delivers electrical current to the electrode to create an electrical arc, and a plasma gas is delivered so as to surround the arc. Also, a pressure sensing system is provided for sensing the pressure of the plasma gas and for disabling the power supply if there is insufficient gas pressure, such as when the heat shield is removed.
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Paschall Mark H.
The ESAB Group, Inc.
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