Examining of slurries and production of moulds by spraying method in lost wax technology

• Autorzy: Nadolski M. , Konopka Z. , Łągiewka M. , Zyska A.
• Języki publikacji: EN

Abstrakty

EN

The work presents the results of investigation centred around the selection of a ceramic slurry composition if ceramic fibre is applied as a component of moulding material used for the lost wax technology. Producing a ceramic material of assumed parameters demands for changing the surface properties of the mineral grains. The critical concentration of solid particles or the gel point depends on the size of mineral particles, their shape and ability to aggregate. This ability has been achieved by modifying their surface properties by adding some polymer and the wetting agent (surfactant), which are adsorbed. Using the fibre material has required developing a method of its applying to the pattern set. The technology of multi-layer spraying has been recognised as the most advantageous one. The performed laboratory experiments have allowed for determining both the material composition and the parameters of its applying, such as air pressure, nozzle diameter, and the spraying distance for gravity pneumatic spraying gun.

Słowa kluczowe

EN

lost wax technology; moulding materials; fibre reinforcement; suspension

PL

materiał formierski; zawiesina; gęstwa ceramiczna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 2
• Strony: 107--110
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Nadolski M.

autor

Konopka Z.

autor

Łągiewka M.

autor

Zyska A.

• Department of Foundry, Technical University of Częstochowa, 42-200 Częstochowa, ul. Armii Krajowej 19,

Bibliografia

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• [3] R. Haratym, A. Karwiński, The influence of selected parameters of technological process on strength and permeability of ceramic moulds built in lost wax technology (in Polish), Acta Metallurgica Slovaca, vol. 8 (2002) 395-399.
• [4] D. J. Duffey, R. D. Shaw, Investment Casting, US Pat. 755237 (2004)
• [5] M. Guerra, Fast processing water based binder system, US Pat 5629369 (1997).
• [6] M. Guerra,Fast processing water based binder system, US Pat 6020415 (2000).
• [7] A. T. Bozzo, Surfactants, Wetting and Foams, Remet Corp., (1989).
• [8] A. Ghosh, Ceramic shell mold provided with reinforcement, and related processes, US Pat. 6431255.
• [9] K. S. Preedy, F.H. Simpson, Fiber reinforced ceramic matrix laminate, USPat. 5376598 (1994).
• [10] J. Gawroński, T. Wojarski, Modern technologies of artistic casting production (in Polish), Acta Metallurgica Slovaca, vol. 7 No. 1/2 (2001) 291-303.
• [11] R. S. Doles, Method of increasing the strength and solids level of investment casting shells, US Pat 6540013 (2003).