Influence of Microwave Heating on the Molding Mass with Gypsum Binder Structure and Strength

• Autorzy: Paduchowicz Patrycja J. , Granat K. , Biały P.

Identyfikatory

DOI

10.24425/afe.2021.136086

• Języki publikacji: EN

Abstrakty

EN

The paper presents results of influence microwave drying on strength and technological properties of molding sand with gypsum binder researches, which, immediately after making and after the natural initial setting in air for 1, 2 or 5 hours, was heated with 250 W microwave power for 3, 6, 9 and 12 min time periods. The test was carried out on a mass containing (% -wt.): 88% Grudzeń-Las quartz sand, 12% "Dolina Nidy" plaster gypsum and 6% water. The loss of moisture content during natural drying and then microwave drying was determined, significant from the point of view of using the mass with gypsum binder in the production of products, using an environmentally friendly technology without casting incompatibilities. Additionally, the compressive strength of the mass was measured. The influence of both drying methods on the binder crystallization process and the associated mass strength was demonstrated, especially in terms of the possibility of selecting parameters and / or intensifying a specific drying method for use in the technology of manufacturing molds and foundry cores.

Słowa kluczowe

EN

foundry; foundry materials; foundry technologies; plaster gypsum; moulding and core sands; strength of masses

PL

odlewnia; materiały odlewnicze; technologie odlewnicze; gips; masy formierskie; wytrzymałość mas formierskich

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2021
• Tom: Vol. 21, iss. 1
• Strony: 113--118
• Opis fizyczny: Bibliogr. 29 poz., rys., tab., wykr.

Twórcy

autor

Paduchowicz Patrycja J.

• Wroclaw University of Technology, Department of Foundry Engineering, Plastics and Automation, Wrocław, Poland

autor

Granat K.

• Wroclaw University of Technology, Department of Foundry Engineering, Plastics and Automation, Wrocław, Poland

autor

Biały P.

• Wroclaw University of Technology, Department of Foundry Engineering, Plastics and Automation, Wrocław, Poland

Bibliografia

• [1] Borkowska, M. & Smulikowski, K. (1973). Rock forming minerals. Warszawa: Wydawnictwa Geologiczne. (in Polish).
• [2] Lopez-Beceiro J., Gracia-Fernandez C., Tarrio-Saavedra J., Gomez-Barreiro S. & Artiaga R. „Study of gypsum by PDSC”. Journal of Thermal Analysis and Calorimetry (2012) 109: 1177-1183.
• [3] Balance of mineral resources management in Poland and the world. Polish Geological Institute, Research Institute. Warszawa 2014. (in Polish)
• [4] Chłądzyński, S. & Pichniarczyk, P. (2006). Gypsum and gypsum products in European standards. Materiały Budowlane. 6(10), 42-46. (in Polish).
• [5] Akerman, K. (1964). Gypsum and anhydrite. Warszawa: PWN. (in Polish).
• [6] Hazzat M., Sifou A., Ansalane S. & Hamidi A. (2019). Novel approach to termal degradation kinetics of gypsum: application of peak deconvolution and Model-Free isoconversional method. Journal of Thermal Analysis and Calorimetry. 140 (2).
• [7] Badens E., Veesler S., Bojstelle R. (1999). Crystallization of gypsum from hemihydrate in presence of additives. Journal of Crystal Growth. 198-199. P. 704-709.
• [8] Singh N.B., Middendorf B. (2007). Calcium sulphate hemihydrate hydratation leading to gypsum crystallization. Progress in Crystal Growth and Characterization of Materials. (53)7. 57-77.
• [9] Pigiel M. & Granat K. (1997). Application of microwave heating in foundry. Krzepnięcie Metali i Stopów. 33/35. (in Polish).
• [10] Parosa R. & Reszke E. (2000). Application of the microwave technique in foundry. Krzepnięcie Metali i Stopów. 2(2000), 419-425. (in Polish).
• [11] Pawlak M. (2010). The influence of composition of gypsum plaster on its technological properties. Archives of Foundry Engineering. 10(4/2010), 55-60.
• [12] Granat K., Paduchowicz P., Dziedzic A., Jamka M. & Biały P. (2020). Impact of hardening methods on the moulding sand’s properties with gypsum binder. Archives of Foundry Engineering. 4(20). 13-17. 10.24425/afe.2020.133342.
• [13] Nowak D., Gal B., Włodarska A. & Granat K. (2019). The influence of microwave drying parameters on the properties of synthetic moulding sands. Archives of Foundry Engineering. 4(19). 51-54.
• [14] Gupta M. & Leong W. W. (2007). Microwaves and etals. Wiley. Azja 2007.
• [15] Kowalski S., Rajewska K. & Rybicki A. Fizyczne podstawy suszenia mikrofalowego. Poznań: Wydawnictwo Politechniki Poznańskiej 2005 (in Polish).
• [16] Kaczmarska K., Grabowska B. & Drożyński D. (2014). Analysis of selected properties of microwave-hardened molding sands bound with starch-based binders. Archives of Foundry Engineering. 4(14). 51-54. (in Polish).
• [17] Banaszak J. & Rajewska K. (2013). Microwave drying of ceramic masses. Materiały odlewnicze. 2(2013), 180-185. (in Polish).
• [18] Biały P. (2019). Selection of the method for curing environment-friendly moulding sands with a gypsum binder. Unpublished master thesis, Wroclaw University of Science and Technology, Wrocław, Poland. (in Polish).
• [19] Zhenjun W., Nan D., Xiaofeng W. & Jie Z. (2020). Laboratory investigation of effects of microwave heating on early strength of cement bitumen emulsion mixture. Construction and Building Materials. 236(20). 10.1016/j.conbuildmat.2019.117439
• [20] Jinxin H., Guang X., Yunpei L., Guozung H. & Ping C. (2020). “Improving coal permeability using microwave heating technology – A rewiev”. Fuel. 266(2020). 10.1016/j.fuel.2020.117022
• [21] Chaouki J., Farag S., Attia M. & Doucet J. (2020). The development of industrial (thermal) processes in the context of sustainability: The case of microwave heating. The Canadian Journal of Chemical Engineering. 98(2020). 832-847.
• [22] Gajmal S. & Raut D.N. (2019). A review of opportunities and challenges in microwave assisted casting. Recent Trends i Production Engineering. 2(2019). 1-17.
• [23] Paduchowicz P., Stachowicz M., Baszczuk A., Hasiak M. & Granat K. (2020). Evaluation of the chemical composition, TG – DTA and tensile strength tests of commercial gypsum kinds for foundry sandmixes application. Archives of Foundry Engineering. 2(20), 59-64.
• [24] Dolina Nidy company catalog (2013 Juli). Technical data sheet. Retrieved Januar 7, 2016, from http://www.dolinanidy.com.pl/images/stories/pdf/gb.pdf
• [25] Lewandowski J. L. (1997). Materials for foundry mass. Kraków: Akapit. (in Polish).
• [26] Blajerska, P. (2016). Determination of the possible applicability of microwave in production of casting plaster mould. Unpublished master thesis, Wroclaw University of Science and Technology, Wrocław, Poland. (in Polish).
• [27] Paduchowicz P, Stachowicz M. & Granat K. (2017). Effect of microwave heating on moulding sand properties with gypsum binder. Archives of Foundry Engineering. 3(2017), 97-102.
• [28] PN-83/H-11070
• [29] PN-83/H-11073

Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).