Chvorinov’s rule and determination of coefficient of heat accumulation of moulds with non-quartz base sands

• Autorzy: Jelinek P. , Elbel T.
• Języki publikacji: EN

Abstrakty

EN

Application of the „Chvorinov’s rule“ for calculation of the total time of casting solidification made also possible to determine chilling effect of foundry moulds (coefficient of heat accumulation of the mould, b_f) with use of mixtures with new kinds of non-quartz base sands (Magnesite, Chromite, Olivine, Dunite, Kerphalit). Processes by several authors (G. Halbart, A. I. Vejnik, G. A. Anisovich) were used for mathematical treatment of measurement results and determination of b_f. The highest values were achieved for magnesite moulds followed by chromite ones; the lowest values, approximately half-ones, represented the Dunite moulds. At the same time the results made possible to determine „the Chvorinov’s mean solidification constants“ (k) that are in direct proportional dependence on bf and indirect proportional to solidification time (τ₁).

Słowa kluczowe

EN

coefficient of heat accumulation; non-quartz base sands; magnesite; chromite; olivine; kerphalit; solidification constants; Chvorinov's mean

PL

współczynnik akumulacji ciepła; non-kwarcowe piaski bazowe; stała krzepnięcia; zasada Chvorinova

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 4
• Strony: 77--82
• Opis fizyczny: Bibliogr. 13 poz., fot., rys., tab.

Twórcy

autor

Jelinek P.

• VŠB – Ostrava University of Technology, FMMI Foundry Department

autor

Elbel T.

• VŠB – Ostrava University of Technology, FMMI Foundry Department

Bibliografia

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• [8] G. Halbart, Éléments dune théorie mathématique de la Fonderie. Liége, 1945.
• [9] G. A. Anisovich, R. N. Grinkevich, Metod opredelenija termofyzičeskich svojstv formovočnych materialov. In Problemy teploobmena pri litje. Minsk, 1960.
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• [12] X. Virolle, R. Chevriot, M. Jeancolas, Étude expérimentale de la diffusivité thermique des matériaux de moulage. Fonderie, 241, mars 1966.
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