National University of Science and Technology “MISIS”, Moscow, Russia:

V. N. Shinkin, DSc. Phys.-Math., Prof., shinkin-korolev@yandex.ru

The mathematical method for the determining of the technological parameters of the cold straightening of the thick steel sheet on the twelve-rolled sheet-straightening machine is proposed. The calculations allow us to determine the support reaction of working rollers, the residual stresses in the wall of the steel sheet, the proportion of plastic deformation on the sheet thickness and the relative deformation of the longitudinal surface fibers of the sheet under the straightening depending on the rollers’ radius, the pitch between the straightening machines’ working rollers, the magnitude of the sheet reduction by the upper rollers, the sheet thickness, as well as the elastic modulus, the yield stress and the hardening modulus of the sheet metal. The results of the research can be used at the metallurgical plants.

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