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Warianty tytułu
Języki publikacji
Abstrakty
The paper presents the effect of suction pressure exerted on the liquid AlSi alloy when it is introduced into a ceramic mould made in the investment process and the results compared with data obtained on gravity poured castings. The study used special pattern sets and ceramic moulds made with the alternately applied soluble silicate binder and ethyl silicate. Additionally, self-supported moulds based entirely on the Ekosil binder were used. In the analysis of castings, the following parameters were examined: a linear dimensional accuracy, the state of surface microgeometry and the possibility of metal penetration into a complex ceramic mould, allowing also for the presence of capillary phenomena. In the process of casting with back-pressure, the pressure values of 500 hPa, 600 hPa and 700 hPa were applied in the chamber where the ceramic mould was located, with the temperature of the said mould kept at a level of 150±10ºC.
Czasopismo
Rocznik
Tom
Strony
73--76
Opis fizyczny
Bibliogr. 9 poz., rys., wykr.
Twórcy
autor
- Foundry Research Institute, Zakopiańska 73, 30-418 Kraków, Poland
autor
- University of Ecology and Management, Wawelska 14, 02-061 Warszawa, Poland
autor
- Warsaw University of Technology, Institute of Manufacturing Technology, Narbutta 85, 02-524 Warszawa, Poland
Bibliografia
- [1] R. L. Sharkey, G. D. Chandley, La coulee CLA des alliages non ferreax, Founderie, 10/1980.
- [2] J. Taylor, The CLA process for thin – wall castings, Foundry Fokus, Int. Foundry and Forge Development, Spring 1989.
- [3] A. T. Spada, Hitchiner Manufacturing Co. – Turning the casting world upside down from Modern Casting, July 1998.
- [4] D. Chandley, Counter gravity Low – Pressure Casting, ASM Int., Vol. 15, 1992.
- [5] M. Perzyk, S. Waszkiewicz, A. Jopkiewicz, M. Kaczorowski, Odlewnictwo, WNT, Warszawa, 2004.
- [6] R. Haratym, Anizotropia właściwości form ceramicznych w aspekcie dokładności odlewów wytworzonych w procesie z przeciwciśnieniem, Archiwum Odlewnictwa, nr 15/2005.
- [7] D. Myszka, R. Haratym, Quality of investment casting made in counterback process, Acta Metallurgica Slovaca Košice, 3/2001; Ročník 7.
- [8] M. Szweycer, Zjawiska powierzchniowe w procesach odlewniczych, Wyd. Instytutu Odlewnictwa, Kraków 1996.
- [9] R. Haratym, J. Senkara, D. Sankowski, Oddziaływanie ciekłych stopów aluminku z powierzchnią form ceramicznych na spoiwach krzemianowych, Komitet Budowy Maszyn Polskiej Akademii Nauk, Oddział w Poznaniu, Wyd. Politechniki Poznańskiej, 2001.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-a8ae0a73-3ff2-403f-840b-402414b8f829