A simplified method to calculate the rolling force in hot rolling

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• 作者：Si Li ; Zhigang Wang ; Changming Liu…
• 关键词：Hydrodynamics method (HM) ; Hot rolling ; The specific roll pressure ; Friction hill ; Rolling force
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：88
• 期：5-8
• 页码：2053-2059
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design;
• 出版者：Springer London
• ISSN：1433-3015
• 卷排序：88

文摘

It is well known that there are sharp peaks (friction hills) in the specific roll pressure curves predicted by Sims formula and Цeликoв formula which result in large errors for hot rolling. In this paper, a new specific roll pressure formula is derived from the Navier-Stokes equation (N-S equation) by the hydrodynamics method (HM) with assumptions that strip materials take the characteristics of viscous fluid during plastic deformation of hot rolling processes. Results predicted by this HM formula, Sims formula, and Цeликoв formula were compared with experimental data. It was found the friction hills in the specific roll pressure curves predicted by Sims formula and Цeликoв formula are smoothed by this newly established formula and higher accuracy can be achieved in the calculation of the unit width rolling force.