The computer simulation of lubricated cold rolling processes

Tze Chi Hsu*, Hung Mo Wu, Ching-Hua Hung

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A realistic friction model for lubricated cold rolling process with front and back tension is developed. The model combines a rigid-plasticity finite element code with a lubrication analysis. The rolls are assumed to be rigid and uniform deformation and isothermal conditions are assumed to prevail. The surface roughness effect on lubricant flow is included by using a average Reynolds equation. The active lubrication regime and appropriate friction factor can then be expressed in terms of internal interface variables in addition to the more traditional external variables. These internal variables include mean lubricant film thickness, workpiece roughness and roll roughness. The external variables are interface pressure and sliding speed. Numerical results using the coupled code such as roll separating force and roll torque under different rolling conditions are compared with experimental investigation. The simulation results are in good agreement with experimental data.

Original languageEnglish
Pages (from-to)191-196
Number of pages6
JournalTribology Transactions
Volume44
Issue number2
DOIs
StatePublished - 1 Jan 2001

Keywords

  • Friction
  • Lubrication analysis
  • Surface roughness

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