Possibilities for Using New Types of Additive Materials for Hardfacing

Abstract:

The paper presents the results of the research aimed at quality determination of cladding layers for renovation of the rollers during continuous casting of steel. Four newly designed additive materials in the form of filled tubular wires of diameter 2.4 mm were evaluated. Additive materials were experimentally designed for the renovation of support rollers of the hot rolling mill. The cladding layers were applied on 31CrMoV9 material (EN 10085). Method used in experimed was submarged cladding 121 - EN ISO 4063 SAW. A specially developed flux WLDC 17 was used. The structure of cladding layers, basic mechanical propertis and their chemical composition were determined. The JOEL JSM-7000F electron microscope was used for analysis. Layers were tested under tribological conditions with pin-on-disc adhesion wear. Tests were performed on a Bruker UMT 3 device. Observation and measurement of wear traces were performed on the Sensofar PLu Neox confocal microscope.

• Periodical: Defect and Diffusion Forum (Volume 405)
• Pages: 171-178
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.405.171
• Online since: November 2020
• Authors: Jakub Brezina*, Janette Brezinová, Ján Viňáš
• Keywords: Continuous Casting of Steel, Renovations, Submerged Cladding, Support Rollers

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