Paper published in a book (Scientific congresses and symposiums)
RECENT TRENDS IN HOT STRIP ROUGHING MILLS: HIGH CHROMIUM STEEL VERSUS SEMI-HSS
Lecomte-Beckers, Jacqueline; Tchuindjang, Jérôme Tchoufack; Sinnaeve, Mario et al.
2010In Procceedings of the 47th Rolling Seminar - Processes, Rolled and Coated Products
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Keywords :
Hot strip mill; Roughing stands; Work rolls; High chromium steel; Semi-high speed steel; LiMaRC - Liège Materials Research Center
Abstract :
[en] compared. The first grade known as High Chromium Steel (HCS) is presently the most widely used alloy for such an application, while the second one known as semi-High Speed Steel (semi-HSS) is the new grade developed to improve the overall performance of the work roll in the roughing stands of the HSM. In the present paper, the new semi-HSS grade is studied starting from three chemical compositions closed one to another, the variation in the alloying elements is intended to assess, on one hand the effect of a small increase of the carbon content, and on the other hand the influence of the addition of a strong MC carbide forming element. Furthermore, corrosion behavior and performances of the work rolls in service are compared. Various techniques are used in order to characterize both grades, such as Differential Thermal Analysis (to determine phase transformations temperatures, the crystallization behavior and the interval of solidification), hardness measurements, optical microscopy, scanning electron microscopy associated with energy dispersive X ray spectroscopy (to determine the nature and the composition of phases, especially matrix and carbides). Finally micro-macro relations between the nature of the microstructure and the properties of High Chromium Steel and semi-HSS rolls grades in service conditions could be established.
Disciplines :
Mechanical engineering
Materials science & engineering
Author, co-author :
Lecomte-Beckers, Jacqueline ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Tchuindjang, Jérôme Tchoufack  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Science des matériaux métalliques
Sinnaeve, Mario
Ernst, Roger
Language :
English
Title :
RECENT TRENDS IN HOT STRIP ROUGHING MILLS: HIGH CHROMIUM STEEL VERSUS SEMI-HSS
Publication date :
October 2010
Event name :
47th Rolling Seminar - Processes, Rolled and Coated Products
Event organizer :
ABM (Brazilian Metallurgical, Materials and Mining Association)
Event date :
octobre 2010
Audience :
International
Main work title :
Procceedings of the 47th Rolling Seminar - Processes, Rolled and Coated Products
ISBN/EAN :
1983-4764
Pages :
689-702
Peer reviewed :
Peer reviewed
Available on ORBi :
since 12 July 2011

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