Adhesive interaction of metal products with a tool inherent in the process of metal forming. Defects on the products and tools out of the order are the consequences of this. The problem of the choice of material for the instrument has been considered. On the example of mandrel tube drawing mechanism of fracture of adhesive fracture surface layer of metal has been described. Based on an analysis of the solids adhesion hypothesized that the adhesive activity is associated with the electron work function of the material tools. By method of photo-stimulated exoelectron emission electron work function for a number of ceramic materials has been determined. The relationship between the electron work function of the material and surface roughness of workpiece was detected. Criterion for selecting the tool material is formulated and a method of tube drawing fundamentally new quality has been developed.
