Rolling of a weld pad on a flat surface. One-dimensional problem

Abstract

The analysis of modern welding methods shows that there are a number of factors in the weld pad, which together lead to a significant reduction in the wear resistance of the applied metal plating of the parts: a considerable variation of mechanical properties; Presence of inclusions and metallurgical defects; heterogeneity of structure and irregularity of surface solids in the length of the part; presence of unfavourable tensile stresses; reduction of fatigue of the parts on board; difficulty of mechanical treatment. The article solved the one-dimensional problem of non-responsive deformation of the weld pad at rolling and presented the main results of the work on the mathematical substantiation of the processes of rolling up the weld pad. One of the stages of the surfacing technological process was selected for the study, in particular, plastic deformation of the weld pad by rolling in a hard roller at elevated temperatures. Finishing processing by plastic deformation methods is accompanied by hardening of the surface layer, which is very important to increase the reliability of the parts. In the process of deformation, metals create a product shape and provide certain properties.