Application of submerged arc welding technology with cold wire addition for drum shell long seam butt welds of pressure vessel components

摘要

Submerged arc welding is most widely used method for welding thick section in down hand position being a highly economical method for fabrication. As products must meet more stringent requirement of quality, requiring more flexible processes to reduce cost, further improvements is studied. Quality control aspects are also becoming more important to meet regulation and monitoring and control of welding processes, and the standardized testing of joints will meet all the requirements. This paper describes the experimental work carried out to study the effect of process parameters and weld metal property of thick section welds in SA 299 material using cold wire addition technology in tandem submerged arc welding for boiler drum shell fabrication. Improved results of mechanical and metallurgical properties obtained in this study are reported.