A New Technique for investigating Surface Flow in Metal-working Processes

Abstract

DURING the plastic deformation of metals in shaping processes, there is relative movement between the flowing metal and the tools. An attempt was made by Siebel and Osenberg¹ to deduce this relative movement by noting the distortion of a grid scribed on the surface of strip before further rolling. The accuracy was not high, however, and the method yielded little information on surface flow.