Objective Study the influence of welding process parameters on the quality of weld formation for a sealed automatic argon arc welding head,in order to meet the requirements of using an automatic tungsten electrode argon arc welding system to weld clean stainless steel thin-walled pipelines conveying high-purity media in the semiconductor and panel manufacturing industry.Method Select X2CrNiMo17-12-2 stainless steel pipe of diameter 12 x 2,Set corresponding welding process parameters to complete the welding of pipelines.Result Mechanical testing,non-destructive testing,and macroscopic metallographic testing are used to inspect the mechanical properties and structural characteristics of the weld seam,and the weld seam is free from external and internal defects;The tensile strength and various properties of the weld meet the specification requirements.Conclusion The automatic tungsten argon arc welding method and parameters can meet the welding requirements of X2CrNiMo17-12-2 pipes and similar stainless steel thin-walled pipes.
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