THE INFLUENCE OF COOLING CONDITIONS ON PEARLTE MORPHOLOGY OF HIGH CARBON WIRE RODS

1 KOCZURKIEWICZ Bartosz
Co-authors:
1 DYJA Henryk 2 NIEWIELSKI Grzegorz
Institutions:
1 Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Czestochowa, Poland, EU
2 Silesian University of Technology , Faculty of Materials Engineering and Metallugy, Katowice, Poland, EU
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
699-703
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
283 views / 120 downloads
Abstract

The high carbon steel rods are designed for the manufacture of wire on the rope and steel cords. They are produced in continuous rolling mills with accelerated cooling device. High carbon wire rods should have a uniform pearlitic structure at cross section and a longitudinal which guarantees high tensile strength and relatively good plasticity. In practice rolled high carbon steel rods (0.40 ÷ 0.94 %C) should have a uniform pearlite structure with uniformly distributed cementite plates having a thickness of 0.02 ÷ 0.04 μm and the distances between the plates at 0.1 ÷ 0.2 μm. That type of pearlitic structure should ensure good plasticity [1]. The paper presents results of research on the influence of cooling conditions of high carbon wire rods (C70D and C46D according EN 10016-2) on the morphology of pearlite. For thermo-plastic treatment a deformation dilatometer DIL 805A / D were used. The samples after deformations were cooled to temperature to obtain pearlitic structure. The metallographic analysis of samples were done and morphologies perlite were determined. As a result of the research was to describe the dependence of the distance inter plates (Lm) as a function of the cooling rate after deformation. It will be used to the design high carbon wire rods cooling technology with high level of plasticity after rolling processes.

Keywords: High carbon wire rods, pearlitic morphology, distance between cementite plates

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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