Influence of reaction chamber shape on cast-iron spheroidization process in-mold

• Autorzy: Pietrowski S.
• Języki publikacji: EN

Abstrakty

EN

This paper presents a results concerning the influence of reaction chamber shape on cast - iron spheroidization process in form. The volume of the tested reaction chambers was about 118000mm3. Reaction chambers in the shape of: rectangular, cylinder and spherical cap were examined. It has been shown that the best graphite spheroidizing process was provided by spherical cap chamber shape. The reaction of cast – iron with magnesium in reaction chamber depends on the flow of cast - iron in the chamber. In rectangular and cylinder shape chambers proceed the impact of diphase stream on flat bottom wall. It causes the creation on its surface film, called: cast – iron "film", where single grains of magnesium master alloy exist. The largest part of master alloy is drifted by liquid cast – iron to the top and only there graphite spheroidization process proceed. In the spherical cap shape reaction chamber, as a result of rotation movement of liquid cast – iron throughout its volume, graphite spheroidization process proceed. Apart from the reaction chamber shape, applying of mixing chamber ensure full cast - iron spheroidization process.

Słowa kluczowe

EN

innovative foundry technologies; innovative foundry materials; Inmold method; reaction chamber; microstructure

PL

innowacyjne technologie odlewnicze; innowacyjne materiały odlewnicze; metoda in mold; mikrostruktura

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 1
• Strony: 115--122
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Pietrowski S.

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

Bibliografia

• [1] Sorelmetal Rio Tinto Iron & Titanium, 2006.
• [2] D.M. Stefanescu, R.C. Rao, J.W. Woolen, F.R. Juretzko, J.W. Torrance: Production of Thin-Wall Low-Nodurality Ductile Iron Trough the Delayed In-Mold Procesas. AFS Transactions, 2005, Vol. 110, s. 1-10.
• [3] R. Sillen: The PQ-CGI In-Mold Process, http://www.ialonso.com/software/pqcgi.htm.
• [4] Biuletyn Metals & Minerals, Technologie, 1/2001.
• [5] E. Guzik: Procesy uszlachetniania żeliwa. Wybrane zagadnienia. Archives of Foundry. Monografia Nr 1, 2001.
• [6] K.G. Davis i In.: Dissolution of MgFeSi alloy during inmold treatment, AFS Transactions, 1978, s. 379-384.
• [7] C.E. Dremann: New alloys for making ductile iron in the mold. AFS Transactions, 1983, s. 263-268.
• [8] Ductile Iron – Molten Metal Processing, 2nd edition, American Foundrymen`s Society Publication, Des Plaines, IL, 1986.
• [9] H. Heine: Comparing seven methods for producing ductile iron, Foundry Management & Technology, August, 1987.
• [10] R. Steel: The use of the Flotret process for the production of large castings. BCIRA Conference – S.G. Iron The Next 40 Years, Warwick, UK, 1987.
• [11] T. Bex: Ductile iron: one of the century`s metallurgical triumphs. Modern Casting, February, 1991.
• [12] J. Rotella, R. Mickelson: Using cored wire in the production of ductile iron, AFS Transactions, 1991.
• [13] S. Pietrowski, C. Rapiejko: Nodular cast iron and casting monitoring. Archives of Foundry Engineering, Vol. 8, Issue 3, July-September 2008, s. 181-184.
• [14] Projekt Celowy Nr ROW-II-363/2008 – Kierownik Projektu: prof. dr hab. inż. Stanisław Pietrowski, 2008.
• [15] S. Pietrowski: Control of cast iron and casts manufacturing by Inmold method. Archives of Foundry Engineering, Vol. 8, Issue 3, July-September 2009, s. 133-142.