A Combined Effect of Elasto-Plasto Hydrodynamic Lubrication in Cold Strip Rolling

1
Dr. Fathi Al-Shamma
Dr. Fathi Al-Shamma
2
Dr. fathi.a.alshamma
Dr. fathi.a.alshamma
1 baghdad university Iraq

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A Combined Effect of Elasto-Plasto Hydrodynamic Lubrication in Cold Strip Rolling Banner
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The aim of this study is to analysis the behavior of lubricants in cold strip rolling. An elastohydrodynamic lubrication analysis which takes account of elastic deformation of the roller while the metal strip deform plastically ,so that a relation between the E.H.L and plastohydrodynamic is used to determine the lubricant film thickness which will entrained in metal rolling operation .The viscosity variation and the variation between the pressure gradient and the speed of the roller with lubricant which is Newtonian up to some critical shear stress and thereafter behaves plastically is derived.The results are compared with the experimental one ,which shows good agreement with it.

14 Cites in Articles

References

  1. B Aggarwal,W Wilson (1980). Inst. mech. engrs. tribology convention 1968.
  2. B Aggarwal,W Wilson (1987). Thermal effects in hydro-dynamically lubricated strip rolling.
  3. D Bland,Hug Ford (1948). The calculation of Roll force and torque in cold strip rolling with tensions.
  4. H Cheng (1966). Basic Sciences - Friction & Lubrication.
  5. Cusano Conry (1992). Numerical method in the effect of an E.H.L. line contact.
  6. Higginson Dowson (1976). Elastohydrodynamic Lubrication.
  7. T A Dow,J Kannel,S S Bupara (1975). A hydrodynamic lubrication theory for strip rolling including thermal effect.
  8. Wang Dohda Kuniaki,Zhrgang (1998). Effects of average lubricant velocity and sliding velocity on friction behavior in mild steel sheet forming.
  9. A Grubin,I Vinogradova (1949). Investigation of the contact of machine components.
  10. Tennaple Lubrecht,Bosma (1991). Numerical simulation of the overall rolling of a surface feature in an E.H.L., line contact.
  11. Sanda Cleja-Tigoiu (2002). Small elastic strains in finite elasto-plastic materials with continuously distributed dislocations.
  12. Tennapel Venner (1990). Advanced multilevel solution of the E.H.L. line contact problem.
  13. W Wilson,J Walwit (1971). An isothermal hydrodynamic lubrication theory for strip rolling with front and back tension.
  14. Yuan,B Chern (1990). A thermal hydrodynamic lubrication analysis for entrained film thickness in cold strip rolling.

Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

Dr. Fathi Al-Shamma. 2011. \u201cA Combined Effect of Elasto-Plasto Hydrodynamic Lubrication in Cold Strip Rolling\u201d. Global Journal of Research in Engineering - A : Mechanical & Mechanics GJRE-A Volume 11 (GJRE Volume 11 Issue A7): .

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Journal Specifications

Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

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v1.2

Issue date

December 23, 2011

Language

English

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The aim of this study is to analysis the behavior of lubricants in cold strip rolling. An elastohydrodynamic lubrication analysis which takes account of elastic deformation of the roller while the metal strip deform plastically ,so that a relation between the E.H.L and plastohydrodynamic is used to determine the lubricant film thickness which will entrained in metal rolling operation .The viscosity variation and the variation between the pressure gradient and the speed of the roller with lubricant which is Newtonian up to some critical shear stress and thereafter behaves plastically is derived.The results are compared with the experimental one ,which shows good agreement with it.

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A Combined Effect of Elasto-Plasto Hydrodynamic Lubrication in Cold Strip Rolling

Dr. fathi.a.alshamma
Dr. fathi.a.alshamma

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