Szukana fraza: [Afiliacje = "Kielar, Š. \: VSB \- Technical University of Ostrava Faculty of Materials Science and Technology, Czech Republic"]

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Evaluation of Mixing Efficiency and How it Affects the Properties of the New Green Sand Mixtures

Š. Kielar M. Bašistová P. Lichy

Archives of Foundry Engineering | 2023 | vol. 23 | No 3 | 88-93 | DOI: 10.24425/afe.2023.146666

Słowa kluczowe Green sand mixture Eddy mixer mixing time Optimization of mixing Green compressive strength

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Abstrakt

The current trend in the preparation of green sand mixtures emphasizes the acceleration of the mixing process while maintaining the quality of the mixture. This requirement results in the necessity of determining the optimal conditions for mixing the mixture with a given mixer. This work aims to determine the optimal mixing conditions for the newly introduced eddy mixer LM-3e from the company Multiserw-Morek in the sand laboratory at the Department of Metallurgical Technologies, Faculty of Materials and Technology, VŠB - Technical University of Ostrava. The main monitored properties of mixtures will be green compressive strength and moisture of the mixture. The measured properties of the mixture mixed on the eddy mixer will be compared with the properties of the mixture mixed on the existing LM-2e wheel mixer. The result of the experiment confirmed that the eddy mixer is suitable for the preparation of a mixture of the same quality as the wheel mixer but with a significantly reduced mixing time.

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Bibliografia

[1] Pastierovičová, L., Kuchariková, L., Tillová, E., Chalupová, M. & Pastirčák, R. (2022). Quality of automotive sand casting with different wall thickness from progressive secondary alloy. Production Engineering Archives. 28(2), 172-177. https://doi.org/10.30657/pea.2022.28.20.
[2] Kamińska, J., Stachowicz, M., Puzio, S. et al. (2023). Studies of mechanical and technological parameters and evaluation of the role of lustrous carbon carriers in green moulding sands with hybrid bentonite. Archivives of Civil and Mechanical Engineering. 23, 11, 1-19. https://doi.org/10.1007/s43452-022-00550-1.
[3] Radkovský, F., Gawronová, M., Merta, V., Lichý, P., Kroupová, I., Nguyenová, I., Kielar, Š., Folta, M., Bradáč, J., Kocich, R. (2022). Effect of the composition of hybrid sands on the change in thermal expansion. Materials. 15(17), 6180, 1-15. https://doi.org/10.3390/ma15176180.
[4] Troy, E. C. et al. (1971). A mulling index applied to sand-water-bentonite. AFS Transactions. 79, 213-224.
[5] Gawronová, M., Kielar, Š. & Lichý, P. (2022). Mulling and its effect on the properties of sand-water-bentonite moulding mixture. Archives of Foundry Engineering. 22(3), 107-112. DOI: 10.24425/afe.2022.140243.
[6] Multiserw-Morek. Catalogue of moulding and core mass testing equipment. Propagation catalogue. Retrieved January 20, 2023, from http://multiserw-morek.pl/!data/attachments/odlewnictwo_pl_a4_24str.pdf. (in Polish).
[7] Silica sand Biała Góra. Sand Team. Technical sheet. Holubice. Retrieved January 20, 2023 from: https://www.sandteam.cz/wp-content/uploads/2022/09/Biala_Gora_v6.pdf (in Czech).
[8] Keramost. Activated bentonite. Product Safety data sheet. Retrieved January 20, 2023 from: https://www.keramost.cz/dokumenty/sds-bentonite-activated-en.pdf.

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Autorzy i Afiliacje

Š. Kielar

M. Bašistová

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P. Lichy

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ORCID:

VSB - Technical University of Ostrava Faculty of Materials Science and Technology, Czech Republic