Method and equipment for induction heating and welding

Method and equipment for induction heating and welding

  • CN 1,730,221 B
  • Filed: 08/06/2004
  • Issued: 07/04/2012
  • Est. Priority Date: 08/06/2004
  • Status: Active Grant
First Claim
Patent Images

1. realize the butt welding of steel tube eddy-current heating welding method of welding automatically for one kind, described eddy-current heating welding method comprises:

  • A, two steel pipe mouths of pipe to be welded are smooth with the mouth of pipe with the method for machining, guarantee that the mouth of pipe after smooth is perpendicular to the steel pipe central axis;

    B, pipe-welding machine is placed in two steel pipes to be welded;

    Button on the operating operation box panel starts pipe-welding machine, and walking mechanism drives pipe-welding machine motion in pipe;

    When detecting the weld job position;

    The walking mechanism stop motion, the electromagnetic brake of walking mechanism moves immediately, a pipe-welding machine temporarily is fixed on the mouth of pipe place of a steel pipe with frictional force;

    C, operate the positioning motor rotation of this pipe-welding machine locator;

    Locating piece is released;

    Frictional force between locating piece and the tube wall stably is fixed on steel pipe mouth of pipe place with this pipe-welding machine, and at this moment, another pipe-welding machine has got in another root steel pipe;

    D, operate the positioning motor rotation of another pipe-welding machine locator;

    Locating piece is released;

    Frictional force between locating piece and the tube wall stably is fixed on another root steel pipe mouth of pipe place with another pipe-welding machine;

    Because two pipe-welding machines are through screw mechanism or the soldering fluid cylinder pressure is semi-rigid is slidingly connected, therefore the mouth of pipe of two steel pipes links together with one heart, and has certain clearance;

    E, outer counterpart induction heater is installed in the mouth of pipe place of two steel pipes;

    An induction heating power connects the superaudio transformer or the high frequency transformer of both sides, mouth of pipe center induction heating circle, and another induction heating power connects mouth of pipe center induction heating circle superaudio transformer or high frequency transformer;

    F, startup are installed in the electric grinder on the outer counterpart induction heater, and electric grinder attaches rust along two steel pipe mouth of pipe places rotation cleaning mouths of pipe;

    G, operation are installed in screw mechanism or the soldering fluid cylinder pressure on another pipe-welding machine, and two pipe-welding machines move relative to sliding, and two mouths of pipe closely contact;

    H, induction heating power of startup make the induction heating circle line up heating preheating of both sides, mouth of pipe center, and two pipe-welding machines continue to slide relatively, and two mouths of pipe contact with certain pressure;

    I, maintenance pipe-welding machine continue to slide relatively, and two mouths of pipe are with certain pressure contact;

    J, start another induction heating power, the induction heating circle at mouth of pipe center is heated to two mouths of pipe at short notice and is mecystasis;

    K, the screw mechanism or the soldering fluid cylinder pressure that start on the pipe-welding machine once more impose certain pressure, weld together two steel pipes;

    After l, the adjustment induction heating power power output, start the outside counterpart induction heater power supply of induction heating power once more, the mouth of pipe after the welding is heat-treated.

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