THE COOLING PROCESS IN SPRAY OVERLAP DURING HYDRAULIC DESCALING

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU128006" target="_blank" >RIV/00216305:26210/18:PU128006 - 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

THE COOLING PROCESS IN SPRAY OVERLAP DURING HYDRAULIC DESCALING

Popis výsledku v původním jazyce

The manufacturing of high quality steels is connected to high temperatures at which the material reacts with the surrounding atmosphere. A layer of iron oxides (scales) is formed on the surface of the steel. To ensure a high quality product, the layer must be removed prior to any metal forming operation. The mass production of steel requires a quick and effective method of descaling. In the overwhelming majority of cases, the descaling is performed by high pressure flat jet water nozzles placed in a row. This article builds on the previous texts on the process optimization and further studies the effect of the offset angle of the nozzles on the uniformity of the cooling impulse on the surface of the hot rolled steel strip. Current research has brought a significant improvement in the area of measurement of the heat transfer coefficient. The article compares two configurations of nozzles and presents the impact pressure measurements and corresponding heat transfer coefficient measurements for both of them. The results obtained so far show that the commonly used configuration is not optimal from a cooling point of view. The new suggested configuration presents a new method of making the cooling impulse and the cooling rate more uniform along the width of the hot rolled steel strip of the descaled surface.

Název v anglickém jazyce

THE COOLING PROCESS IN SPRAY OVERLAP DURING HYDRAULIC DESCALING

Popis výsledku anglicky

The manufacturing of high quality steels is connected to high temperatures at which the material reacts with the surrounding atmosphere. A layer of iron oxides (scales) is formed on the surface of the steel. To ensure a high quality product, the layer must be removed prior to any metal forming operation. The mass production of steel requires a quick and effective method of descaling. In the overwhelming majority of cases, the descaling is performed by high pressure flat jet water nozzles placed in a row. This article builds on the previous texts on the process optimization and further studies the effect of the offset angle of the nozzles on the uniformity of the cooling impulse on the surface of the hot rolled steel strip. Current research has brought a significant improvement in the area of measurement of the heat transfer coefficient. The article compares two configurations of nozzles and presents the impact pressure measurements and corresponding heat transfer coefficient measurements for both of them. The results obtained so far show that the commonly used configuration is not optimal from a cooling point of view. The new suggested configuration presents a new method of making the cooling impulse and the cooling rate more uniform along the width of the hot rolled steel strip of the descaled surface.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LO1202" target="_blank" >LO1202: NETME CENTRE PLUS</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Sborník konference METAL 2018

ISBN

978-80-87294-83-3

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

1-6

Název nakladatele

Tanger, Ostrava

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

23. 5. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000461832200077