Skip to main content

Deformations Arising During Air-Knife Stripping in the Galvanisation of Steel

  • Conference paper
  • First Online:
Progress in Industrial Mathematics at ECMI 2010

Part of the book series: Mathematics in Industry ((TECMI,volume 17))

Abstract

During sheet steel production, the steel surface is usually coated with metal alloy for corrosion protection. This can be done by passing the steel through a bath of the molten metal coating, and controlling thickness with a pair of air knives on either side of the ascending steel strip. Surface quality problems have arisen with recent developments in production. The process was considered at the 2009 Mathematics-and-Statistics-in-Industry Study Group in Wollongong (MISG09) and in subsequent investigations. Previous analyses are extended by the addition of shear terms and by exploring the effect of increased air-jet speeds. A first-order partial differential equation governs the system. This may be used to determine the steady-state coating shape and to study the evolution of any defects that may form.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 129.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 169.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 169.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Hocking, G.C., Sweatman, W.L., Roberts, M.E., Fitt A.D.: Coating Deformations in the continuous hot-dipped galvanizing process. In: Merchant, T., Edwards, M., Mercer, G. (eds.) Proceedings of the 2009 Mathematics and Statistics in Industry Study Group, pp. 75–89. University of Wollongong, Australia (2010)

    Google Scholar 

  2. Hocking, G.C., Sweatman, W.L., Fitt, A.D., Breward, C.: Deformations during jet-stripping in the galvanizing process. J. Eng. Math. 70, 297–306 (2011) doi: 10.1007/s10665-010-9394-8

    Google Scholar 

  3. Tuck, E.O.: Continuous coating with gravity and jet stripping. Phys. Fluid. 26(9), 2352–2358 (1983)

    Google Scholar 

  4. Tuck, E.O., Bentwich, M., Van der Hoek, J.: The free-boundary problem for gravity-driven unidirectional viscous flows. IMA J. Appl. Math. 30, 191–208 (1983)

    Google Scholar 

  5. Tuck, E.O., Vanden-Broeck, J.-M.: Influence of surface tension on jet-stripped continuous coating of sheet materials. Amer. Inst. Chem. Engineers J. 30, 808–811 (1984)

    Google Scholar 

  6. Tu, C.V.: Optimisation of lip gap for thin film coating in the jet stripping process. Proceedings of the 5th International Conference on Manufacturing Engineering. University of Wollongong, Australia (1990)

    Google Scholar 

  7. Thornton, J.A., Graff, H.F.: An analytical description of the jet-finishing process for hot-dip metallic coatings on strip. Metall. Mater. Trans. B 7B, 607–618 (1976)

    Google Scholar 

  8. Elsaadawy, E.A., Hanumanth, G.S., Balthazaar, A.K.S., McDermid, J.R., Hrymak, A.N., Forbes, J.F.: Coating weight model for the continuous hot-dip galvanizing process. Metall. Mater. Trans. B 38B, 413–424 (2007)

    Google Scholar 

  9. Tu, C.V., Wood, D.H.: Wall pressure and shear stress measurements beneath an impinging jet. Exp. Ther. Fluid Sci. 13, 364–373 (1996)

    Google Scholar 

  10. Hamdi, S., Schiesser, W.E., Griffiths, G.W.: Method of Lines, Scholarpedia 2(7), 2859 (2007) doi: 10.4249/scholarpedia.2859

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Winston L. Sweatman .

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2012 Springer-Verlag Berlin Heidelberg

About this paper

Cite this paper

Hocking, G.C., Sweatman, W.L., Fitt, A.D., Breward, C. (2012). Deformations Arising During Air-Knife Stripping in the Galvanisation of Steel. In: Günther, M., Bartel, A., Brunk, M., Schöps, S., Striebel, M. (eds) Progress in Industrial Mathematics at ECMI 2010. Mathematics in Industry(), vol 17. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-25100-9_36

Download citation

Publish with us

Policies and ethics