Self-pressing electrothermal fusion method for joining plastic pipes

Self-pressing electrothermal fusion method for joining plastic pipes

  • CN 1,373,313 A
  • Filed: 03/21/2002
  • Published: 10/09/2002
  • Est. Priority Date: 03/21/2002
  • Status: Active Application
First Claim
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1. A kind of self-pressing electrothermal fusion method for joining of plastic tube, it is characterized in that self-pressing electrothermal fusion method for joining of the present invention is the thermal shrinkage that utilizes the plastics connecting sleeve, make connecting sleeve be subjected to uniform pressure with the aspect that is connected that is connected tubing, then to being wrapped in the electric heating wire heating power on the tubing, the plastics of fusing connection aspect, the plastically welding that makes the connection aspect together, concrete steps are as follows:

  • A, connecting sleeve reaming;

    adopt the plug of band taper the connecting sleeve endoporus to be carried out reaming, the connecting sleeve diameter of bore is swollen by jack or other compression tools;

    B, be connected and lay electric heating wire on the tubing;

    at first the connection surface that is connected tubing is cleaned, twined electric heating wire at the connection part that is being connected tubing then, and draw end element conneccting;

    C, assembling;

    be connected in the connecting sleeve that the straight insertion of tubing swells, adopt hot blast or hot water that connecting sleeve is heated then, the connecting sleeve internal diameter is shunk and tightly hoop be enclosed within and be connected on the tubing;

    D, welding connect;

    connect power supply, and the electrothermal wire heating, thus the internal surface of connecting sleeve and the outer surface thin layer that is connected tubing are welded together.Decide according to plastics fusing point and construction environment temperature current"on"time.

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