Generating discrete gas jets in plasma arc torch applications
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United States of America Patent
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Oct 6, 2009
Grant Date -
Dec 28, 2006
app pub date -
May 11, 2006
filing date -
May 11, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
The invention is generally directed to a nozzle for a plasma torch, the nozzle having a rear portion that defines at least a portion of a plasma chamber and a front portion that includes a first end and a second end. The first end is adjacent the rear portion, and the second end defines a plasma exit portion. One or more fluid passageways are disposed within the front portion and extend from the first end to the second end. The fluid passageways have passageway exit portions that provide one or more discrete jets of a secondary fluid to surround a plasma jet that is ejected from the plasma exit portion. Features of the invention include faster cutting, thicker workpiece piercing capability, reduced noise, improved arc stability, and increased consumable life, all of which improve productivity associated with plasma arc torch workpiece processing.
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