Friction welding is a pressure welding process in which two parts are welded together by friction. A part is rotated and pressed against a stationary counterpart under high pressure, and the resulting friction heats the joint surface. After the process temperature has been reached, a defined movement is carried out, during which, under the influence of pressure, the heated material pushes away and plastically deforms. The rotation is then stopped and the pressure is increased again; after reaching the specified pressure, the pressure is maintained for a certain period of time. No additional materials such as additional materials are required to assemble the parts.

The special feature of this process is the enormous flexibility to be able to produce a wide variety of material combinations.

Friction welding technology is known for the safe and economical connection of different materials.

Our products are made from a variety of materials. Our pipe material is usually made of S355J2+N structural steel, which is easy to work with and excellent weldability. The connectors are made from 42CrMo4V. The alloy steel has high strength, high toughness, good hardenability and high fatigue strength.

As a rule, any malleable metal can also be friction-welded. Although a connection made of copper-aluminum is generally considered not weldable due, among other things, to the specific electrical resistance of the copper, it is easily possible to produce a long-lasting connection with the friction welding process. Without complex end face processing, sawn or sheared surfaces can be joined by friction welding.

In order to reduce the tensions in the material caused by the friction welding process, we specifically heat the weld seam with our annealing system via induction. And carry out a targeted heat treatment process on the weld seam.

Induction is a flameless and contactless heating method that can heat up a defined area such as the weld seam and the adjacent heat-affected zone within seconds after friction welding without touching the component.

This creates a magnetic field around the inductor. This magnetic field specifically heats the material at the weld, as the inductor is specifically placed on the weld seam. As a result of the holding process, the temperature is kept constant for a fixed period of time so that the diffusion processes are completed, thereby reducing the tensions and bringing them to normal levels.