Analysis of the Surface Quality of Steel Bars with Use of Approximation Models

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25870807%3A_____%2F16%3AN0000025" target="_blank" >RIV/25870807:_____/16:N0000025 - isvavai.cz</a>
Result on the web
<a href="http://www.hutnickelisty.cz" target="_blank" >http://www.hutnickelisty.cz</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Analysis of the Surface Quality of Steel Bars with Use of Approximation Models
Original language description
The article contains an analysis of the behaviour of the basic indicator of surface quality of bars on the basis of created physically adequate model describing heat and temperature conditions during casting of billets. On the basis of simplified physical interpretation an approximating dynamic cybernetic model was created for the measured surface temperature of cast billets, then from it a mathematical continuous and discrete model was created, and finally a regression model. Since the indicator of the surface quality of bars shows the character of probability of occurrence of the phenomenon, a multiple logistic regression model was used. For verification of appropriateness of the model we selected data from annealing of concrete operational heat of killed steel containing 0.18 wt. % C, 1.32 wt. % Mn and 0.33 wt. % Si at the outer casting strand No. 8 of the continuous casting machine No. 2 at the Trinec Iron and Steel Works, a.s., as well as from rolling of square billets of 150 150 mm to round bars with diameter of 70 mm on the continuous fine section rolling mill.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Project
<a href="/en/project/LO1203" target="_blank" >LO1203: Regional Materials Science and Technology Centre - Feasibility Program</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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