A numerical optimization of heat transfer in a system a plate casting - mold - surroundings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU128927" target="_blank" >RIV/00216305:26210/18:PU128927 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

A numerical optimization of heat transfer in a system a plate casting - mold - surroundings

Popis výsledku v původním jazyce

The solidification and cooling of a casting, and the simultaneous heating of the mold is described by the Fourier equation. An original three-dimensional (3D) numerical model of the temperature field of a system, comprising a plate casting, the mold and the surroundings, had been assembled and used to optimize the production technology of a vertically cast steel plate. The accuracy of a numerical model depends not only on the spatial and temporal discretization, but also on the accuracy with which the thermophysical properties of all materials entering the system are determined. The temperature field of this plate was analyzed with different angles of widening in its cross-section (in the range 0° to 4.4°). From the slanted side, the plate was either insulated or uninsulated. Plastizol was used as the insulator. An uninsulated plate has a calculated optimum angular widening of 3°. A widening of 2° is the minimum angle from which internal defects (e.g. shrinkage cavities) begin to disappear. The insulated plate has an optimum angle of widening of 2°. Using calculations, it is possible to predict that the plate itself will have the same internal quality with a widening of 3° after crystallization without insulation, as a 2° widening has with insulation. The knowledge gained in this study can lead to the reduction of the volume of liquid metal used, and also to the lowering of machining costs.

Název v anglickém jazyce

A numerical optimization of heat transfer in a system a plate casting - mold - surroundings

Popis výsledku anglicky

The solidification and cooling of a casting, and the simultaneous heating of the mold is described by the Fourier equation. An original three-dimensional (3D) numerical model of the temperature field of a system, comprising a plate casting, the mold and the surroundings, had been assembled and used to optimize the production technology of a vertically cast steel plate. The accuracy of a numerical model depends not only on the spatial and temporal discretization, but also on the accuracy with which the thermophysical properties of all materials entering the system are determined. The temperature field of this plate was analyzed with different angles of widening in its cross-section (in the range 0° to 4.4°). From the slanted side, the plate was either insulated or uninsulated. Plastizol was used as the insulator. An uninsulated plate has a calculated optimum angular widening of 3°. A widening of 2° is the minimum angle from which internal defects (e.g. shrinkage cavities) begin to disappear. The insulated plate has an optimum angle of widening of 2°. Using calculations, it is possible to predict that the plate itself will have the same internal quality with a widening of 3° after crystallization without insulation, as a 2° widening has with insulation. The knowledge gained in this study can lead to the reduction of the volume of liquid metal used, and also to the lowering of machining costs.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Sborník přednášek XXIII. celosttní konference Výrova a vlastnosti oceli na odlitky a litiny

ISBN

978-80-02-02818-5

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

76-84

Název nakladatele

Česká slévárenská společnost

Místo vydání

Divadelní 6, 657 34 Brno

Místo konání akce

Svratka

Datum konání akce

5. 9. 2018

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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