Modeling of mould cavity filling process with cast iron in Lost Foam method Part 3. Mathematical model – pressure inside the gas gap

• Autorzy: Pacyniak T. , Kaczorowski R.
• Języki publikacji: EN

Abstrakty

EN

In this work mathematical model describing changes of pressure inside the gas gap was shown during manufacturing gray cast iron castings with use of lost foam process. Authors analyzed the results of numerical simulation enclosing influence of foamed polystyrene pattern density, permeability and thickness of refractory coating on pressure changes in the gap. Studies have shown, that all these parameters have significant influence on pressure inside the gas gap.

Słowa kluczowe

EN

metal casting; Lost Foam process; foamed polystyrene pattern

PL

odlewnictwo metali; technologia pełnej formy

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 3s
• Strony: 79--83
• Opis fizyczny: Bibliogr. 9 poz., wykr.

Twórcy

autor

Pacyniak T.

• Technical University of Lodz, Department of Materials Technology and Production Systems, Stefanowskiego 1/15, 90-924 Łódź, Poland

autor

Kaczorowski R.

• Technical University of Lodz, Department of Materials Technology and Production Systems, Stefanowskiego 1/15, 90-924 Łódź, Poland

Bibliografia

• [1] Lessiter M. J.: “Today's lost foam technology differs from yesteryear”, Modern Casting 87 (1997) s. 32-35.
• [2] Lessiter M.J.: „Expendable Pattern Casting – State of the process”, Modern Casting 84 (1994) s. 36-38.
• [3] Pacyniak T.: Theoretical and technological fundamentals of casting manufacturing with use of lost foam process, Zeszyty Naukowe Nr 985 Politechnika Łódzka 2006 (in Polish).
• [4] Барбакадзе А., Хопф В., Бает Ю.: „Пористость алюминиевых отливок при литье сверху по газифицируемым моделям”, Литейное Производство 2001 No 7.
• [5] Rossi M., Camino G., Luda M. P.: „Characterisation of smoke in expanded polystyrene combustion”, Polymer Degradation and Stability 74 (2001) 507–512.
• [6] Shivkumar S., Gallois B.: „Physico-chemical aspects of the full mold casting of aluminum alloys, part II: metal flow in simple patterns”, AFS Trans. 95 (1987) 801–812.
• [7] Żółkiewicz Z., Jankowski W.: „ Temperature influence on gas emission in lost foam”, II Conference „Tendencje rozwojowe w mechanizacji procesów odlewniczych”, Kraków 25-26.11.1999, s. 169-174 (in Polish).
• [8] Szreniawski J.: „Sand moulds”, WNT Warszawa (1968), (in Polish).
• [9] Pacyniak T., Kaczorowski R.: „ Pressure of gas in gas gap during Lost Foam Process”, Archives of Foundry Engineering, Vol. 7, (4/2007), s.137-140.