CIRP Encyclopedia of Production Engineering

Living Edition
| Editors: Int. Academy for Production Engineering, Sami Chatti, Tullio Tolio

Roll Levelling

  • L. Galdos
  • E. Silvestre
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-35950-7_16844-1

Synonyms

Definition

In accordance to DIN 8586 (2003) “Manufacturing processes forming by bending – classification, subdivision, terms and definitions,” roll levelling is classified as a bending process using rotating tool motion.

In more technological and industrial terms, roll levelling is the process where a sheet having flatness defects is straightened by imparting alternating bending operations using a set of bending rolls. The objective of the process is to minimize flatness imperfections and to level internal residual stresses of the material (Schuler 1998).

Theory and Application

Flatness Defects

During the hot and cold rolling of coils, work rolls are subjected to bending moments that produce heterogeneous plastic strains and thicknesses along the width of the sheet. As a consequence, different fiber lengths are generated, and diverse shape defects appear in the resulting coils. Furthermore,...

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References

  1. Bräutigam H, Becker S (2009) Leveling with roller levelers. Arku Maschinenbau GmbH, Baden-BadenGoogle Scholar
  2. DIN 8586 (2003) Manufacturing processes forming by bending - classification, subdivision, terms and definitions. Beuth, BerlinGoogle Scholar
  3. DIN EN 10131 (2006) Cold rolled uncoated and zinc or zinc-nickel electrolytically coated low carbon and high yield strength steel flat products for cold forming - tolerances on dimensions and shape; German version EN 10131:2006. Beuth, BerlinGoogle Scholar
  4. DIN EN 10051 (2010) Continuously hot-rolled strip and plate/sheet cut from wide strip of non-alloy and alloy steels – tolerances on dimensions and shape; German version EN 10051:2010. Beuth, BerlinGoogle Scholar
  5. Doege E, Menz R, Huinink S (2002) Analysis of the levelling process based upon an analytic forming model. CIRP Ann Manuf Technol 51(1):191–194.  https://doi.org/10.1016/S0007-8506(07)61497-8 CrossRefGoogle Scholar
  6. Hu J, Marciniak Z, Duncan J (eds) (2002) Mechanics of sheet metal forming, Butterworth, 2nd edn. Heinemann, OxfordGoogle Scholar
  7. Madej L, Muszka K, Perzyński K, Majta J, Pietrzyk M (2011) Computer aided development of the levelling technology for flat products. CIRP Ann Manuf Technol 60(1):291–294.  https://doi.org/10.1016/j.cirp.2011.03.137 CrossRefGoogle Scholar
  8. Mathieu N (2011). Modélisation numérique du procédé de planage des bandes minces [Numerical modelling of thin sheets roll levelling]. Doctoral dissertation, Université Paul Verlaine de Metz. (in French)Google Scholar
  9. Müller U, Krambeer H, Wolff A et al (2013) Optimisation of Final Plate Flatness by Set-Up Coordination for Subsequent Manufacturing Process (FinalPlateFlatness [sic]). Research Fund for Coal and Steel, European Commission, Final Report, EUR 25852 EN.  https://doi.org/10.2777/63845
  10. Silvestre E (2015) Sheet metal roll levelling optimization by means of advanced numerical models and development of new concepts for last generation materials. Doctoral dissertation, Mondragon UniversityGoogle Scholar
  11. Schuler GmbH (1998) Metal forming handbook. Springer, Berlin/HeidelbergCrossRefGoogle Scholar
  12. Semiatin SL, Marquard E, Lampman H, Karcher C, Musgrove B (eds) (2006) ASM Handbook, volume 14B: Metalworking: Sheet Forming (Vol. 14). ASM International, Materials ParkGoogle Scholar
  13. Tselikov AI, Smirnov VV (1965) Rolling mills. Trans from the Russian by MHT Alford (trans and ed: Tegart WJM). Pergamon Press, OxfordGoogle Scholar

Copyright information

© CIRP 2018

Authors and Affiliations

  1. 1.Mechanical and Industrial Manufacturing departmentMondragon UniversityMondragónSpain
  2. 2.Processing Lines and Rolling Mills, Fagor Arrasate S, Coop.MondragónSpain

Section editors and affiliations

  • Bernd-Arno Behrens
    • 1
  1. 1.Institute of Forming Technology and Machines (IFUM)Leibniz Universität Hannover (LUH)GarbsenGermany