Preconditiong and Inoculation of Low Sulphur Grey Iron

• Autorzy: Hossain Md Sojib S. , Bazlur B. Rashid A. K. M.

Identyfikatory

DOI

10.24425/afe.2020.131284

• Języki publikacji: EN

Abstrakty

EN

For quality grey cast iron production, the challenging issues are to avoid cementite structure and obtain the desired graphite morphology with proper matrix as well as hardness. The objective of the present research is to find out the right combination of preconditioner and inoculant that may help to overcome the challenges. In this work, sulphur content is kept low (0.01%). Two preconditioners namely metallurgical SiC and zirconium bearing FeSi with two types of inoculant are individually used to make four combinations of sample and for each case metal is poured into the green sand mould. Finally Brinell hardness and graphite morphology is observed in the thickest and thinnest portions of the castings. Metallurgical SiC with barium bearing inoculant gives better graphite morphology and hardness than strontium bearing inoculant, on the other hand zirconium bearing FeSi gives more satisfying result than SiC with every type of inoculant. Among all of the combinations Zr bearing preconditioner with Ba bearing inoculant gives good graphite morphology with best mechanical properties in both thickest and thinnest portions of the casting.

Słowa kluczowe

EN

grey iron; metallography; mechanical properties; cementite; preconditioner; inoculant

PL

żeliwo szare; metalografia; właściwości mechaniczne; cementyt

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2020
• Tom: Vol. 20, iss. 1
• Strony: 61--66
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Hossain Md Sojib S.

• Bangladesh University of Engineering and Technology Shahbagh, Dhaka – 1000, Bangladesh

autor

Bazlur B. Rashid A. K. M.

• Bangladesh University of Engineering and Technology Shahbagh, Dhaka – 1000, Bangladesh

Bibliografia

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• [5] Riposan, I., Chisamera, M., Stan, S. & White, D. (2009). Complex (Mn, X) S compounds-major sites for graphite nucleation in grey cast iron. China Foundry. 6(4), 352-358.
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• [8] Riposan, I., Chisamera, M., Stan, S., Ecob, C. & Wilkinson, D. (2009). Role of Al, Ti, and Zr in gray iron preconditioning/inoculation. Journal of Materials Engineering and Performance, 18(1), 83-87. DOI: doi.org/10.1007/s11665-008-9260-2.
• [9] Onsoien, M.I. & Skaland, T. (2001). Preconditioning of gray iron melts using ferrosilicon or silicon carbide. Transactions of the American Foundry Society. 109, 1-12.
• [10] Kopyciński, D. & Guzik, E. (2008). Effective inoculation of low-sulphur cast iron. Archives of Foundry Engineering. 8(4), 77-80.
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• [13] Martin, D.R., Moreno, J.R.S. & de Albuquerque Vicente, A. (2015). Effects of different inoculants on the microstructural characteristics of gray cast iron gg-25, hardness and useful life of tools. Acta Scientiarum. Technology. 37(4), 355-360. DOI: https://doi.org/10.4025/actascitechnol.v37i4.27460.
• [14] Xue, W. & Li, Y. (2016). Pretreatments of gray cast iron with different inoculants. Journal of Alloys and Compounds. 689, 408-415. DOI: https://doi.org/10.1016/j.jallcom. 2016.07.052
• [15] Callister, W.D. Jr. (2007). Mechanical Properties of Metals. Materials Science and Engineering. An introduction. (pp 159-160). John Wiley & Sons, Inc.
• [16] Schubert, W.D., Ta, A.T., Kahr, G., Benecke, T. & Lux, B. (1984). Influence of SiC additions on the microstructure of gray cast iron. MRS Online Proceedings Library Archive. 34. DOI: https://doi.org/10.1557/PROC-34-119.
• [17] Riposan, I., Chisamera, M., Stan, S., Ecob, C. & Wilkinson, D. (2009). Role of Al, Ti, and Zr in gray iron preconditioning/inoculation. Journal of Materials Engineering and Performance. 18(1), 83-87. DOI: https://doi.org/10.1007/s11665-008-9260-2.

Uwagi

PL

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