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Electrode with brazed separator and method of making same

  • US 6,452,130 B1
  • Filed: 04/16/2001
  • Issued: 09/17/2002
  • Est. Priority Date: 10/24/2000
  • Status: Expired due to Term
First Claim
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1. A method of fabricating an electrode adapted for supporting an arc in a plasma torch, comprising the steps of:

  • forming a front cavity in a generally planar front face of a metallic holder, the front cavity extending along an axis generally normal to the front face;

    fixedly securing an emissive element to the front cavity of the metallic holder;

    positioning a relatively non-emissive separator in the front cavity of the metallic holder such that the separator is interposed between and separates a portion of the metallic holder from the emissive element at the front face of the holder; and

    forming a rear cavity in the metallic holder such that a portion of the separator is exposed to the rear cavity.

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