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Abstract

Due to the observed increase in the amount of waste in landfills, there has been an increase in the demand for products made of biomaterials and the composition of biomaterials with petroleum-derived materials. The problem of waste disposal/management also applies to waste from the casting production process with the use of disposable casting moulds made with the use of organic binders (resins), as well as residues from the process of regeneration of moulding sands. A perspective solution is to add a biodegradable component to the moulding/core sand. The authors proposed the use of polycaprolactone (PCL), a polymer from the group of aliphatic polyesters, as an additive to a casting resin commonly used in practice. As part of this study, the effect of PCL addition on the (bio) degradation of dust obtained after the process of mechanical regeneration of moulding sands with organic binders was determined. The (bio) degradation process was studied in the environment reflecting the actual environmental conditions. As part of the article, dust samples before and after the duration of the (bio) degradation process were tested for weight loss by thermogravimetry (TG) and for losses on ignition (LOI).
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Bibliography

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[9] Major-Gabryś, K. (2016). Environmentally Friendly Foundry Moulding and Core Sands. Katowice-Gliwice, Archives of Foundry Engineering, ISBN 978-83-63605-24-7 (in Polish)
[10] Major-Gabryś, K. (2019). Environmentally Friendly Foundry Molding and Core Sands. Journal of Materials Engineering and Performance. 28(7), 3905-3911.
[11] Holtzer, M. (2001). Management of waste and by-products in foundries. Kraków: University Scientific and Didactic Publishers, AGH, Poland. (in Polish).
[12] Skrzyński, M., Dańko, R. & Czapla, P. (2014). Regeneration of used moulding sand with furfuryl resin on a laboratory stand. Archives of Foundry Engineering. 14(spec.4), 111-114. (in Polish).
[13] Dańko, R., Łucarz, M. & Dańko, J. (2014). Mechanical and mechanical-thermal regeneration of the used core sand from the cold-box process. Archives of Foundry Engineering. 14(spec.4), 21-24. (in Polish).
[14] Rui, T., Liu, J. (2010). Study of modified furan resin binder system for large steel castings. In Proceedings of 69th World Foundry Congress, 16 - 20 October 2010. Hangzhou, China, World Foundry Organization (pp. 996 – 999).
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[19] Major-Gabryś, K., Hosadyna-Kondracka, M., Skrzyński, M., Pastirčák, R. (2020). The quality of reclaim from moulding sand with furfuryl resin and PCL additive. The abstract paper at XXVI international conference of Polish, Czech and Slovak founders: 7-9.09.2020 r. Baranów Sandomierski, Poland.
[20] Major-Gabryś, K., Hosadyna-Kondracka, M. & Stachurek, I. (2020). Determination of mass loss in samples of post-regeneration dust from moulding sands with and without PCL subjected to biodegradation processes in a water environment. Journal of Applied Materials Engineering. 60(4), 121-129.
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Authors and Affiliations

K. Major-Gabryś
1
ORCID: ORCID
I. Stachurek
2
ORCID: ORCID
M. Hosadyna-Kondracka
2
ORCID: ORCID

  1. AGH University of Science and Technology, Faculty of Foundry Engineering, Mickiewicza 30, 30-059 Cracow, Poland
  2. ŁUKASIEWICZ Research Network - Foundry Research Institute, Zakopianska 73, 30-418 Cracow, Poland
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Abstract

The possibilities of using an inorganic phosphate binder for the ablation casting technology are discussed in this paper. This kind of binder was selected for the process due to its inorganic character and water-solubility. Test castings were made in the sand mixture containing this binder. Each time during the pouring liquid alloy into the molds and solidification process of castings, the temperature in the mold was examined. Then the properties of the obtained castings were compared to the properties of the castings solidifying at ambient temperature in similar sand and metal molds. Post-process materials were also examined - quartz matrix and water. It has been demonstrated that ablation casting technology promotes refining of the microstructure, and thus upgrades the mechanical properties of castings (Rm was raised about approx. 20%). Properties of these castings are comparable to the castings poured in metal moulds. However, the post-process water does not meet the requirements of ecology, which significantly reduces the possibility of its cheap disposal.
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Bibliography


[1] Puzio, S., Kamińska, J., Angrecki, M. & Major-Gabryś, K. (2020). The Influence of Inorganic Binder Type on Properties of Self-Hardening Moulding Sands Intended for the Ablation Casting Process. Journal of Applied Materials Engineering. 60(4), 99-108.
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[10] Rooy, E., Van Linden, J. (2015). ASM Metals Handbook, Properties and Selection: Nonferrous Alloys and Special-Purpose Materials. 2, 3330-3345.
[11] Bohlooli, V., Shabani Mahalli, M. & Boutorabi, S. (2013). Effect of ablation casting on microstructure and casting properties of A356 aluminium casting alloy. Acta Metallurgica Sininca (English letters). 26(1), 85-91.
[12] Grassi, J., Campbell, J. (2010). Ablation casting. A Technical paper, pp. 1-9.
[13] Jordon, L. (2011). Characterization of five different casting process on a common magnesium alloy. Inte Natl, Manuf. Sci. Eng. Conf. MSEC. Proceeding ASME.
[14] Wang, L., Lett, R. (2011). Microstructure characterization of magnesium control ARM castings. Shape Casting, pp. 215-222.
[15] Yadav , S., Gupta, N. (2017). Ablation casting process – an emerging process for non ferrous alloys. International Journal of Engineering, Technology, Science and Research. 4(4).
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[19] Holtzer, M. (2002). Development directions of molding and core sand with inorganic binders in terms of reducing the negative impact on the environment. Archives of Foundry. 2(3), 50-56. (in Polish).
[20] Major-Gabryś K. (2016). Environmentally friendly foundry molding and core sand. Kraków: Archives of Foundry Engineering. (in Polish)
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Authors and Affiliations

S. Puzio
1
ORCID: ORCID
J. Kamińska
1
ORCID: ORCID
K. Major-Gabryś
2
ORCID: ORCID
M. Angrecki
1
ORCID: ORCID

  1. ŁUKASIEWICZ Research Network - Foundry Research Institute, Zakopianska 73, 30-418 Cracow, Poland
  2. AGH University of Science and Technology, Faculty of Foundry Engineering, Mickiewicza 30, 30-059 Cracow, Poland

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