Analysis of industrial conditions during multi-stage cooling of C70D high-carbon steel wire rod

Konrad Laber; Henryk Dyja; Bartosz Koczurkiewicz

doi:10.3139/120.110717

Article

Analysis of industrial conditions during multi-stage cooling of C70D high-carbon steel wire rod

Konrad Laber , Henryk Dyja and Bartosz Koczurkiewicz

Published/Copyright: March 27, 2015

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From the journal Materials Testing Volume 57 Issue 4

Abstract

An analysis of the parameters of multi-stage controlled strip cooling during the process of rolling of 5.5 mm-diameter C70D high-carbon steel wire rod has been made in this publication. Investigations included also the analysis of the flow rate of the cooling medium and its pressure in the devices for accelerated and controlled cooling of the strip directly in the rolling line, as well as in the STELMOR line. The investigations carried out within the study have determined the cooling capacity of the accelerated strip cooling devices for specific (preset) cooling conditions. The scope of the investigations also encompassed the analysis of the effect of the employed cooling conditions on the temperature distribution and on the properties and microstructure of the steel studied. Moreover, physical modeling of the currently applicable technology of rolling the investigated steel grade was also performed.

Kurzfassung

Für den vorliegenden Beitrag wurde eine Analyse der Parameter während der multistationären kontrollierten Bandstreifenabkühlung während des Walzens eines 5,5 mm dicken kohlenstoffreichen C70D Walzdrahtes durchgeführt. Die Untersuchungen schlossen auch die Analyse der Durchflussgeschwindigkeit und des Druckes des Kühlmediums in den Anlagen für eine beschleunigte und kontrollierte Kühlung der Bandstreifen direkt in der Walzstraße sowie in der STELMOR-Linie ein. Die Untersuchungen der Studie führten dazu, dass die Kühlkapazität der Anlagen für die beschleunigte Abkühlung für die (vorbestimmten) Abkühlungsbedingungen festgelegt werden konnten. Außerdem wurden auch die angewandten Kühlbedingungen auf die Temperaturverteilung sowie die Eigenschaften und die Mikrostruktur des untersuchten Stahles analysiert. Darüber hinaus wurde auch ein physikalisches Modell der derzeitig anwendbaren Technik für das Walzen des untersuchten Stahltyps durchgeführt.

§Correspondence Address, Ass. Prof. Dr. Konrad Laber, Institute of Plastic Working and Safety Engineering, Faculty of Production Engineering and Materials Technology, Czestochowa University of Technology, Al. Armii Krajowej 19, 42-200 Czestochowa, Poland, E-mail: laber@wip.pcz.pl

Dr. Eng. Konrad Laber, born in 1977, graduated from Czestochowa University of Technology, Department of Metallurgy and Materials Engineering, Poland, in 2001. He is specialized in Computer Science in Manufacturing Processes as well as in Organization and Management in the Metallurgical Industry (2002). He deepened his professional understanding of the field with practical industrial experience gained at CMC Zawiercie Iron works, Poland. He also worked in the Bar Rolling-Mill Department as an operator of rolling-mill equipment. In 2008, he obtained his PhD in Technical Sciences in the field of metallurgy at Czestochowa University of Technology, Faculty of Process and Materials Engineering and Applied Physics, Poland. Currently, he is working as Assistant Professor at Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Institute of Plastic Working and Safety Engineering, Poland. His main research fields are rolling processes of long products and wire rods, research of mechanical and rheological properties of the materials and thermovision research.

Prof. Henryk Dyja, born in 1946, graduated in the Department of Metallurgy at Czestochowa University of Technology, Poland in 1971. In 1977, he obtained his PhD in Technical Sciences in the field of metallurgy at the AGH Mining and Metallurgical Academy, Krakow, Poland. In 1990, he finished his habilitation at Czestochowa University of Technology, Department of Metallurgy. In 1998, he obtained his Professor title. From 2002 to 2005, he was Rector of Czestochowa University of Technology. He has a Doctor Honoris Causa Production-Oriented Testing from Czestochowa University of Technology, the National Metallurgical Academy of the Ukraine in Dniepropetrovsk as well as from the Institute of Steel and Alloys in Moscow, Russia. He is also a member of many international scientific organizations. Currently, he is working as Professor at Czestochowa University of Technology in the Faculty of Production Engineering and Materials Technology. He is Director of the Institute of Plastic Working and Safety Engineering. His main research fields are metallurgy, materials engineering as well as new technologies in production processes.

Dr. Eng. Bartosz Koczurkiewicz, born in 1974, graduated from Czestochowa University of Technology, Department of Metallurgy and Materials Engineering, Poland, in 1999 with a specialization in plastic working. In 2005, he obtained his PhD in Technical Sciences in the field of metallurgy at Czestochowa University of Technology, Faculty of Process and Materials Engineering and Applied Physics, Poland. Currently, he is working as Assistant Professor at the same university in the, Faculty of Production Engineering and Materials Technology, Institute of Plastic Working and Safety Engineering. His main research field is modeling of microstructure and properties of different materials.

References

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Published Online: 2015-03-27

Published in Print: 2015-04-01

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https://doi.org/10.3139/120.110717