Effect of Cooling of the Ingot on its Macro-structural and Chemical Heterogeneity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A10237330" target="_blank" >RIV/61989100:27360/17:10237330 - 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

Effect of Cooling of the Ingot on its Macro-structural and Chemical Heterogeneity

Popis výsledku v původním jazyce

The company MATERIÁLOVÝ A METALURGICKÝ VÝZKUM s.r.o. (Material and Metallurgical Research, Ltd.) deals with the research project entitled &quot;Technology of Intensive Cooling of Steel Cast into an Ingot Mould.&quot; This project is funded by the programme &quot;Support of Science and Research in the Moravian-Silesian Region 2015.&quot; As part of the project, the technology of intensive cooling of steel cast into moulds has been tested. The project solution was divided into two parts. Two ingots of the same type were cast, where the cast steel was of the identical chemical composition, temperature and casting speed. In both cast ingots, the macro-structural and chemical heterogeneity of cast steel was compared in four zones in one longitudinal axial section and three transverse sections along the height of the ingot. The evaluated macrostructures in the ingot sections show that the effect of intense cooling of cast ingot has significantly manifested itself at the bottom of the ingot with the increased zone of coarse-grained, differently oriented crystals. The analysis of the macro-structure of the cooled and non-cooled ingot further shows that in the bottom part of the cooled ingot the porosity has increased, and on the contrary, the upper part of the ingot has shown a significantly reduced porosity. Another finding is that the intense heat transfer during the ingot casting and solidification has a major effect on reducing the segregation of C, Cr and Mo elements. The calculation of the heat score shows that approximately 20 % of the heat was removed from the cooled ingot compared to the non-cooled ingot. The highest increase in heat output was identified at the bottom of the ingot.

Název v anglickém jazyce

Effect of Cooling of the Ingot on its Macro-structural and Chemical Heterogeneity

Popis výsledku anglicky

The company MATERIÁLOVÝ A METALURGICKÝ VÝZKUM s.r.o. (Material and Metallurgical Research, Ltd.) deals with the research project entitled &quot;Technology of Intensive Cooling of Steel Cast into an Ingot Mould.&quot; This project is funded by the programme &quot;Support of Science and Research in the Moravian-Silesian Region 2015.&quot; As part of the project, the technology of intensive cooling of steel cast into moulds has been tested. The project solution was divided into two parts. Two ingots of the same type were cast, where the cast steel was of the identical chemical composition, temperature and casting speed. In both cast ingots, the macro-structural and chemical heterogeneity of cast steel was compared in four zones in one longitudinal axial section and three transverse sections along the height of the ingot. The evaluated macrostructures in the ingot sections show that the effect of intense cooling of cast ingot has significantly manifested itself at the bottom of the ingot with the increased zone of coarse-grained, differently oriented crystals. The analysis of the macro-structure of the cooled and non-cooled ingot further shows that in the bottom part of the cooled ingot the porosity has increased, and on the contrary, the upper part of the ingot has shown a significantly reduced porosity. Another finding is that the intense heat transfer during the ingot casting and solidification has a major effect on reducing the segregation of C, Cr and Mo elements. The calculation of the heat score shows that approximately 20 % of the heat was removed from the cooled ingot compared to the non-cooled ingot. The highest increase in heat output was identified at the bottom of the ingot.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Hutnické listy

ISSN

0018-8069

e-ISSN

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Svazek periodika

70

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

47-57

Kód UT WoS článku

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EID výsledku v databázi Scopus

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