Evaluation of the quality of cladding deposited on continuous steel casting rolls

Ján Viňáš; Janette Brezinová; Anna Guzanová; Peter Balog

doi:10.3139/146.110842

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Evaluation of the quality of cladding deposited on continuous steel casting rolls

Ján Viňáš , Janette Brezinová , Anna Guzanová und Peter Balog

Veröffentlicht/Copyright: 17. August 2013

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Aus der Zeitschrift International Journal of Materials Research Band 104 Heft 2

Abstract

This paper presents the quality analysis of cladding layers deposited on continuous steel casting rolls made of 41CrMo4 (EN 10083-1-91). The effect of filler used on the tribological properties of claddings was analyzed. There was minimal mixing between the base material and interlayer observed in the process of hard surfacing. The microstructure of the interlayer and the coatings is martensite–ferrite. Dispersed carbides MC, M₇C₃, and Cr₂₃C₆ were observed in the interlayer. Small amounts of carbides were also observed in the cover layer along with Cr₂N and CrN, which was confirmed by energy dispersive X-ray analysis. The highest average hardness, 410 HV30, was measured in the cover layer at a distance of 1 mm from the surface. The lowest hardness was found in the base material, 239 to 243 HV30. The hardness of the interlayer metal is affected by mixing of cladding and cover layer metal. The cladding metal showed a martensite–ferrite structure and fine precipitates in the interlayer, and diffraction spectra of the carbides had the characteristics of MC, M₇C₃, and Cr₂₃C₆ carbides. Lower abrasive wear has been reported in the reference material (a roll with a surface-hardened layer), which is in line with the contact surface hardness of test samples.

Keywords: Wear; Renovation; Cladding; Submerged arc welding (SAW)

* Correspondence address, Anna Guzanová Mäsiarska 74, 040 22 Košice, Slovakia, Tel.: +421 55 602 3512, Fax: +421 55 622 5186, E-mail: anna.guzanova@tuke.sk

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Received: 2010-12-2

Accepted: 2012-7-16

Published Online: 2013-08-17

Published in Print: 2013-02-15

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Artikel in diesem Heft

https://doi.org/10.3139/146.110842

Schlagwörter für diesen Artikel

Wear; Renovation; Cladding; Submerged arc welding (SAW)