EXPERIMENTAL INVESTIGATION ON ACTIVATED-TIG WELDING PARAMETERS USING AISI316L

MECHANICAL ENGINEERING

An attempt has been made to study the strength of welded joints of stainless steel 316-L by ACTIVATED-TIG WELDING process. The present research paper contributes to the ongoing research work on the use of SS 316-L austenitic stainless steel in industrial environments. The 316-L stainless steel is selected over other materials because of its distinct properties, cheaper cost and its availability in the market. 316-L stainless steel used is a boiler grade steel used in pressure vessels. This grade has high corrosion resistance and can be operated at elevated temperature.According to this type of welding the depth of penetration is high and HAZ is very low when compared to the other conventional welding methods. The analysis has been performed on the base metal. By using L9 Taguchi orthogonal arraytensile strength was taken as output response and Optical microscopy was also performed to correlate this process.The test results show that ANOVA models for ultimate tensile strength are significant to prove the weld efficiency of AISI316L austenitic stainless steel and to meet the requirements of oil and gas industries. The best parameters for A-TIG were found.

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