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Thermal-fatigue resistant work rolls for hot rolling mills

  • Vyacheslav Goryany , Olga Myronova , Johannes Buch , Alexander Buch and Frank Stein
Published/Copyright: April 30, 2019
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Abstract

Cyclic temperature changes in the working layer of a roll during hot rolling cause thermal stress which leads to damage on the surface layer of the roll due to thermal fatigue. The pre-conditions of crack initiation are described. The intensity of crack propagation could be influenced by optimizing the chemical composition and physical-mechanical properties of the material on the working layer. This reduces the tendency of the material with respect to damage due to thermal fatigue and extends the lifetime of the rolls. The microstructure as well as the operational characteristics of the developed HSS working rolls resistant to thermal fatigue are presented.


Correspondence Address, Dr. Dr. Vyacheslav Goryany, Karl Buch Walzengiesserei GmbH & Co. KG, Auf den Hütten 7, D-57076 Siegen, Germany, E-mail:

Dr. Dr. Vyacheslav Goryany studied at the Institute for Metallurgy in Dnepropetrovsk, Ukraine. In 1987 he received his Doctorate in Material Science as well as in Metallurgy in 1991 and habilitated in 1993. From 2002 to 2010 he worked as a Research Associate at the Institute for Applied Material Science of the University of Duisburg, Germany. Since 2011, he has been Head of Research and Development at Karl Buch Walzengiesserei GmbH & Co. KG in Siegen, Germany.

Dr. Olga Myronova studied at the Institute for Metallurgy in Dnepropetrovsk, Ukraine. In 1988 she earned her Doctorate in Metallography and Heat Treatment of Metals. Since 2002, she has been working as a Research Associate at the Chair of Metal Forming at the University of Duisburg, Germany. Since 2006 she has been the Head of Metallography and Scanning Electron Microscopy.

Johannes Buch, born 1961, graduated in Business Management and Engineering, studied Economics at the Justus-Liebig-University in Gießen and at the University of Siegen, Germany. Subsequently, he studied Foundry and Materials Technologies at the University of Applied Science in Gießen-Friedberg, Germany. In 1986, he joined the Karl Buch Walzengiesserei GmbH & Co. KG in Siegen, Germany, a family-owned company in the fifth generation as Managing Director.

Alexander Buch, born 1989, holds a Master's Degree in Metallurgy and Metal Forming and a Bachelor's Degree in Business Administration, both from the University of Duisburg-Essen, Germany. After completing his studies in 2015 he worked for more than two years as a project manager at Hüttenwerke Krupp Mannesmann in Duisburg, Germany. In 2018 he joined the family-owned company Karl Buch Walzengiesserei GmbH & Co. KG, Siegen, Germany, in its sixth generation as Head of Process Optimization and Corporate Development.

Frank Stein, born 1967, is a Certified Technician of Mechanical Production Technology, and a professional in technical management (CCI). He worked at the ThyssenKrupp Steel AG, Ferndorf + Eichen site, Germany from 1992 to 2000. Since 2000, he has taken on a managing function at Karl Buch Walzengiesserei GmbH & Co. KG, Siegen, Germany. Since 2016, he is responsible for managing sales and production.


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Published Online: 2019-04-30
Published in Print: 2019-05-02

© 2019, Carl Hanser Verlag, München

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