Prediction of Chunky Graphite in Nodular Cast Iron on the Base of Numerical Simulation and Experimental Data

• Autorzy: Bauer B. , Mihalic Pokopec I. , Petrič M. , Mrvar P.

Identyfikatory

DOI

10.24425/amm.2020.131736

• Języki publikacji: EN

Abstrakty

EN

Chunky graphite has been recognized for a long time as one of the major problems in production of heavy section nodular cast iron. A great number of studies have been conducted to describe the chunky graphite formation, but a clear understanding of its appearance and a safe mastering of the melt preparation to avoid chunky graphite are not yet available. In the present work the cooling curves were recorded in large cone blocks and standard TA cup. According to measured data from the cone block, melt characteristics and heat transfer coefficient between casting and mould were adjusted in the ProCAST^® simulation software. For a near-eutectic nodular cast iron test melt with 0.7 wt.% Ni, relationship between the area of the cone block affected by chunky graphite and simulation software results has been observed, i.e., thermal modulus and time to solidus.

Słowa kluczowe

EN

chunky graphite; nodular cast iron; numerical simulation; cooling curve; microstructure

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2020
• Tom: Vol. 65, iss. 1
• Strony: 343--347
• Opis fizyczny: Bibliogr. 10 poz., fot., rys., tab.

Twórcy

autor

Bauer B.

• University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia

autor

Mihalic Pokopec I.

• University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, Croatia

autor

Petrič M.

• University of Ljubljana, Faculty of Natural Sciences and Engineering, Ljubljana, Slovenia

autor

Mrvar P.

• University of Ljubljana, Faculty of Natural Sciences and Engineering, Ljubljana, Slovenia

Bibliografia

• [1] J. Lacaze, L. Magnusson Åberg, J. Sertucha, Review of microstructural features of chunky graphite in ductile cast irons, in: Keith Millis Symp. on Ductile Cast Iron 2013, AFS, Nashville (2013).
• [2] I. Riposan, M. Chisamera, S. Stan, China foundry 7 (2), 163-170 (2010).
• [3] R. Källbom, K. Hamberg, L. E. Björkegren, Chunky Graphite - Formation and Influence on Mechanical Properties in Ductile Cast Iron, in. Proc. of the Gjutdesign 2005, VTT Symposium (2005).
• [4] P. Ferro, A. Fabrizi, R. Cervo, C. Carollo, J. Mater. Process Tech. 213, 1601-1608 (2013). DOI: 10.1016/jmatprotec.2013.03.012.
• [5] H. Loblich, Giessereiforschung 58 (3), 2-11 (2006).
• [6] O. Knustad, L. Magnusson Åberg, Chunky Graphite - effects and theories on formation and prevention, in: F. Unkić (ed.), International Foundrymen Conference - IFC 2014, Opatija (2014).
• [7] J. Sertucha, R. Suarez, I. Asenjo, P. Larranaga, J. Lacaze, I. Ferrer, S. Armandariz, ISIJ International 49 (2), 220-228, (2009).
• [8] P. Larrañaga, I. Asenjo, J. Sertucha, R. Suarez, I. Ferrer, J. Lacaze, Metall. Mater. Trans. A, 36A, 654-661 (2009). DOI: 10.1007/s11661-008-9731-y
• [9] I. Mihalic Pokopec, P. Mrvar, B. Bauer, Materials and Technology 51 (2), 275-281 (2017). DOI: 10.17222/mit.2015.355.
• [10] M. D. Chaudhari, R. W. Heine, C. R. Loper, AFS Transactions 82, 379-386, (1974).

Uwagi

EN

1. This work is partially supported by the foundry MIV d.d. Varaždin.

PL

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).