Rotary Friction Welding is a solid-state joining process used extensively currently owing to its advantages such as to weld heat input, high production efficiency, ease of manufacture and environment-friendly.

Materials difficult to weld by fusion welding processes can be successfully welded by rotary friction welding. The objective of this work is to join SA 213 T11 and SA 213 F12 low alloy steel tubes by rotary friction welding process and to optimize the welding parameter of, such as friction pressure, forging pressure and rotational speed.

The optimization of welding parameters was deduced by applying response surface methodology (RSM). Empirical relationships were developed to predict the mechanical properties such as tensile strength and the measurements were used to determine the tensile strength properties of the rotary friction welded low alloy steel tubes.

The optimum process parameters for better tensile strength of the rotary friction welded joint are found to be at rotation speed – 2400 rpm, friction pressure – 70 MPa, forging pressure – 70 MPa.

This article is shared by Selvaraj, K. Shanmugam, V. Balasubramanian and P. Selvaraj