Durable Service And High Precision Tungsten Calibrator

The volume of internal shrinkage means the distance from the end of tungsten electrode to the outer face of the PTA welding torch. Basically, it is 2-4mm. If the volume of internal shrinkage is over large that would lead to tungsten electrode electric discharge inside of copper nozzle which signifies the pilot arc come out inside the nozzle. If the volume of internal shrinkage is insufficient , arc stream compression is deficient as well as the energy of the arc stream. All of these reasons, here would be a phenomenon of burning down the copper nozzle.

It is effortless to do with it. It is proper for only alignment aperture of the tungsten calibrator and copper nozzle of PTA welding torch, and push the shaft of the tungsten calibrator into the nozzle 2-4mm. And the copper material is supportable that the customer would apply for a long time.