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Nozzle for a plasma arc torch with an exit orifice having an inlet radius and an extended length to diameter ratio

DC
  • US 5,977,510 A
  • Filed: 04/27/1998
  • Issued: 11/02/1999
  • Est. Priority Date: 04/27/1998
  • Status: Expired due to Term
First Claim
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1. A plasma arc torch comprising:

  • a torch body including a plasma gas flow path for directing a plasma gas from a plasma gas inlet to a plasma chamber in which a plasma arc is formed;

    a nozzle mounted relative to an electrode at a first end of the torch body to define the plasma chamber, the nozzle comprising a hollow, body portion defining a cavity and a substantially solid, head portion formed integrally with the body portion defining an exit orifice extending from the chamber,wherein the exit orifice has a converging inlet and an outlet, the inlet having a radius of curvature and the exit orifice having a length to diameter ratio of greater than 3.

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