Technological Properties of Moulding Sands with Geopolymer Binder for Aluminium Casting

• Autorzy: Vaskova I. , Conev M. , Hrubovčáková M.

Identyfikatory

DOI

10.24425/123631

• Języki publikacji: EN

Abstrakty

EN

The use of environmentally friendly inorganic binders and new technologies for cores production is widely discussed topic in recent years. This paper contains information about new hot curing process for core making with alumina-silicate based inorganic binders – geopolymers. Main differences between hot cured geopolymers and hot cured alkali silicate based inorganic binders are discussed. The main objective of this research paper was to investigate basic technological properties of geopolymer binder system such as strength, compaction, storage ability and knock-out properties. For this purpose, three mixtures with different powder additives were prepared and tested in laboratory conditions using specific methods. Strength properties evaluation showed sufficient levels as well as knock-out properties measurement, even with additives B and C originally designed for the use with alkali silicate based two component binder systems. Additives B and C were considered compatible with geopolymer binders after casting production trial results. Storage ability of geopolymers seems to be more sensitive than of alkali silicate based binders in the same tested conditions. Mixtures with geopolymer binder showed 20% more decrease of strength compared to alkali silicate binders after 24 hours in conditions of 25 °C and 65 %RH.

Słowa kluczowe

EN

inorganic binder; geopolymer binder; sand core; knock-out properties; aluminium casting

PL

spoiwo nieorganiczne; spoiwo geopolimerowe; masa rdzeniowa; wybijalność masy formierskiej; odlew aluminiowy

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 4
• Strony: 45--49
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wykr.

Twórcy

autor

Vaskova I.

• Technical University of Košice, Faculty of Materials, Metallurgy and Recycling, Letná 9, 04200 Košice, Slovak Republic

autor

Conev M.

• Technical University of Košice, Faculty of Materials, Metallurgy and Recycling, Letná 9, 04200 Košice, Slovak Republic

autor

Hrubovčáková M.

• Technical University of Košice, Faculty of Materials, Metallurgy and Recycling, Letná 9, 04200 Košice, Slovak Republic

Bibliografia

• [1] Wang, J., Fan, Z., Wang, H., Dong, X. & Huang, N. (2007). An improved sodium silicate binder modified by ultra-fine powder materials. China Foundry. 4(1), 026-030.
• [2] Loechte, K. & Boehm, R. (2005). Cordis, the inorganic binder system–properties and experience. Casting plant + Technology International. 3, 6-11.
• [3] Müller, J. et al. (2015). INOTEC-Development in the field of inorganic binding systems-you will never more hear „it is not possible, it won’t work“. Slévárenství. LXIII(7-8), 235-240.
• [4] Dobosz, St.M., Jelínek, P. & Major-Gabryś, K. (2011). Development tendencies of moulding and core sands. China Foundry. 8(4), 438-446.
• [5] Polzin, H. (2014). Inorganic binders for mould and core production in the foundry. Berlin, Schiele & Schön GmbH.
• [6] Vykoukal, M., Burian, A. & Přerovská, M. (2017). Inorganic binder systems in the past, at present and in the future. Slévárenství. 65(11-12), 361-374.
• [7] Zaretskiy, L. (2015). Modified silicate binders new developments and applications. International Journal of Metalcasting. 10(1), 88-99.
• [8] Burian, A. (2005). Self-setting sands with geopolymeric binder system. Slévárenství. LIII(4), 153-156.
• [9] Pezarski, F., Smoluchowska, E. & Izdebska-Szanda, I. (2008). Application of geopolymeric binder in manufacturing of castings from ferrous alloys. Prace Inztitutu Odlewnictwa. XLVIII(2), 19-34.
• [10] Kamińska, J., Angrecki, M., Palma, A., Jakubski, J. & Wildhirt, E. (2017). The effect of additive “B” on the properties of CO2-hardened foundry sands with hydrated sodium silicate. Archives of Metallurgy and Materials. 62(3), 1637-1641.
• [11] Conev, M., Vasková, I., Hrubovčáková, M. & Hajdúch, P. (2017). Decoring behaviour of chosen moulding materials with alkali silicate based inorganic binders. Archives of Metallurgy and Materials. 62(2), 703-706.
• [12] M. Conev, I. Vasková. (2017). Shelf life of alkaline silicate binders. In Metalurgia Junior 2017, 12-13. June 2017 (pp. 13-16). Košice, Technical University of Košice. (in Slovak).

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).