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Tytuł artykułu

Effect of Microwave Heating on Moulding Sand Properties with Gypsum Binder

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The paper presents results of initial research on the possibility of applying microwave radiation in an innovative process of making casting moulds from silica sand, where gypsum CaSO4∙2H2O was acting as a binding material. In the research were compared strengths and technological properties of moulding mixture subjected to: natural bonding process at ambient temperature or natural curing with additional microwave drying or heating with the use of microwaves immediately after samples were formed. Used in the research moulding sands, in which dry constituents i.e. sand matrix and gypsum were mixed in the ratio: 89/11. On the basis of the results of strength tests which were obtained by various curing methods, beneficial effect of using microwaves at 2.45 GHz for drying up was observed after 1, 2 and 5 hours since moisture sandmix was formed. Applying the microwaves for hardening just after forming the samples guarantees satisfactory results in the obtained mechanical parameters. In addition, it has been noted that, from a technological and economic point of view, drying the silica sand with gypsum binder in microwave field can be an alternative to traditional molding sand technologies.
Rocznik
Strony
97--102
Opis fizyczny
Bibliogr. 30 poz., il., rys.
Twórcy
  • Wrocław University of Technology, Faculty of Mechanical Engineering, ul. I. Łukasiewicza 5, 50-371 Wrocław, Poland
  • Wrocław University of Technology, Faculty of Mechanical Engineering, ul. I. Łukasiewicza 5, 50-371 Wrocław, Poland
autor
  • Wrocław University of Technology, Faculty of Mechanical Engineering, ul. I. Łukasiewicza 5, 50-371 Wrocław, Poland
Bibliografia
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  • [2] Akerman, K. (1964). Gypsum and anhydrite. Warsaw: PWN. (in Polish).
  • [3] Chłądzyński, S. & Pichniarczyk, P. (2006). Gypsum and gypsum products in European standards. Materiały Budowlane. 6(10), 42-46. (in Polish).
  • [4] Fukami, T., Tahara, S., Nakasone, K. & Yasuda, C. (2015). Synthesis, Crystal Structure, and Thermal Properties of CaSO4*2H2O Single Crystals. International Journal of Chemistry. 15(2), 12-20.
  • [5] Mager, A., Moryson, G., Cellary, A. & Marciniak, L.(2011). Application of Rapid Prototyping techniques for the manufacture of metal products. Postępy nauki i techniki. 11(8), 174-182. (in Polish)
  • [6] Znamenskij, L.G. (2002). Vacuum – ultrasonic degassing the gipsum sands in investment casting. Litejnoe Proizvodstvo. 2(10), 26-27.
  • [7] Bobby, S.S. (2014). A preliminary investigation of gypsum bonded moulds by three dimensional printing. International Journal of Research in Engineering and Technoogy. 14(6), 501-507.
  • [8] Pawlak, M. (2010). The influence of the conditions of gypsum plaster preparation of its technological pro-perties. Archives of Foundry Engineering. 10(2), 95-98.
  • [9] PN-EN 13279-1:2009.
  • [10] Dziuba, M. & Cholewa, M. (2006). Ceramic core of open cellular skeletal cast. Archives of Foundry Engineering. 6(22), 170-176.
  • [11] Hosadyna, M., Dobosz, St. M. & Jelinek, P. (2009). The diffusion of sulphur from moulding sand to cast and methods of its elimination. Archives of Foundry Engineering. 9(4), 73-76.
  • [12] Skubon, M.J. (1978). Microwave Curing of Core Binders and Coatings. AFS Transactions.78 (09), 183-186.
  • [13] Wiedenmann, O., Ramakrishnan, R., Saal, P., Kılıç, E., Siart, U., Eibert, T.F. & Volk W. (2014). Local microwave heating of sand molds as a means to overcome design limitations in sand mold casting. Advances in Radio Science. 12, 21-28.
  • [14] Pigiel, M., Granat, K., Nowak, D. & Florczak W. (2006). Use of microwave energy in foundry processes. Archives of Foundry. 6(21), 443-452. (in Polish).
  • [15] Stachowicz, M., Granat, K. & Nowak, D. (2010). Application of microwaves for innovative hardening of environment-friendly water-glass moulding sands used in manufacture of cast-steel castings. Archives of Civil and Mechanical Engineering. 11(1), 209-219.
  • [16] Stachowicz, M. & Granat, K. (2014). Possibilities of reclamation microwave-hardened molding sands with water glass. Archives of Metallurgy and Materials. 14(2), 757-760.
  • [17] Stachowicz, M., Granat, K. & Nowak, D. (2012). Measurement of bending strength as a method for evaluating binder quality on the example of water-glass masses. Archives of Foundry Engineering. 12(1), 175-178. (in Polish).
  • [18] Stachowicz, M., Granat, K. & Nowak, D. (2010). Effect of hardening method and structure of linking bridges on strength of water glass moulding sands. Archives of Foundry Engineering. 10(2), 141-146.
  • [19] Banaszak, J. & Rajewska, K. (2013). Microwave drying of ceramic masses. Materiały ceramiczne. 65(2), 180-185. (in Polish).
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  • [22] 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).
  • [23] Blajerska, P. (2015). Influence of physico-chemical properties of sand grains of molding sand, heating in microwave, on electrical properties, deciding efficiency of process. Unpublished engineering thesis, Wroclaw University of Science and Technology, Wrocław, Poland. (in Polish).
  • [24] Dolina Nidy company catalog (2013 Juli). Technical data sheet. Retrieved Januar 7, 2016, from http://www.dolina-nidy.com.pl/images/stories/pdf/gb.pdf.
  • [25] BN-89/6733-12.
  • [26] Lewandowski, J.L. (1997). Materials for moulds. Kraków: Scientific Publishing House Akapit (in Polish).
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Uwagi
PL
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-f50709cf-2f14-4c38-a417-a370b0fecbdf
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