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In the paper presented are results of a research on influence of electrical and physico-chemical properties of materials being parts of multicomponent and multimaterial systems used in foundry practice on efficiency and effectiveness of microwave heating. Effectiveness of the process was evaluated on the grounds of analysis of interaction between selected parameters of permittivity and loss factor, as well as collective index of energy absorbed, reflected and transmitted by these materials. In the examinations used was a stand of wave guide resonance cavity for determining electrical properties and a stand of microwave slot line for determining balance of microwave power emitted into selected materials. The examinations have brought closer the possibility of forecasting the behaviour of multimaterial systems like e.g. model, moulding sand or moulding box in microwave field on the grounds of various electrical and physico-chemical properties. On the grounds of analysis of the results, possible was selecting a group of materials designed for building foundry instrumentation to be effectively used in electromagnetic field.
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111--114
Opis fizyczny
Bibliogr. 12 poz., tab., wykr.
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autor
- Department of Foundry Engineering, Plastics and Automation, Wroclaw University of Technology Smoluchowskiego Str. 25, 50-372 Wrocław, Poland
autor
- Department of Foundry Engineering, Plastics and Automation, Wroclaw University of Technology Smoluchowskiego Str. 25, 50-372 Wrocław, Poland
autor
- Department of Foundry Engineering, Plastics and Automation, Wroclaw University of Technology Smoluchowskiego Str. 25, 50-372 Wrocław, Poland
autor
- Department of Foundry Engineering, Plastics and Automation, Wroclaw University of Technology Smoluchowskiego Str. 25, 50-372 Wrocław, Poland
Bibliografia
- [1] Tables of physical & chemical constants, Retrieved February 12, 2014, from www.kayelaby.npl.co.uk/general_physics/2_6/2_6_5.html
- [2] Ashby, M., Shercliff, H., Cebon, D. (2011). Materials Engineering. vol. 1. Łódź: Publishing House Galaktyka Sp. z o. o.
- [3] Lisowski, M. (2004). Measurements of resistivity and permittivity of solid dielectrics. Wrocław: Publishing House of Wroclaw University of Technology.
- [4] Collier, R.,Skinner, D. (1985, 2007). Microwave Measurements, 3rd edition. London: Athenaeum Press Ltd, Gateshead.
- [5] Sheen, J. (2007). Amendment of cavity perturbation technique for loss tangent measurement at microwave frequencies. Journal of Applied Physics. 102, 1-6.
- [6] Kumar, A., Sharma, S. & Singh G. (2007). Measurement of dielectric constant and loss factor of the dielectric material at microwave frequencies. Progress In Electromagnetics Research. PIER. 69, 47-54.
- [7] Granat, K., Opyd, B., Stachowicz, M., Nowak, D. & Jaworski, G. (2013). Usefulness of foundry tooling materials in microwave heating process. Archives of Metallurgy and Materials. 58(3), 919-922.
- [8] Stachowicz, M., Nowak, D. & Granat, K. (2010). Test stand for evaluating effects of hardening moulding sands containing water-glass. Archives of Foundry Engineering. 12(2), 53-58.
- [9] Piwoński, T. (1977). Handbook of model-maker, moulder and core-maker. Warsaw: Scientific and Technical Publishing WNT.
- [10] Błaszkowski, K., Dembczyński, R., Feld, M., Galiński J. (1981). Principles of design of foundry instrumentation. Warsaw: Polish Scientific Publishers PWN. (in Polish).
- [11] Drożdżak, R. & Twardowski K. (2010). Permittivity of porous media – factors influencing its variability. Wiertnictwo Nafta Gaz. 27(1-2), 111-120.
- [12] Saechtling, H. (1955, 2000) Plastics. Handbook. Warsaw: Scientific and Technical Publishing WNT.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-8cccb110-93df-4e8a-ae04-caebeada6f21