MAGNETARC WELDING--PECULIARITIES OF JOINING THIN WALL TUBES

摘要

The paper presents the MAGNETARC welding of thin tubes achieved with an original longitudinal magnetization system, designed to assure the magnetic flux concentration on tube wall. Process main stages are presented, from the arc initiation until the molten metal appears, upsetting is achieved and the weld forms. Infrared thermography was used for temperature measurements and process visualization. Macro and microstructural analysis accompanies the hardness tests made on correspondingly welded samples, demonstrating the process capability of producing sound, qualitative joints.