Evaluation of the heat transfer coefficient at the metal-mould interface during flow

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

Abstrakty

EN

Calculation results concerning the heat transfer coefficient at the metal-mould interface during flow of the AlMg10 alloy in the channel-like cavity of the spiral castability test mould. The experimental cooling curve as well as changes of metal flow velocity have been determined on the basis of the measured metal temperature during flow. The cooling curve equation for the examined alloy, derived from the heat balance condition in a casting-mould system and taking into account experimental data concerning changes in metal temperature and its flow velocity, has enabled evaluation of the heat transfer coefficient at a chosen point of a metal stream along the mould channel. Graphic representations of changes of this coefficient against time and the channel length have been shown.

Słowa kluczowe

EN

heat exchange; heat transfer coefficient; thermal analysis

PL

wymiana ciepła; współczynnik wymiany ciepła; stop aluminium; analiza termiczna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2007
• Tom: Vol. 7, iss. 4
• Strony: 101--104
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Konopka Z.

autor

Łągiewka M.

autor

Zyska A.

• Technical University of Częstochowa, Department of Foundry, Armii Krajowej St 19, 42-200 Częstochowa, Poland

Bibliografia

• [1] W. Longa: Solidification of castings. Śląsk 1985, Katowice, (in Polish)
• [2] G.F. Balandin: Principles of theory of castings formation. Maszinostroenie 1979, Moskwa, (in Russian)
• [3] W. Longa: Solidification of castings in metal mould. Śląsk 1978, Katowice, (in Polish)
• [4] J. Braszczyński: Theory of foundry processes PWN 1989, Warszawa, (in Polish)
• [5] M.C. Fleming: Solidification processing. Mc Graw-Hill Book 1973, New York
• [6] S. Wiśniewski, T. Wiśniewski: Heat exchange. WNT 2000, Warszawa, (in Polish)
• [7] B. Mochnacki, J. Suchy: Numerical methods in computations of foundry processes. Polish Foundrymen's Technical Association 1995, Kraków
• [8] R. Puzyrewski, J. Sawicki: Principles of fluid mechanics and hydraulics. PWN 1987, Warszawa, (in Polish)
• [9] J. Zierep: Similarity criteria and modeling principles in fluid mechanics. PWN 1978, Warszawa, (in Polish)
• [10] Z. Konopka, M. Łągiewka: Solidification of AlMg10 alloy during flow in casting mould. Hutnik 6 (2006) 285-289.