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Electrical steel sheet is an important material in the manufacture of various parts of electrical devices with high magnetic properties. The need to form the desired properties of the metal makes special demands on the organization of the production technology for both hot-rolled and cold-rolled sheets. The combined use of physical and mathematical research methods makes it possible to more accurately study various aspects of the formation of steel characteristics in order to improve its production technology.This paper presents the results of mechanical tests of an electrical steel grade obtained on the installation of the Gleeble 3800 for plane-strain compression. The tests were conducted at temperatures of deformation from 700 to 1250 °C and strain rates from 0.1 to 150 s-1 on samples in the parallelepiped form; as a result, curves of the dependence of the metal flow stress on the true deformation were obtained. Based on the results of physical modeling, a mathematical model was developed in the program «Deform 3D», which repeats the tests for plane-strain compression, in order to check the adequacy of the model. The curves of the dependence of the metal flow stress on the true deformation can be used to analyze the technological modes of hot rolling of electrical steel grades, and the developed mathematical model can be used to simulate the thermal state of the metal during the formation of inhomogeneity of properties on long flat products.
Keywords: Metal forming, electrical steel, plane-strain compression, modeling© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.