Spot welding

Econimocal, efficient and robust - spot welding as the number one welding technique in many industry branches

Spot welding is a resistance welding process, in which two sheets to be welded, are pressed together, by two opposing electrodes, at one point. A welding current is introduced into the sheet through the electrodes, which usually sit at the end of a spot welding gun or a cylinder. This ensures that the base material melts, usually at the transition between the plates.

To prevent the overheating of the electrodes, cooling water is frequently is conducted at the interior. The electrodes are often made of copper and its alloys, given the required power and thermal conductivity and the reduced transition resistance of the electrodes to the workpiece material.

Application and verification

Spot welding is an important process for the connection of body parts in the field of car manufacturing, as well as for the manufacturing of electronic articles, for example, electronic valves. Adaptive provisions such as IQR and genuine process controls, through efficient monitoring and verification systems, such as PQS, enable the safer welding of the most demanding materials.

We will be pleased to advise you with regard to the right combinations of materials or the appropriate welding controller.

Error patterns for spot welding – safely detected with PQS