Title: Dry sliding wear behaviour of cast roller materials

Authors: Onur Birbaşar; Enbiya Türedi; Ş. Hakan Atapek; Muzaffer Zeren

Addresses: Faculty of Engineering, Department of Metallurgical and Materials Engineering, Kocaeli University, Umuttepe Campus, 41380 Kocaeli, Turkey; Assan Aluminium, 34940 Tuzla-Istanbul, Turkey ' Faculty of Engineering, Department of Metallurgical and Materials Engineering, Kocaeli University, Umuttepe Campus, 41380 Kocaeli, Turkey ' Faculty of Engineering, Department of Metallurgical and Materials Engineering, Kocaeli University, Umuttepe Campus, 41380 Kocaeli, Turkey ' Faculty of Engineering, Department of Metallurgical and Materials Engineering, Kocaeli University, Umuttepe Campus, 41380 Kocaeli, Turkey

Abstract: In this study, wear behaviour of roller materials produced by different casting techniques was investigated. Static and centrifugal casting techniques were used to produce roller materials having pearlitic and martensitic matrices due to the processing method and alloy composition. The roller materials were examined using light and scanning electron microscopes to determine the matrix phase. The samples were tested using 'ball-on-disc' type tribometer to study the wear characteristics of cast morphologies. DIN 100Cr6 steel ball with a 5 mm diameter was used as counterface, load force was selected as 50 N and total sliding distance was 500 m. After wear tests, the surfaces of cast parts were examined by light and scanning electron microscopes to evaluate the wear mechanisms under dry sliding condition. The friction coefficient, weight loss and type of wear mechanisms were determined. It was concluded that the material having finer martensitic matrix produced by centrifugal casting had a higher wear resistance than the one produced by static casting.

Keywords: dry sliding wear; wear behaviour; abrasion; adhesion; roller materials; friction coefficient; weight loss; wear mechanisms; centrifugal casting; wear resistance; static casting.

DOI: 10.1504/IJSURFSE.2015.068233

International Journal of Surface Science and Engineering, 2015 Vol.9 No.2/3, pp.253 - 263

Received: 19 Sep 2013
Accepted: 06 Mar 2014

Published online: 26 Mar 2015 *

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