IMPROVEMENT OF WELDING PROCEDURE TO GET ALUMINUM WELDER QUALIFICATION IN 5F POSITION

摘要

This invention relates to an improvement in welding procedure by eliminating causes of welding defects to get welder qualification in Aluminum welding. The welded test specimen ( 5F position: Sheet to Tube weld) was frequently getting rejected due to various welding defects such as Porosity, Excess Penetration, Lack of Fusion, Suck back, Mismatch, Cracks & Under cu t. Thus in accordance with this invention the welding procedure was improved in the aspects such as environmental conditions, proper cleaning and welding method. This improvement in welding procedure was eliminated all the welding defects , test piece was got approved and the welder got approval to do aluminum welding in 5F position.