1Assistant Professor, Department of Mechanical Engineering, CSI College of Engineering, Ketty Near Ooty, The Nilgiris, Tamil Nadu, India - 643215
2Junior Research Fellow, National Intuit of Technology Trichy, Tamil Nadu, India
3Assistant professor, Department of Mechanical Engineering, M.A.M School of Engineering, Trichy, Tamil Nadu, India
*Corresponding author e-mail: raj.maddykanna@gmail.com
Online published on 17 January, 2015.
Welding is the process of joining two similar or dissimilar metals by heating them. It can be done with or without the application of external pressure and also it can be done with or without the application of filler metals. In that, Pulsed Gas Metal Arc Welding (P-GMAW) is a widely used process in the industries to weld the austenitic stainless steel. It offers spray metal transfer at low average currents, high metal deposition rate, versatility, less distortion and the ability to be used in automated robotic welding systems. This study mainly focuses on welded SS347H austenitic stainless steel. It has good strength and the ability to resist the corrosion. To obtain its mechanical and metallurgical properties a study has been performed on SS347H austenitic stainless steel tube. For that the weld joints were made on the tube with the constant process parameters viz., wire feed rate, travel speed and gas flow rate by using P-GMAW process. The mechanical tests viz., tensile test, bend test, and hardness test were carried out and the metallurgical tests viz., microstructure, bead geometry and corrosion tests were conducted on the welded specimens. The experimental results are observed and analyzed.
Austenitic stainless steel, Mechanical properties, Metallurgical properties P-GMAW
