Weldability Studies of Novel Chromium Free Electrodes with Austenitic Grade Stainless Steels
Because of their strong corrosion resistance and good mechanical qualities, stainless steels are commonly used materials. Welding of stainless steel, on the other hand, produces hexavalent chromium vapours, which are hazardous to welders and operators in the welding area. A unique filler material has been created to minimise these hexavalent vapours, as suggested by the Occupational Safety and Health Administration. The primary goal of this chapter is to explore the development of chromium-free filler materials for welding austenitic stainless steel grades and to study the weldments’ mechanical and corrosion resistance. This case study contains filler material development as well as microstructure. characterisation, analysis of the effect of welding factors such as current, gas flow rate, and root gap on weldment qualities such as ultimate tensile strength, impact strength, hardness, and corrosion resistance, and Taguchi and Response Surface Methodology optimization of welding parameters (RSM). For an optimal current value of 130A, 11.79litres/min gas flow rate, and 2.33mm root gap, the weldments showed a maximum tensile strength of 324 MPa, a maximum hardness of 209VHN, and a minimum corrosion rate of 1.575e-004mils/year.
Author (s) Details
Department of Manufacturing Systems Engineering and Management, California State University, Northridge, US.
Dr. J. R. Nataraj
Department of Mechanical, RV College of Engineering, india.
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