Review of Studies on the Infl uence of Sheet Workpiece Roll Forming Parameters and Subsequent High-Frequency Induction Welding on the Geometry, Structure, and Properties of the Weld Joint

A review of recent studies is presented on the infl uence of roll forming and high-frequency induction welding parameters on the structure and properties of welded profi les produced from sheet workpieces. The results of numerical simulations and experimental investigations are summarized, revealing the effects of edge geometry, compression force, current frequency and power, inductor position, and line speed on the temperature fi eld and weld formation. For example, optimization of the compression force and inductor position can reduce energy consumption by 5–6%, decrease the width of the heat-affected zone, and improve structural uniformity. The regularities of changes in microstructure, hardness, and mechanical properties with variations in current frequency and edge convergence angle are generalized. Promising approaches to mathematical modeling are discussed, including multiphysics models and machine learning methods that enable prediction of weld properties and improvement of the effi ciency of forming and welding processes.Keywords: High-frequency induction welding, profi ling, forming parameters, welding parameters, weld characteristics.