Circumferential Residual Stresses in Tubes Estimated by Means of Deflection Method

摘要

Every process of metal forming causes formation of residual stresses in manufactured products. The residual stresses can be source of deformation. To determine, if residual stress from prior stage of processing is the cause of non-controllable distortion before next process a useful, cheap and easy deflection method can be used. In article were presented rules of this method, computer program for quick calculations and estimation of the level of surface residual stress in tubes manufactured in piercing - spreading process in Diescher's mill.