Study on Deep Penetration Tungsten Inert Gas Welding Procedure of Super Duplex Stainless Steel S32750
In order to improve the welding efficiency of thin walled and large diameter pressure vessels products,the deep penetration tungsten inert gas(TIG)welding procedure of 5 mm S32750 super duplex stainless steel was studied.The welding procedure parameters were determined through welding tests and procedure qualification,and mechanical performance tests and corrosion tests were conducted on the welded joints.The results indicate that,deep penetration TIG welding can achieve one-time penetration and obtain reliable welding joints for 5 mm S32750 super duplex steel without groove.It can greatly improve the production efficiency of thin walled and large diameter super duplex stainless steel pressure vessels.
super duplex stainless steeltungsten inert gas weldingthin walledwelding procedureperformance
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