Temperature drop of liquid iron in thin wall channels during mold filling

• Autorzy: Górny M.
• Języki publikacji: EN

Abstrakty

EN

This work deals with first period of metal cooling in mold cavity. It has been performed thermal analysis of flooding metal stream in thin wall ductile iron with the shape of Archimedes spirals. It has been presented comparison of real temperature drop with predictions according to the analytical equations based on heat balance and with simulation using Fluent program. Additionally velocity decrease predicted by Fluent program is compared to the experimental data. Moreover change of cooling rate as function of spiral length of liquid metal before eutectic solidification is presented.

Słowa kluczowe

EN

theoretical basis; casting process; ductile iron; thermal analysis; thin wall castings

PL

podstawy teoretyczne; proces odlewniczy; żeliwo sferoidalne; analiza termiczna; odlewanie cienkościenne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 1
• Strony: 137--142
• Opis fizyczny: Bibliogr. 29 poz., rys., tab., wykr.

Twórcy

autor

Górny M.

• University of Science and Technology, Reymonta 23 Str., 30-059 Kraków, Poland,

Bibliografia

• [1] C. Yeung, H. Zhao, W. B. Lee, The morphology of solidification of thin-section ductile iron castings. Mater. Charact., vol. 40, (1998), 201-208.
• [2] R. E. Ruxanda, D. M. Stefanescu, T. S. Piwonka:, Microstructure Characterization of Ductile Thin Wall Iron Castings. AFS Trans., vol. 110, (2002), 1131-1247.
• [3] O. N. Dogan, K. K. Schrems, J. A. Hawk, Microstructure of thin wall ductile iron castings, AFS Trans., vol. 111, (2003), 949 - 959.
• [4] E. Fraś, M. Górny, Structural gradient in a thin wall casting of ductile iron Arch. Fou. Eng., vol. 7, (2007), 63-68.
• [5] M. Górny: Structure of ductile iron in thin walled castings, Arch. Fou. Eng., vol. 7, (2007), 73-78.
• [6] D. M. Stefanescu, R. E. Ruxanda, Lightweight iron castingscan they replace aluminum castings. Proc.65th W. Fou. Con., Gyengju, Korea, (2002), 71-77.
• [7] D. M. Stefanescu, R. E. Ruxanda, L. P. Dix, The metallurgy and tensile mechanical properties of thin wall spheroidal graphite irons, Int. J. Cast Met. Res., vol. 16, (2003), 319-324.
• [8] F. R. Juretzko, L. P. Dix, R. E. Ruxanda, D. M. Stefanescu, Precondition of ductile iron melts for light weight casting; effect on mechanical properties and microstructure. AFS Trans., Vol. 112, (2004), 773-785.
• [9] J. W. Torrance, D. M. Stefanescu, Investigation on the effect of surface roughness on the static mechanical properties of thinwall ductile iron castings, AFS Trans., vol. 112, (2004), 757-772.
• [10] L. P. Dix, R. E. Ruxanda, J. W. Torrance, M. Fukumoto, D. M. Stefanescu, Static mechanical properties of ferritic and pearlitic lightweight ductile iron castings. AFS Trans., Vol. 111, (2003), 895-910.
• [11] A. Javaid, J. Thomson, K. G. Davis, M. Sahoo, Effect of microstructure on the mechanical properties of thin-wall ductile iron castings. AFS Trans., vol. 109, (2001), 1097-1114.
• [12] A. Javaid, J. Thompson, M. Sahoo, K. G. Davis, Factors Affecting the Formation of Carbides in Thin-wall DI Castings AFS Trans., Vol. 107, (1999), 441-456.
• [13] C. Labrecque, M. Gagne, Production of thin-wall ductile iron castings. Int. J. Cast Met. Res., vol. 16, (2003), 313-318.
• [14] J. F. Cuttino, J. R. Andrews, T. S. Piwonka, Development in thin-wall iron casting technology. AFS Trans., vol. 107, (1999), 363-372.
• [15] F. Mampaey, Z. A. Xu, Mold filling and Solidification of a Thin-Wall Ductile Iron Casting. AFS Transactions., vol. 105, (1998), 95-104.
• [16] M. Górny, Castability of ductile iron in thin walled castings (TWDI). Arch. Fou. Eng. Vol. 8, (2008), 59-64.
• [17] J. H. Choi, J. K. Oh, C. O. Choi, J. K. Kim, P. K. Rohatgi, Effect of Bi Formation of Microstructure and Mechanical Properties of Ductile Iron Castings With Thin-Wall Section AFS Trans., 2004, 112, 831-840.
• [18] R. E. Showman, R. C. Aufderheide, N. P. Yeomas, Using gate extension to produce thin-wall castings. AFS Trans., vol. 114, (2006), 391-399.
• [19] K. M. Pedersen, N. Tiedje: Measur., Temperature measurement during solidification of thin wall ductile cast iron. Part 1: Theory and experiment. Measurement, Vol. 41, (2008), 551-560.
• [20] M. Górny: Thermal analysis of ductile iron in thin walled casting. Arch. Fou. Eng., vol. 7, issue 4, (2007), 69-72.
• [21] B. Mochnacki, J. S. Suchy: Numerical methods in computations of foundry processes, Polish Foundrymen's Technical Association, Kraków, (1995).
• [22] H. Frderikssson, U. Akerlind: ‚Material Processing During Casting',John Wiley & Sons Ltd. Chichester, England (2006).
• [23] W. Kapturkiewicz, A. A. Burbelko, Komputerowe modelowanie zalewania i krzepnięcia spirali lejności. XI Int. Conf. Polish, Chech and Slovak Foundrymens, Zakopane-Kościelisko, Poland, 7-9 April 2005, 103-108.
• [24] K. Ravindran, R. W. Lewis: Finite element model ling of solidification effects In mould filling. Finite Elem. Anal. Des., Vol. 31, (1998), 99-116.
• [25] E. Fras, M. Gorny and H. F. Lopez, Thin-Walled Ductile Iron Castings: Theoretical Background and Experimental Verification. AFS Transactions., Vol. 116, (2008), 577-590.
• [26] W. Longa: 'Solidification of castings' (in Polish). 1985, Ed. Śląsk, Katowice.
• [27] Procast v.2008.0 Database.
• [28] Midea, T.; Shah, J. V. Mold Material Thermophysical Data. AFS Transactions., vol. 110, (2002), 121-136.
• [29] K. M. Pedersen, N. Tiedje, Nucleation and solidification of thin walled ductile iron - Experimental and numerical simulation. Materials Science and Engineering, vol. 413-414 (2005) 358-362.