Advances in gas metal arc welding process: modifications in short-circuiting transfer mode.
Authors :- Dinbandhu, Vishalkumar Prajapati, Jay J. Vora, and Kumar Abhishek
Publication :- Advanced Welding and Deforming: Handbooks in Advanced Manufacturing, 2021, Pages 67-104.
Demands for better quality and competent welds at a high rate of productivity are growing in several sectors, namely automobile, petrochemicals, medical instruments, food, energy, and oil and gas. The conventional gas metal arc welding (GMAW) processes are efficient enough to handle the demands in some aspects, but they fail miserably when thermo-susceptive metals like sheet-metals, sheathed thin plates, mild steel, stainless steel, low carbon alloys, aluminum, and their alloys come into the picture. Burn through, porosity, excessive penetration, inadequate fusion, warping, weld pool agitation, extreme spattering, and lack of skilled personnel are the utmost typical challenges allied with the traditional GMAW processes. Digital evolution in the field of GMAW allows the manufacturers and fabricators to eliminate the aforesaid problems by integrating software and digital signal processors with the power source, wire feeder, and gas regulation. The purpose of this chapter is to shed some light on such latest advancements carried out in the short-circuiting transfer mode of the GMAW process, along with their advantages, disadvantages, and applications