Arc welding

Abstract

This book chapter deals with the basics of arc welding processes, heat source used for arc welding, different types of arc polarities, effect of shielding gases, and welding power sources necessary for arc welding. The fundamentals of formation of arc and arc physics were discussed. Small versions of conventional TIG, MIG, and PAW techniques are developed for high quality precision arc welding with ultralow energy input. In this chapter, different types of high precision arc welding process will be discussed. This chapter also describes the high productivity arc welding processes like twin wire gas tungsten arc cladding, plasma cladding, and laser-arc hybrid welding processes. Results showed that a significant increase in deposition rate and high productivity can be achieved with the high productivity arc welding processes.