In the resistance welding process, the parts to be joined are pressed together and heated by an electric current until pools of molten material form at individual points between them. This operation requires high currents and large pressing forces.

During the welding of thick sheets, the forces between the electrode and the workpiece may reach as much as 450 MPa. This represents a considerable challenge for the welding electrodes that have to withstand these loads.

Welding electrodes made from our refractory metals and their alloys have a relatively high level of electrical conductivity while also exhibiting outstanding stability at high temperatures. They therefore have a considerably longer service life than conventional materials such as copper and copper alloys. Take a look for yourself and use our materials to increase your electrode service lives.

Our welding electrodes made of tungsten, molybdenum and their alloys are particularly suitable for welding highly conductive materials such as copper. They are used in the following processes: Spot welding, Roller welding, Projection welding, Upset welding.

The better the joint between the tungsten electrode and the copper electrode is, the better and more reproducible your welding results will be. This is because defective joins reduce thermal conductivity and cause the electrical resistance of the electrode to fluctuate.