Improvement of Methods of Calculation of Forces in Hot Strip Rolling

Abstract:

A new solution Karman’s equation with the Mises plasticity condition is proposed for determining contact stresses in the slip zones for hot strip rolling. Replacement of the precise plasticity condition by an approximate condition in terms of primary stress leads to a substantial decrease in the length of slip zones and to increase of the rolling force. It was shown that, even at high frictional coefficients, the length of slip zones forms a significant part of the length of deformation region. On the basis of the obtained solutions the techniques for plotting curves of the normal contact stresses, determining the length of the slip zones, the neutral position of the cross section and rolling force refined.

• Periodical: Solid State Phenomena (Volume 299)
• Pages: 577-581
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.299.577
• Online since: January 2020
• Authors: Georgy L. Baranov*
• Keywords: Contact Stress, Hot Strip Rolling, Karman’s Equation, Length of Slip Zones, Neutral Cross Section, Rolling Force

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