Analysis of the Graphite Shape in Cast Iron Obtaining by Inmold Process

• Autorzy: Gumienny G. , Kurowska B.
• Języki publikacji: EN

Abstrakty

EN

The paper presents results of research on the effect of magnesium on the graphite shape in cast iron obtained by Inmold process. For testing Lamet^® 5504 master alloy was used. The crystallization process of cast iron with various Mg concentrations was evaluated with use of the thermal and derivative analysis (TDA) method. The conditions were demonstrated for which a flake, vermicular and nodular graphite were obtained. Values of graphite “c” coefficient were analyzed. Results from it the significant differences between the assessment of the graphite on metallographic specimen and by the "c" coefficient. An effect of wall thickness of the casting on the graphite coefficient was indicated.

Słowa kluczowe

EN

theory of crystallization; inmold process; graphite shape

PL

teoria krystalizacji; technologia inmold; żeliwo sferoidalne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2015
• Tom: Vol. 15, iss. 3 spec.
• Strony: 15--20
• Opis fizyczny: Bibliogr. 24 poz., rys., tab., wykr.

Twórcy

autor

Gumienny G.

• Department of Materials Engineering and Production Systems, Lodz University of Technology, Stefanowskiego 1/15 Street, 90-924 Łódź, Poland

autor

Kurowska B.

• Department of Materials Engineering and Production Systems, Lodz University of Technology, Stefanowskiego 1/15 Street, 90-924 Łódź, Poland

Bibliografia

• [1] Guzik, E. (2010). Structure and mechanical properties as well as application of high quality vermicular cast iron. Archives of Foundry Engineering. 10(3), 95-100.
• [2] Guzik, E. & Dzik, S. (2009). Structure and mechanical properties of vermicular cast iron in cylinder head casting. Archives of Foundry Engineering. 9(1), 175-180.
• [3] Hanus, A. & Hanusová, P. (2012). Continuous Modification of Cast Iron by the FLOTRET Method. Archives of Foundry Engineering. 12(1), 43-48.
• [4] ASM Specialty Handbook Cast Irons. Editor: J.R. Davis. ASM International, 1996.
• [5] Guzik, E. (2007). Quality and Cost Assessment of Treatment with SiMg and NiCuMg Master Alloys vs Cored Wire in Production of Ductile Iron. Archives of Foundry Engineering. 60(4), 57-60.
• [6] Guzik, E. (2001). Some Selected Problems Concerning the Processes of Cast Iron Improvement. Monograph, 1M. Archives of Foundry. (in Polish).
• [7] Gunia, P. & Soiński, M.S. (2012). A Comparison of Selected Methods of Graphitizing Inoculation Applied after the Spheroidizing Treatment. Archives of Foundry Engineering. 12(2), 95-99.
• [8] Pacyniak, T. & Kaczorowski, R. (2010). Ductile cast iron obtaining by Inmold method with use of LOST FOAM process. Archives of Foundry Engineering. 10(1), 101-104.
• [9] Zych, J. & Żyrek, A. (2011). Vermicular cast iron production in the “Inmold” technology (in the Metalpol casting house) and the assessment of its thermal fatigue resistance. Archives of Foundry Engineering. 11(3), 255-260.
• [10] Pokusová, M. & Murgaš, M. (2006). Gating System for In-Mold Technology. Archives of Foundry. 6(18), 21-26.
• [11] Moore, A. & Weese, S. (1992). Is the future of ductile iron precarious? FOUNDRY – Foundry Management and Technology. 120, 34-37.
• [12] Szajnar, J. Stawarz, M. & Wróbel, T. (2008). The influence of external factors on morphology of graphite in grey cast iron. Archives of Foundry Engineering. 8(3), 159-162.
• [13] Szajnar, J. Stawarz, M., Wróbel, T. & Sebzda, W. (2009). Influence of electromagnetic field parameters on the morphology of graphite in grey cast iron. Archives of Foundry Engineering. 9(1), 181-184.
• [14] Orłowicz, W., Tupaj, M., Mróz, M., Guzik, E., Nykiel, J., Zając, A. & Piotrowski, B. (2009). Assessment of the influence of magnesium content on the shape and amount of graphite precipitation in spheroidal cast iron manufactured by Metal-Odlew s.c. Archives of Foundry Engineering. 9(4), 173-178.
• [15] Kuder, M. (2012). A Novel Method for the Oxygen Activity Measurement Applied in Control of the Ductile Iron Manufacturing Process. The Transactions of the Foundry Research Institute. LII(3), 31-44. DOI: 10.7356/iod.2012.10.
• [16] Bockus, S. & Zaldarys, G. (2009). Influence of the Section Size and Holding Time on the Graphite Parameters of Ductile Iron Production. Metallurgija. 48(1), 19-22.
• [17] Riposan, I., Chisamera, M., Kelley, R., Barstow, M. & Naro, R.L. (2003). Magnesium-Sulfur Relationships in Ductile and Compacted Graphite Cast Irons as Influenced by Late Sulfur Additions. AFS Transactions. 3(093), 1-15.
• [18] Imasogie, B.I. & Wendt, U. (2004). Characterization of Graphite Particle Shape In Spheroidal Graphite Iron Using A Computer-Based Image Analyzer. Journal of Minerals & Materials Characterization & Engineering. 3(1), 1-12.
• [19] Chmiela, J., Cybo, J. & Ciernicki, S. (1997). Fractal dimension of the fracture profile vs mechanical properties and stereological parameters of cast iron. Solidification of Metals and Alloys. 33, 52-57.
• [20] Jura, S. & Jura, Z. (2001). Effect of the chemical composition and the degree of graphite nodularity on mechanical properties of cast iron. Archives of Foundry. 20(2). (in Polish).
• [21] Fraś, E. & Górny, M. (2000). The use of the fractal geometry for the evaluation of the classification of graphite in cast iron. Solidification of Metals and Alloys. 2(42). 25-32. (in Polish).
• [22] Jura, S. & Stawarz, M. (2002). Stereological parameters of graphite and chemical composition specifying the mechanical properties of ductile cast iron. Archives of Foundry. 60(4), 446-453. (in Polish).
• [23] Guzik, E. & Kukułka, K. (2001). Shaping the structure of ductile cast iron in castings in the shape of plates of different thicknesses. Archives of Foundry. 14(2). (in Polish).
• [24] Pietrowski, S. (2010). Influence of reaction chamber shape on cast-iron spheroidization process in-mold. Archives of Foundry Engineering. 10(1). 115-122.