The Influence of Casting Practice on Stresses and Strains in 6xxx Billets – A Statistical and Modelling Study

  1. Dipl.-Ing. K. Ehrke Chairman2 and
  2. Prof. Dr. W. Schneider3
  1. B.R. Henriksen,
  2. S.E. Braathen and
  3. E.K Jensen

Published Online: 21 APR 2006

DOI: 10.1002/3527607331.ch27

Continuous Casting

Continuous Casting

How to Cite

Henriksen, B.R., Braathen, S.E. and Jensen, E.K. (2000) The Influence of Casting Practice on Stresses and Strains in 6xxx Billets – A Statistical and Modelling Study, in Continuous Casting (eds K. Ehrke and W. Schneider), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607331.ch27

Editor Information

  1. 2

    ALUMINIUM Essen GmbH, Sulterkamp 71, D-45356 Essen, Germany

  2. 3

    VAW Aluminium AG, Forschung und Entwicklung, Georg-von-Boeselager-Str. 25, D-53117 Bonn, Germany

Author Information

  1. Elkem ASA Research, Kristiansand, Norway

Publication History

  1. Published Online: 21 APR 2006
  2. Published Print: 29 NOV 2000

ISBN Information

Print ISBN: 9783527302833

Online ISBN: 9783527607334

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Keywords:

  • continuous casting;
  • modelling;
  • influence of casting practice on stresses and strains in 6xxx billets

Summary

The Elkem Lista plant produces about 100 000 tons of billets per year and occasionally, cracking may occur due to thermally induced stresses not being quite under control. This phenomenon is not fully understood and yet corrective actions to avoid this problem must be taken. Today, there is no real understanding of possible interaction effects between the operating variables on the cracking susceptibility. There is a need to understand how a new setting of a variable alters the total contribution of the interaction term(s) on the stresses and strains.

Due to shortcomings of the existing cracking criterions [1], it was decided to apply a statistical angle to the problem. Therefore, systematic modelling experiments based on statistical analysis of historical data were carried out in order to find the variables that most effectively prevent cracking. The results of numerical modelling (ALSIM/ALSPEN) were interpreted by multivariable analysis. In this paper, the focus will be on the stresses and stress development rather than strains with respect to cracking tendency.