Asymmetric Melting Behavior in Twin Wire Arc Spraying with Cored Wires

Abstract

Asymmetric melting behavior of the electrodes is a process-related feature of the Twin Wire Arc Spraying (TWAS) technique since the heating of the negative connected wire is different from that of the positive connected wire. Due to these differences in melting behavior, a tracking of particle velocity and temperature for both electrodes individually is very important. Particle velocity and temperature have been recorded from anode side and cathode side by positioning the tracking device respectively. To draw the whole picture of the spraying, jet, particles have been tracked also from the top side of the spray gun. The goal of this study is to have an experimental data setup for model building and simulation of depositing process in TWAS. Corresponding measuring devices have been employed to investigate the TWAS process by spraying of massive and cored wires.