Examination of Electrical Resistance of Carburizers Used for Cast Iron Production

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Abstract

The publication presents the results of examination of selected carburizers used for cast iron production with respect to their electric resistance. Both the synthetic graphite carburizers and petroleum coke (petcoke) carburizers of various chemical composition were compared. The relationships between electrical resistance of tested carburizers and their quality were found. The graphite carburizers exhibited much better conductivity than the petcoke ones. Resistance characteristics were different for the different types of carburizers. The measurements were performed according to the authors’ own method based on recording the electric current flow through the compressed samples. The samples of the specified diameter were put under pressure of the gradually increased value (10, 20, 50, 60, and finally 70 bar), each time the corresponding value of electric resistance being measured with a gauge of high accuracy, equal to 0.1μΩ. The higher pressure values resulted in the lower values of resistance. The relation between both the thermal conductance and the electrical conductance (or the resistance) is well known and mentioned in the professional literature. The results were analysed and presented both in tabular and, additionally, in graphic form.

[1] (2006). Sorelmetal. On the nodular cast iron. Promotional literature. (in Polish). Warsaw: Ed. Metals & Minerals Ltd.

[2] Janerka, K., Jezierski, J. & Pawlyta, M. (2010). The properties and structure of the carburizers. Archives of Foundry Engineering. 10(1), 67-74.

[3] Janerka, K. (2010). Recarburization of liquid ferrous alloys. (in Polish). Gliwice: Ed. of the Silesian University of Technology.

[4] Janerka, K. (2007). The rate and effectiveness of carburization to the sort of carburizer. Archives of Foundry Engineering. 7(4), 95-100.

[5] Janerka, K., Jezierski, J. & Szajnar, J. (2012). Quality and properties of the cast iron produced on the steel scrap base. Archives of Materials Science and Engineering. 53(2), 92-101.

[6] Janerka, K., Bartocha, D. & Szajnar, J. (2009). Quality of carburizers and its influence on carburization process, Archives of Foundry Engineering. 9(2), 249-254.

Archives of Foundry Engineering

The Journal of Polish Academy of Sciences

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CiteScore 2016: 0.42

SCImago Journal Rank (SJR) 2016: 0.192
Source Normalized Impact per Paper (SNIP) 2016: 0.316

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