A kind of Welding method of copper pipes

A kind of Welding method of copper pipes

  • CN 102,357,703 B
  • Filed: 09/22/2011
  • Issued: 10/23/2018
  • Est. Priority Date: 09/22/2011
  • Status: Active Grant
First Claim
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1. a kind of Welding method of copper pipes, it is characterised in that:

  • Include the following steps:

    Step 1:

    The pressure reducing valve valve for opening nitrogen cylinder, makes nitrogen flow through inside copper pipe welding position, drives copper inner air tube away,After the pressure reducing valve valve for immediately closing off nitrogen cylinder, nitrogen cylinder is removed, and the copper pipe end being connect with nitrogen cylinder is sealed, thenThe other end copper pipe end that will be far from nitrogen cylinder seals;

    Step 2:

    Open welding torch igniting;

    Step 3:

    First insertion tube is added with torch flame, flame shifted to outer tube after slightly hot;

    Step 4:

    Left-right and front-back moves welding torch, when joint for pipe being made to be uniformly heated to welding temperature, solder is added and is welded;

    The welding job time is carried out as more than four hours in same root copper pipe different parts, then is transferred to step 1;

    Step 5:

    After welding, torch flame is removed, shuts welding gun.

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