Development of the theory of metal forming processes (scientific review). Part 1

The paper describes the role of metallurgists-researchers from Chelyabinsk and Magnitogorsk in the deve¬lopment of the theory and practice of metal forming processes. Significant contribution to the creation of new forming processes was made by V.N. Vydrin, the organizer of the Rolling Department of the Chelyabinsk Polytechnical Institute (now South Ural State University). He founded a problem laboratory “New Technologies and Processes of Rolling”, one of a few laboratories in higher educational institutions of the country. In this laboratory the staff of the Rolling Department under the guidance of Prof. V.N. Vydrin solved theoretical issues on the basis of the energy theory and developed new technological processes of rolling and equipment for the implementation of these processes. Examples of such developments are creation of rolling-drawing and rolling-forging processes, rolling in multiroll openings, rolling of periodic profiles, rolling of high-preparedness shape profiles and roll-die drawing. The work done by the department in the field of continuous rolling and scientific schools of V.N. Vydrin and M.I. Boyarshinov who worked in effective cooperation on the development of the rolling theory in multuroll openings should also be mentioned. The staff of the department “Machine-Building and Metallurgical Technologies” of the G.I. Nosov Magnitogorsk State Technical University is working effectively in the field of bimetal wire production, powder metallurgy, production of layered composites. Much work is also done in the field of hardware production, designing and formation of coatings in metal forming processes, qualimetry of metallurgical products and processes, formation of the structure and properties of ultra-fine grained carbon steels by strain-induced structure refinement. A new technique for prognosticating mechanical properties and the stress-strain state in the processes of forming steel billets with a variety of structural heterogeneity is proposed.