Studies on power spinning of tubes

The mechanism of plastic flow in Power spinning of tubes is analysed. The total displacements in the three coordinate directions are determined by the grid line method, and the actual strain distribution established as functions of the coordinate positions, ‘r’, ‘θ’ and ’z’, Forces, evaluated on the basis of the work of plastic deformation method, are correlated with those experimentally measured with a three component electric strain gauge type spinning tool dynamometer, designed and fabricated for the purpose.