Experimental and Numerical Investigations on Hot Tearing during Continuous Casting of Steel

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• 作者：Dipl.-Ing. Dr. mont. Gregor Arth (1)
  Sergiu Ilie (2)
  Robert Pierer (1) (3)
  Christian Bernhard (1)
  
  1. Montanuniversitaet Leoben ; Leoben ; Austria
  2. voestalpine Stahl GmbH ; Linz ; Austria
  3. Inteco Special Melting Technologies GmbH ; Bruck a.d. Mur ; Austria
  
• 关键词：Continuous casting ; Hot tearing ; Hot tear segregations ; Prediction ; Internal quality ; Stranggie脽en ; Hei脽rissseigerungen ; Entstehung ; Vorhersage ; Innenqualit盲t
• 刊名：BHM Berg- und H篓鹿ttenm?nnische Monatshefte
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：160
• 期：3
• 页码：103-108
• 全文大小：984 KB
• 参考文献：1. Pierer, R.; Bernhard, C.; Chimani, C.: A contribution to hot tearing in the continuous casting process, Revue de Metallurgie-CIT, 2 (2007), pp聽72鈥?3
  2. Bernhard, C.; Pierer, R.: A new hot tearing criterion for the continuous casting process, Proceedings of the 5th Decennial International Conference on Solification Processing, Sheffield, UK, 2007, pp聽525鈥?30
  3. Bernhard, C.; Pierer, R.: The nature of internal defects in continuously cast steel and their impact on final product quality, Iron and Steel Technology Conference Proceedings, Pittsburgh, PA, USA, 2010, pp聽193鈥?03
  4. Wagnieres, J. D.; Ackermann, P.: Le laboratoire d鈥檃ujourd鈥檋ui pour les brames de demain, La Revue Polytechnique, 6 (1985), no. 1464, 669鈥?73
  5. Xia, G.: Untersuchungen 眉ber das mechanische Verhalten von erstarrendem Stahl unter stranggu脽盲hnlichen Bedingungen, Doctoral Thesis, Leoben, Montanuniv., Chair of?, 1992
  6. Bernhard, C., Mechanische Eigenschaften und Ri脽anf盲lligkeit erstarrender St盲hle unter stranggie脽盲hnlichen Bedingungen, Doctoral Thesis, Leoben, Montanuniv., 1998
  7. Zirngast, J.: Zugversuche an direkt aus der Schmelze erstarrten Stahlschalen mit einem Erstarrungssimulator, Doctoral Thesis, Leoben, Montanuniv., 1993
  8. Hiebler, H.; J. Zirngast, J.; Bernhard, C.; Wolf, M.: Inner crack formation in continuous casting: stress or strain criterion?, Proceedings of the 77th Steelmaking Conference, Chicago, USA, 1994, pp聽583鈥?93
  9. Bernhard, C.; Hiebler, H.: Mechanical properties of solidifying steels under continuous casting conditions, Proceedings of the 7th International Continuous Casting Conference, Linz, 1996, 7/1鈥?/7
  10. Bernhard, C.; H. Hiebler, H.; Wolf, M.: The Influence of Phosphorus on the Mechanical Properties of Carbon Steels near the Melting Point at Low Strain Rate, Conference Proceedings of the Belton Memorial Symposium, Sydney, Australia, 2000, pp聽263鈥?72
  11. Ilie, S.; Reiter, J.; Presslinger, H.; Fluch, J.; Bernhard, C.: Characterization of hot tear segregations in continuous casting of slabs, Proceedings of the 6th European Continuous Casting Conference, Riccione, Italy, 2008, Paper 122
  12. Bernhard, C.; Pierer, R.; Tubikanec, A.; Chimani, C.: Experimental simulation of defect formation in the continuous casting process, SMEA Conference and Exhibition, University of Sheffield, UK, 2007, Session II, Paper 2
  13. Ackermann, P., Kurz, W.; Heinemann, W.: In situ tensile testing of solidifying Aluminium and Al鈥揗g shells, Materials Science and Engineering 75 (1985), no.聽1鈥?, pp聽79鈥?6
  14. Bernhard, C.; Hiebler, H.; Wolf, M.: Simulation of Shell Strength Properties by the SSCT Test, ISIJ International, 36 (1996), Supplement, pp聽163鈥?66
  15. Hiebler, H.; Bernhard, C.: Mechanical properties and crack susceptibility of steel during solidification, Steel Research, 70 (1999), no. 8鈥?, pp聽349鈥?55
  16. Bechet, S.; Beaujard, L.: Nouveau reactif pour la mise en 茅vidence micrographique du grain aust茅nitique des aciers tremp茅s ou tremp茅s-revenus, Revue de Metallurgie, 92 (1995), no. 10, pp聽923鈥?29
  17. Reiter, J.; Pierer, R.; Illie, S.; Pre脽linger, H.; Fluch, J.; Bernhard, C.: 脺ber die Bildung von Hei脽rissseigerungen in Stahl: Vergleichende Untersuchungen an Stranggussbrammen und Laborversuchsproben, BHM (Berg- und H眉ttenm盲nnische Montanhefte), 155 (2010), Nr.聽3, 129鈥?35
  18. Michelic, S. K.; Hartl, M.; Bernhard, C.: Thermodynamic and Experimental Study on the Modification of Nonmetallic Inclusions Through the Contact with CaO-Al2O3-MgO Slags, AISTech 2011 Proceedings, Volume聽II (2011), pp聽617鈥?26
  19. Bernhard, C.: A transient 2.5D-Solidification Model at the interface between laboratory experiment and the continuous casting process, The 7th International Conference on Physical and Numerical Simulation of Materials Processing, Oulu, Finnland, 2013
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  21. Hadler, M.: Bestimmung der kritischen Dehnung der Hei脽rissbildung in Abh盲ngigkeit der Erstarrungsstruktur mit Hilfe von Einwalzversuchen und Laborexperimenten, Master thesis, Leoben, Montanuniv., Chair of Ferrous Metallurgy, 2010.
  22. Rauter, W.: 脺ber die Bedeutung der Erstarrungsstruktur in Hinblick auf die Hei脽rissbildung beim Stranggie脽en von Vorbl枚cken, Hot Cracking Workshop, Technische Universit盲t Graz, 14th Dec. 2010
  
• 刊物类别：Engineering
• 刊物主题：Earth sciences
  Mineral Resources
  
• 出版者：Springer Wien
• ISSN：1613-7531

文摘

This paper focuses on hot tearing in continuous casting of steel and the experimental as well as numerical prediction of the hot tearing susceptibility. As a preliminary point, the current understanding of the appearance of this kind of defects and the resultant requirements for numerical und experimental hot tearing simulation will be briefly summarized. The next section describes the experimental determination of critical strain values by means of the proven SSCT (Submerged Split Chill Tensile) test and their implementation into a 1D-FV-solidification model (one-dimensional-finite-volume) developed in-house. Exemplarily, the model will be applied to the casting of two medium carbon steel grades on a slab casting machine.