Descaling by Pulsating Water Jet
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F11%3APU87018" target="_blank" >RIV/00216305:26210/11:PU87018 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26210/10:PU87018
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Descaling by Pulsating Water Jet
Original language description
Descaling is the process when scales are removed by water jet. In Academy of science in Ostrava, they have patented device called pulsator which can add to the water some extra energy in the form of high-frequency pressure pulses which disintegrate flat water jet. This paper deals with a new study of removing scales using pulsations and its comparison with descaling process without pulsating water jet. There are two main factors the thermal shock and the impact pressure applied by the impinging water onto the surface. During cold rolling is important only impact pressure. The descaling by pulsating water jet was also tested on the sheets generally used during cold rolling, because pulses create very short pressure peaks in the impact area higher than 300 MPa. While during the descaling without pulses is impact pressure approximately 1 - 5 MPa. Heat transfer and descaling tests were performed on carbon steel plate and steel sheet with a high percentage of silicon. Just these scales are very difficult for removing from the surface. It was found out that the pulsations have influence on the heat transfer and removing scales from the hot surfaces of steel. Tests for descaling on the cold sheets showed that the scale layer is thinner for the case of pulsating water jet with comparison to the scale thickness after descaling by the non pulsating water jet.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
METAL 2010, 19th International Conference on metallurgy and Materials
ISBN
978-80-87294-17-8
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
43-48
Publisher name
Tanger spol. s r.o.
Place of publication
Rožnov pod Radhoštěm
Event location
Rožnov pod Radhočtěm
Event date
May 18, 2010
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000286658700034