South Ural State University (Chelyabinsk, Russia)

A. V. Vydrin, Dr. Eng., Prof., Head of the Dept. of Processes and Machines for Metal Forming, vydrinav@susu.ru
V. S. Gorbunova, Postgraduate Student, Dept. of Processes and Machines for Metal Forming, vika.salkova6039@gmail.com
A. P. Pellenen, Cand. Eng., Associate Prof., Dept. of Processes and Machines for Metal Forming, pellenenap@susu.ru

Nosov Magnitogorsk State Technical University (Magnitogorsk, Russia)

A. M. Pesin, Dr. Eng., Prof., Dept. of Materials Processing Technologies, a.pesin@magtu.ru

The paper is aimed at a detailed study of the rolling-drawing process for short sheets containing of different monometals. The examined process is characterized by absence of pulling forces, which are applied to ends of sheets, and by asymmetry, which is expresses in correlation of circumferential speed values of rolling rolls. Development of the imitation model of this process, allowing to determine its implementation variability in the conditions of rigidly preset kinematics, is considered as both the aim and scientific novelty of this research. The developed model also considers possibility of charging short mono-metallic sheets in a roll gap under an angle and with difference in friction coefficients during the contact with work rolls and allows to determine the contact stresses. Use of this imitation model makes it possible for researchers to determine beforehand workable and non-realistic variants for deformation of short mono-metallic sheets via asymmetric rolling-drawing process. To achieve the formulated aim, the article presents conclusion of relationships describing the components of power balance equation of the rollingdrawing process for short sheets in the conditions of absence of longitudinal stresses at the entrance and exit of deformation area. Building of a possible kinematic speed fields was also realized; it takes into account possibility of charging a billet in a roll gas under an angle to the rolling axis. The imitation model, which was obtained in this research, displayed that the feasible area of the examined process is a discrete one.

The study was supported by the grant of the Russian Science Foundation (No. 23-79-30015).

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