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Process For Hardfacing of Bore and Seat Face Intersection on Gate Valve

  • US 20090289209A1
  • Filed: 05/01/2009
  • Published: 11/26/2009
  • Est. Priority Date: 05/01/2008
  • Status: Abandoned Application
First Claim
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1. A method of treating a valve seat having a bore, a seat face, and a chamfered edge joining the bore and seat face, the method comprising:

  • a. forming a counter bore from the seat face into the bore that defines a recess; and

    b. directing a metal coating spray stream at chamfered edge, so that a metal coating is applied on the chamfered edge, the seat face, and into the recess.

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