Thermal Analysis of Inoculated Grey Cast Irons
Keywords:
Thermal Analysis, Grey Cast Irons, Inoculation, In-mould Inoculation, Ladle Inoculation
Abstract
A research was done to investigate the effect of 0.05…0.25 wt.% addition rate of Ca, Zr, Al – FeSi alloy, in ladle and in-mould inoculation of grey cast irons. In the present paper, the conclusions drawn are based on thermal analysis. For solidification pattern, some specific cooling curves characteristics, such as undercooling degree at the beginning of eutectic solidification and at the end of solidification, as well as recalescence level, were identified to be more influenced by the inoculation technique. In order to secure stable and controlled processes, representative thermal analysis parameters could be used, especially in thin wall grey iron casting production.
References
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[2]. Loper Jr., C.R., 1999, Inoculation of Cast IronSummary of Current Understanding, AFS Transactions, Vol. 107, pp.523-528.
[3]. Chisamera, M., Riposan, I. and Barstow, M., The Importance of Sulphur to Control Graphite Nucleation in Cast Iron, AFS International Inoculation Conference, Chicago, 1998.
[4]. Riposan, I., Chisamera, M., Stan, St. and Skaland, T., 2003, Graphite Nucleant (Microinsclusions) Characterization in Ca/Sr Inoculated Irons, International Journal of Cast Metal Research, Vol. 16, No.1-3, p. 105-111.
[5]. Riposan, I., Chisamera, M., Stan, St., Skaland, T. and Onsoien, M.I., 2001, Analyses of Possible Nucleation Sites in Ca/Sr Over Inoculated Gray Irons, AFS Transactions, Vol. 109, p. 1151-1162.
[6]. Riposan, I., Chisamera, M., Stan, St. and Skaland, T., 2005, A New Approach to Graphite Nucleation Mechanism in Gray Irons, Proceedings of the AFS Cast Iron Inoculation Conference, Sept. 29-30, 2005, Schaumburg, USA, pp.31-41.
[7]. Riposan, I., Chisamera, M., Stan, St., Ecob, C. and Wilkinson D., 2007, Role of Al, Ti, Zr in Grey Iron Preconditioning/Inoculation, World Foundry Organization (WFO) Technical Forum, Dusseldorf, Germany, 12-14.06.2007.
[8]. Sillen, R.V., 1998, Optimizing Inoculation Practice by means of Thermal Analysis, AFS International Inoculation Conference, Chicago.
[9]. Sillen, R.V, Novacast Technologies, www.novacast.se, 2006.
[10]. Sparkman, D., 1994, Understanding Thermal Analysis of Iron, AFS Transactions, Vol. 102, p. 229.
[11]. Sparkman, D. and Bhaskaram, C.A., 1996, Chill Measurement by Thermal Analysis, AFS Transactions, Vol. 104, p. 969-976.
[12]. Gunay, Y., Decirmenci, S., Metan, I. and Sirin, B., 2004, The Application of Adaptive Thermal Analysis System (ATAS) on Grey and Ductile Iron Production, 66th World Foundry Congress, 06-09.09. Istanbul, Turkey.
[13]. Chisamera, M., Riposan, I., Stan, St., Albu, C.B., Brezeanu, C. and Naro, R.l., 2007, Comparison of Oxy-sulfide Alloy Tablets and Ca-bearing FeSi75 for Late Inoculation of Low Sulfur Grey Irons, AFS Transactions, Vol. 115, Paper 07-023.
[2]. Loper Jr., C.R., 1999, Inoculation of Cast IronSummary of Current Understanding, AFS Transactions, Vol. 107, pp.523-528.
[3]. Chisamera, M., Riposan, I. and Barstow, M., The Importance of Sulphur to Control Graphite Nucleation in Cast Iron, AFS International Inoculation Conference, Chicago, 1998.
[4]. Riposan, I., Chisamera, M., Stan, St. and Skaland, T., 2003, Graphite Nucleant (Microinsclusions) Characterization in Ca/Sr Inoculated Irons, International Journal of Cast Metal Research, Vol. 16, No.1-3, p. 105-111.
[5]. Riposan, I., Chisamera, M., Stan, St., Skaland, T. and Onsoien, M.I., 2001, Analyses of Possible Nucleation Sites in Ca/Sr Over Inoculated Gray Irons, AFS Transactions, Vol. 109, p. 1151-1162.
[6]. Riposan, I., Chisamera, M., Stan, St. and Skaland, T., 2005, A New Approach to Graphite Nucleation Mechanism in Gray Irons, Proceedings of the AFS Cast Iron Inoculation Conference, Sept. 29-30, 2005, Schaumburg, USA, pp.31-41.
[7]. Riposan, I., Chisamera, M., Stan, St., Ecob, C. and Wilkinson D., 2007, Role of Al, Ti, Zr in Grey Iron Preconditioning/Inoculation, World Foundry Organization (WFO) Technical Forum, Dusseldorf, Germany, 12-14.06.2007.
[8]. Sillen, R.V., 1998, Optimizing Inoculation Practice by means of Thermal Analysis, AFS International Inoculation Conference, Chicago.
[9]. Sillen, R.V, Novacast Technologies, www.novacast.se, 2006.
[10]. Sparkman, D., 1994, Understanding Thermal Analysis of Iron, AFS Transactions, Vol. 102, p. 229.
[11]. Sparkman, D. and Bhaskaram, C.A., 1996, Chill Measurement by Thermal Analysis, AFS Transactions, Vol. 104, p. 969-976.
[12]. Gunay, Y., Decirmenci, S., Metan, I. and Sirin, B., 2004, The Application of Adaptive Thermal Analysis System (ATAS) on Grey and Ductile Iron Production, 66th World Foundry Congress, 06-09.09. Istanbul, Turkey.
[13]. Chisamera, M., Riposan, I., Stan, St., Albu, C.B., Brezeanu, C. and Naro, R.l., 2007, Comparison of Oxy-sulfide Alloy Tablets and Ca-bearing FeSi75 for Late Inoculation of Low Sulfur Grey Irons, AFS Transactions, Vol. 115, Paper 07-023.
Published
2008-11-15
How to Cite
1.
CHISAMERA M, STAN S, RIPOSAN I, STEFAN E, COSTACHE G. Thermal Analysis of Inoculated Grey Cast Irons. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Nov.2008 [cited 5May2024];31(2):11-6. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/3094
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