ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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10
Issue
vol 63 / OCTOBER, 2020
Article

DOI 10.17586/0021-3454-2020-63-1-78-83

UDC 921.01

EVALUATION OF WEAR RESISTANCE OF MATERIALS ON A FRICTION MACHINE AT DECREASING THE SPECIFIC PRESSURE ON A FLAT SAMPLE

L. V. Efremov
St. Petersburg State Engineering Institute, Department of Abrasive Technologies; Professor


A. V. Tikalov
Peter the Great St. Petersburg Polytechnic University, Department of Mechanical Engineering and Design; Post-Graduate Student


Abstract. A method for estimating the wear resistance of materials on a friction tire is presented. The meth-od is based on the principle of embedding the disk in a flat sample and calculation of wear and specific pressure along the length of the formed chord on the top of the bar during the tests. An algorithm for cal-culating the wear resistance of materials is developed, which allows estimating linear, mass and volume wear along the length of the chord. Results of tests of samples of various materials for wear resistance, carried out with a constant load, but at variable pressure, are presented. The test conditions allow to test materials of any hardness and evaluate the relative wear resistance in a short period of time, taking as a reference a sample of one of the materials, such as steel 40.
Keywords: pressure, disk, wear, wear resistance, material, friction machine, pad, friction, chord

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