An Analysis of Heat Affected Zone at Percussion Welding of Austenitic Steel Wires

Abstract

Capacity discharge percussion welding is nonconventional welding process where heat source is an electric arc obtained by discharging of capacitor bank. The arching time is very short, around 10 ms, and depends on a few parameters such as: capacity of capacitor bank, voltage, movement speed of welded pieces during welding. During arching a certain amount of material is melted and after that squeezed out by applied force used in welding process. Upon tese welding parameters depends many welded joint characteristics, quantity of squeezed material, heat affected zone properties, geometry of welded joint. All mentioned directly influence on mechanical properties of welded joints. In this paper is analysed the influence of capacity discharge percussion welding parameters on heat affected zone properies of welded joints.