AWS C5.7 PDF download

Recommended Practices for Electrogas Welding

AWS C5.7 – Recommended Practices for Electrogas Welding

Electrogas Welding (EGW) is a specialized welding process having similarities to thegas metal arc welding (GMAW) or the flux cored arc welding (FCAW) processes forvertical position welding. The electrode deposits filler metal in the cavity formed bybacking plates or shoes that bridge the groove between the plates being welded. Theelectrode may be solid, metal cored, or flux cored, and additional shielding may or maynot be obtained from an externally supplied gas or gas mixture. The weld is usuallycompleted in a single pass.

Fundamentals of the process, including the various method of welding, are presented.A discussion of equipment, consumable, applications, and metallurgical advantagesand limitations is provided. The selection of process variables and operatingconditions and typical EGW procedures is then presented. Inspection of welds, andtraining and qualification of welding procedures and operators are described. Finally, atroubleshooting guide, safety considerations, and a supplementary reading list arepresented.