Measurement of quantity of heat in friction welding

Abstract

In order to measure a heat input (quantity of heat) generated during friction welding, a new type calorimeter of acryl resin was developed. The heat input during friction welding of a stainless steel was measured using the new calorimeter. Furthermore, the transient temperature distribution was estimated by finite-element analysis. The heat input measured during friction welding was in good agreement with the value calculated from friction torque, burn-off length, rotation speed and pressure. The friction heat input was much greater than the deformation heat input through the friction and upset stages in the brake-type friction welding. Copyright © 2005 by The International Society of Offshore and Polar Engineers.