Theoretical and Experimental Analysis of the Cooling Ability of Device for the Plain Round Bars Accelerated Cooling Process

Abstract:

The paper presents the results of the numerical modelling and industrial research of the cooling ability of the device for the round plain bars accelerated cooling process. Research were carried out for one of the bar rolling mill technological conditions in a few variants. The paper purpose was determination of the cooling ability of device for accelerated cooling process to checking possibility of the using this device in the rolling line, during normalizing rolling process. Investigation results elaborated in the paper made the basis for determination of the heat exchange coefficients between cooled band and water. In the next stage of this paper numerical modeling of the normalizing rolling process with accelerated cooling of band in the final stage of the rolling process was carried out. In this investigation heat exchange coefficients between band and cooling medium (water), which were determinated with allowance of cooling possibilities of investigated device for band accelerated cooling were used. From the obtained results it was found that in the analysed bar rolling mill it is possible to decrease the band average temperature to about 900 °C, which is required during the normalizing rolling process.

• Periodical: Materials Science Forum (Volumes 706-709)
• Pages: 2090-2095
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.706-709.2090
• Online since: January 2012
• Authors: Konrad Błażej Laber, Henryk Dyja, Marcin Kwapisz
• Keywords: Accelerated Cooling, Bars Normalizing Rolling Process, Numerical Modeling, S355J2G3 Constructional Steel, Thermovision Investigation

References

[1] Laber K., Dyja H.: Zastosowanie techniki termowizyjnej do badania zdolności chłodzącej urządzenia do przyspieszonego chłodzenia prętów okrągłych gładkich (The application of the thermovision technique for the study of the cooling capability of the plain round bar accelerated cooling device). Proceedings of the 18th International Scientific & Technical Conference on Production and Management in Metallurgy", 01-03. 07. 2010. Zakopane, The "Hutnik -Wiadomości Hutnicze, Journal, No. 9/2010, HUTNAD 77 (5) 441-564 (2010).

[2] Laber K.: Modelowanie i optymalizacja procesów regulowanego walcowania i kontrolowanego chłodzenia wyrobów walcowni bruzdowych (Modelling and optimization of the processes of controlled rolling and controlled cooling of shape rolling mill products), a Doctoral Thesis, Czestochowa 2008, p.8.

[3] Kajzer S., Kozik R., Wusatowski R.: Wybrane zagadnienia z procesów obróbki plastycznej metali. Projektowanie technologii (Selected problems of metals plastic working processes. The design of technologies). The Publishing House of the Silesian University of Technology, ISBN 83-85718-72-9, Gliwice 1997, p.63.

[4] FORGE3® Reference Guide Release 6. 2. Sophia-Antipolis, November (2002).

[5] Danchenko V., Dyja H., Lesik L., Mashkin L., Milenin A.: Technologia i modelowanie procesów walcowania w wykrojach (The technology and modelling of grooved rolling processes), Czestochowa University of Technology, Teaching Publications of the Faculty of Process & Materials Engineering and Applied Physics, Series: Metallurgy No. 28, The Publishing House of the Faculty of Process & Materials Engineering and Applied Physics, ISBN 83-87745-66-9, Czestochowa 2002, p.530.

DOI: 10.32730/imz.2657-747.19.1.4

[6] Polish Standard PN-EN 10025: Hot rolled products of unalloyed constructional steels. The technical specifications of delivery. The Polish Standardization Committee, ISBN 83-243-0390-1, 2002, p.6, 18÷23, 33.

[7] Kajzer S., Kozik R., Wusatowski R.: Walcowanie wyrobów długich. Technologie walcownicze (Rolling of long products. Rolling technologies), The Publishing House of the Silesian University of Technology, ISBN 83-7335-236-8, Gliwice 2004, p.77.

[8] Pietrzyk M.: Metody numeryczne w przeróbce plastycznej metali (Numerical methods in the plastic working of metals), Skrypty Uczelniane No. 1303, Edition 1, The AGH Publishers, PL ISSN 0239-6114, Krakow 1992, p.156÷157.

[9] Mróz S.: Modelowanie walcowania prętów żebrowanych otrzymanych metodą wzdłużnego rozdzielania pasma (Modelling of the rolling of ribbed bars obtained by the longitudinal strip separation method). Proceedings of the Conference on Physical and Mathematical Modelling of Plastic Working Processes, Warsaw 20-21. 05. 2005, Scientific Works – Mechanics, Vol. 207, The Publishing House of the Warsaw University of Technology, ISSN 0137-2335, Warsaw 2005, p.66.