Structure fields in the solidifying cast iron roll

• Autorzy: Wołczyński W. S. , Guzik E. , Kania B. , Wajda W.
• Języki publikacji: EN

Abstrakty

EN

Some properties of the rolls depend on the ratio of columnar structure area to equiaxed structure area created during roll solidification. The C → E transition is fundamental phenomenon that can be apply to characterize massive cast iron rolls produced by the casting house. As the first step of simulation, a temperature field for solidifying cast iron roll was created. The convection in the liquid is not comprised since in the first approximation, the convection does not influence the studied occurrence of the C → E (columnar to equiaxed grains) transition in the roll. The obtained temperature field allows to study the dynamics of its behavior observed in the middle of the mould thickness. This midpoint of the mould thickness was treated as an operating point for the C → E transition. A full accumulation of the heat in the mould was postulated for the C → E transition. Thus, a plateau at the T(t) curve was observed at the midpoint. [...] A simulation was performed for the cast iron rolls solidifying as if in industrial condition. Since the incubation divides the roll into two zones: C and E; (the first with columnar structure and the second with fully equiaxed structure) some experiments dealing with solidification were made on semi-industrial scale.

Słowa kluczowe

EN

foundry proces; solidifying roll; structure types; temperature gradients field

PL

proces odlewania; walec krystalizujący; pole temperatury

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 1 spec.
• Strony: 41--46
• Opis fizyczny: Bibliogr. 6 poz., rys., wykr.

Twórcy

autor

Wołczyński W. S.

• Instytut Metalurgii i Inżynierii Materiałowej, PAN, ul. Reymonta 25, 30-059 Kraków, Polska

autor

Guzik E.

• Wydział Odlewnictwa, AGH, ul. Reymonta 23, 30-059 Kraków, Polska

autor

Kania B.

• Wydział Fizyki, AGH, ul. Reymonta 19, 30-059 Kraków, Polska

autor

Wajda W.

• Instytut Metalurgii i Inżynierii Materiałowej, PAN, ul. Reymonta 25, 30-059 Kraków, Polska

Bibliografia

• [1] J.D. Hunt, Steady State Columnar and Equiaxed Growth of Dendrites and Eutectics, Materials Science & Engineering, vol. 65 (1984) 75-83.
• [2] A. Ares, C. Schvezov, Solidification Parameters in Columnar -to-Equiaxed Transition in Lead-Tin Alloys, Metallurgical & Materials Transactions, vol. 31A (2000) 1611-1625.
• [3] M. Hamdi, M. Bobadilla, H. Combeau, G. Lesoult, in: Modelling of Casting, Welding and Advanced Solidification Processes VIII, eds B.G.Thomas and Ch.Beckerman. TMS, Warrendale, PA, 1998, 375-382.
• [4] Ch.A. Gandin, From Constrained to Unconstrained Growth in Solidification, Acta Materialia, vol. 48 (2000) 2483-2501.
• [5] ABAQUS Theory Manual, Academic Computer Centre, CYFRONET – AGH University of Science and Technology.
• [6] W. Wołczyński, R. Martynowski, J. Kowalski, W. Wajda, Langer & Muller-Krumbhaar Criterion in the Description of the Liquid Concentration at a Growing Dendrite Tip, Proceedings of the 7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, eds J.S. Szmyd, J. Spałek, T.A. Kowalewski, Chapter: Material Processing, Kraków, 2009, 1913-1920.