The electron beam welding is a joining process which has shown its suitability for high voltage contact assemblies. A sharply focused electron beam has sufficient energy to penetrate the mostly thicker parts and generate a locally defined molten area so that the carrier component is only softened in a narrow zone (1 – 4 mm). This allows the attachment of Cu/W contacts to hard and thermally stable copper alloys as for example CuCrZr for spring hard contact tulips ''<xr id="fig:Contact tulips with CuW welded to CuCrZr carriers"/> (Fig. 3.12)''.<figure id="fig:Contact tulips with CuW welded to CuCrZr carriers">

 Fig. 3.12:Examples of contact tulips with Cu</Wcontacts electron beam weldedto CuCrZr carriers.figure>