Archive | 2019
Vacuum Thermal Magnetic-Pulse Welding of Cathode Assemblies
Abstract
The paper presents studies on the vacuum thermal magnetic-pulse welding (VTMPW) of the cathode assemblies from dissimilar alloys. To activate the welded surfaces and remove contaminants, it is proposed to preheat the unit assembled for welding in vacuum, with subsequent magnetic-pulse radial action through the dielectric container on the joining surfaces heated to temperatures below the melting point. The VTMPW process parameters and the limitations related to the mechanical fracture of the welded assembly, burning-off or faulty fusion, affecting the fixed joint efficiency, are identified. The microstructure analysis did not detect the formation of common grains; hardness in the joining zone was increased, which is typical for the formation of the compound in the solid phase.