Authors : R. Velu and Moses Raja Cecil
Abstract: Interface friction plays an important role in cold forming and forging. Since, this shear force if not taken care of would cause many defects and problems, it is essential to measure and control this entity. Using backward spike and forward disc forming test, this interface friction is quantified. A cylindrical billet is extruded to form a backward spike on one side and upset to form a forward disc on the other. Aluminium alloy 6063 is used as the specimen billet material. Simulations are carried out for various combinations of height/diameter of the specimen billet and for different spike diameters. The ratio of the height of the spike to the disc diameter is the measure of the interface friction. This ratio is then plotted in a graph to form the calibration curves using which the interface friction present during the forming process is quantified.
R. Velu and Moses Raja Cecil , 2013. Quantifying Interface Friction Using Backward Spike and Forward Disc Forming Test. International Journal of Soft Computing, 8: 143-148.