Abstract
When the cold roll formed products such as pipe, channel, angle, etc, are cut by press or saw, both cut-off edges open, and magnitude of the distortion differs. It is considered that the distortion occurs due to release of residual bending moment and residual twist moment. This report shows the residual moment that is measured by Sachs method, and also the calculation result of residual moment that is obtained by using of principle of minimum potential energy.
