A simplified method to calculate the rolling force in hot rolling

作者：Li, Si; Wang, Zhigang^*; Liu, Changming; Ruan, Jinhua; Xu, Zengbing

来源：International Journal of Advanced Manufacturing Technology, 2017, 88(5-8): 2053-2059.

DOI：10.1007/s00170-016-8890-z

• Hydrodynamics method (HM)
• Hot rolling
• The specific roll pressure
• Friction hill
• Rolling force

It is well known that there are sharp peaks (friction hills) in the specific roll pressure curves predicted by Sims formula and D broken vertical bar eD >> D<comma>DoD(2) 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 D broken vertical bar eD >> D<comma>DoD(2) formula were compared with experimental data. It was found the friction hills in the specific roll pressure curves predicted by Sims formula and D broken vertical bar eD >> D<comma>DoD(2) formula are smoothed by this newly established formula and higher accuracy can be achieved in the calculation of the unit width rolling force.

• 出版日期2017-2
• 单位武汉科技大学