Elpatronic Ag

Elpatronc Ag

Peter Baessler

Gideon N Levy

Marcel Oberholzer

Theodor Lachmuth

Alan Marriott

Urs Maurer

Sheet metal edges to be welded are preheated prior to welding. At a given welding speed, this results in a smaller temperature gradient in the material to be welded. Consequently the welding speed can be increased, or material which would otherwise provide poor weld quality can be welded at a high temperature gradient. The preheating is carried out for example by high-frequency excitation of the material to be welded.

Process and apparatus for welding sheet metal edges

The measurement of the voltage over the welding point in order to supervise the welding quality takes place by means of voltage taps on the wire electrodes. As a result, the additional parasitic resistances during measurement by means of conventional voltage taps on the roller head or the roller head mounting are completely eliminated, which improves the measuring accuracy.

Method of voltage measurement over the welding seam in a roller head

Growing community of inventors

Bellikon, Switzerland

Peter Baessler