Welding suitability of other metals and material combinations

Other metallic materials and material pairings besides those presented in the last issues, such as nickel, copper, aluminium or steel, can also be joined by means of resistance pressure welding. The conductivity and melting point must always be taken into account. The different melting points and electrical conductivities are of particular importance for welding tasks between different material pairings.

The further apart these are in the materials to be joined, the more difficult it is to achieve a process-safe joint. It must also be taken into account that the often very strong alloying tendency of the electrode materials to the material of the parts to be joined can greatly reduce the possible electrode life.

Experience values can help with corresponding tasks for welding different types of materials. These are listed in literature on resistance welding, for example. A table on the welding suitability of different materials is listed, for example, in volume 25 of the Welding Practice “Resistance Pressure Welding – Fundamentals – Processes and Applications” by Manfred Krause. Of course, the manufacturers of the welding machines will also help you.

Here, too, you will find more information, as always, in the relevant DVS leaflets and from your Harms & Wende partner.