Sealing face surfacing method of nuclear power station pressure releasing valve

Sealing face surfacing method of nuclear power station pressure releasing valve

  • CN 105,290,564 A
  • Filed: 11/10/2015
  • Published: 02/03/2016
  • Est. Priority Date: 11/10/2015
  • Status: Active Application
First Claim
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1. a nuclear power station pressure relief valve sealing surface weld deposit method, is characterized in that, described method comprises:

  • S1, heating tape is wrapped in pressure relief valve treat welding part surface, described heating tape connects heat treatment temperature control device, then wraps up part by heat-preservation cotton;

    S2, start heat treatment temperature control device heating tape heated, until part treat that built-up welding sealing surface is preheated to predetermined temperature;

    S3, welding equipment is utilized to treat built-up welding sealing surface weld deposit to what be enclosed with heat-preservation cotton part;

    S4, postwelding close heat treatment temperature control device, are naturally cooled by the part being enclosed with heat-preservation cotton.

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