It is in possession of material with high-melting, high density, anti-corrosion, good conductivity of heat and electricity, which is fixed by tungsten clamp and back cap in the torch. Normally, the diameters (2.4mm——8.0mm) are applied.
The rubber ring made of silicone loop it is superior to the ordinary rubble ring for sealing.
This type of Tungsten Calibrator for PTA welding torch, the main work purpose is to calibrate internal shrinkage of tungsten electrode that pledges discharge normally. Generally speaking, it is 2-4mm of the tungsten electrode shrinking inside the nozzle that we have to use it to measure.
The copper nozzle is the core parts of the PTA welding torch. And here is a pore of powder feeding inside of the nozzle that would delivery the powder to plasma arc without any intervention to complete the process of powder cladding.
The type of gas shield cover for PTA welding torch is for protecting gas against oxidation that it is to preserve well melting pool to keep the welding bead to form greatly.