Kinetics of Gas Emission from Heated Moulding Sands Together with the On-line Assessment of H2 and O2 Fractions - New Investigation Method

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Abstract

The new investigation method of the kinetics of the gas emission from moulding sands used for moulds and cores is presented in this paper. The gas evolution rate is presented not only as a function of heating time but also as a function of instantaneous temperatures. In relation to the time and heating temperature the oxygen and hydrogen contents in evolving gases was also measured. This method was developed in the Laboratory of Foundry Moulds Technology, Faculty of Foundry Engineering, AGH. Gas amounts which are emitted from the moulding sand at the given temperature recalculated to the time unit (kinetics) are obtained in investigations. Results of investigations of moulding sand with furan resin are presented - as an example - in the paper.

[1] Lewandowski, J.L. (1997). Materials for molds. Kraków: Akapit. (in Polish).

[2] Lewandowski, J.L, Solarski, W. & Pawłowski Z. (1993). Classification of molding and core terms of gassing. Przegląd Odlewnictwa. 5. (in Polish).

[3] Urbanik, E. (1964). Kinetics of gases from the dried core sand binders for organic. Unpublished doctoral dissertation, AGH, Department of Foundry, Kraków. (in Polish).

[4] Holtzer, M., Dańko, J., Lewandowski, J.L., i inni. Station for research of the volume and harmfulness of gases compounds from the materials used in foundry and metallurgical processes. AGH. Polska.; PL 398709 A1. Zgłosz. 2012-04-02; Biuletyn Urzędu Patentowego ; ISSN: 0137-8015 ; 2013 nr 21, s. 26.

[6] Holtzer, M., Waśniewska-Królikowska, D., Bobrowski, A., Dańko, R., Grabowska B., Żymankowska-Kumon, S. & Solarski, W. (2012). Research emissions of hazardous compounds from mass media bentonite and lustrous carbon in contact with the liquid metal. Przegląd Odlewnictwa. 62(3-4), 124-132. (in Polish).

[7] Mocek, J., Zych, J., Krubnik, Ł. (2014). Selected issues casting of Al - Si technology in full form, XVII International Scientific - Technical Conference Foundry Non-Ferrous Metals, Kraków – Starachowice. (in Polish).

[8] Żółkiewicz, Z. The kinetics of thermal decomposition foamed polystyrene pattern and the resulting gases influence on the content of hydrogen, nitrogen and oxygen in gray cast iron, in the “full mold process”. Unpublished doctoral dissertation, AGH, Department of Foundry, Kraków. (in Polish).

[9] Staronka, A., Holtzer, M., Piekarska, M. (1997). Fundamentals of Physical Chemistry of Metallurgical and Foundry Processes. Kraków: Wydawnictwo AGH. (in Polish).

[10] Zgondek, A.P. (2013). Zawartość wodoru w gazach wydzielających się w strefie przesuszonej piaskowej formy zalewanej żeliwem. Unpublished master thesis, AGH, Department of Foundry, Kraków. (in Polish).

[11] Baller, J., Köppen, M. (1994). Manual casting defects. Disadvantages associated with the masses of the flasks and prevention. IKO-Erbslöh Industriemineralien und Kohlenstoffe.

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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