The Effect of Abrasive Additives on the Tribotechnical Properties of Lubricants for the Wheel–rail System

L. F. Koroleva; R. A. Savrai; E. Yu. Prosviryakov; V. A. Kostarev; S. V. Pavlyshko; P. V. Kostarev

doi:10.17804/2410-9908.2023.1.054-064

L. F. Koroleva, R. A. Savrai, E. Yu. Prosviryakov, V. A. Kostarev, S. V. Pavlyshko, P. V. Kostarev

THE EFFECT OF ABRASIVE ADDITIVES ON THE TRIBOTECHNICAL PROPERTIES OF LUBRICANTS FOR THE WHEEL–RAIL SYSTEM

DOI: 10.17804/2410-9908.2023.1.054-064

The paper studies the polishing power of a tribochemically active abrasive material based on a solid solution of iron and aluminum oxides, as well as a solid solution of aluminum and iron oxides modified by zirconium oxide and yttrium oxide additives, and the tribotechnical properties of a lubricant doped with these abrasive materials. The modified Al2O3·Fe2O3·ZrO2·Y2O3 powders prove to have an essentially higher polishing power producing a considerably lower surface roughness than that of the unmodified Al2O3·Fe2O3 powder. By varying the content of the modifying oxides, one can change the tribochemical activity of the abrasive powder and select the best composition depending on the material to be polished. The addition of these abrasive powders is shown to have an essential effect on the tribotechnical properties of the lubricant for the wheel–rail contact. The laboratory testing of the lubricant compositions suggests their effective applicability to the wheel–rail contact.

Acknowledgement: This study was performed within the state assignments for the IES UB RAS, reg. nos. AAAA-A18-118020790142-9 and AAAA-A18-118020790147-4. Optical profilometry and tribotechnical tests were performed in Collective Use Center “Plas-tometriya” of the Institute of Engineering Science UB RAS.

Keywords: tribochemically active abrasive material, polishing ability, surface roughness, lubrication for the wheel–rail system, welding load, wear spot diameter

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Л. Ф. Королева, Р. А. Саврай, Е. Ю. Просвиряков, В. А. Костарев, С. В. Павлышко, П. В. Костарев

ВЛИЯНИЕ ДОБАВОК АБРАЗИВНОГО МАТЕРИАЛА НА ТРИБОТЕХНИЧЕСКИЕ СВОЙСТВА СМАЗКИ ДЛЯ СИСТЕМЫ «КОЛЕСО–РЕЛЬС»

В работе исследованы полирующая способность трибохимически активного абразивного материала на основе твердого раствора оксидов железа и алюминия, а также твердого раствора оксидов алюминия и железа, модифицированного добавками оксидов циркония и иттрия, и триботехнические свойства смазки с добавками данных абразивных материалов. Установлено, что модифицированные порошки Al2O3·Fe2O3·ZrO2·Y2O3 обладают существенно более высокой полирующей способностью и обеспечивают существенно более низкую шероховатость поверхности, чем немодифицированный порошок Al2O3·Fe2O3. При этом, варьируя содержание модифицирующих оксидов, можно менять трибохимическую активность абразивного порошка и подбирать наилучший состав в зависимости от полируемого материала. Показано, что добавка данных абразивных порошков оказывает существенное влияние на триботехнические свойства смазки для контакта «колесо–рельс». По результатам лабораторных испытаний исследуемых смазочных композиций можно предположить эффективность их использования для контакта «колесо–рельс».

Благодарность: Работа выполнена в рамках государственного задания ИМАШ УрО РАН по темам № АААА-А18-118020790142-9 и № АААА-А18-118020790147-4. Оптическая профилометрия и триботехнические испытания выполнены в ЦКП «Пластометрия» ИМАШ УрО РАН.

Ключевые слова: трибохимически активный абразивный материал, полирующая способность, шероховатость поверхности, смазка для системы «колесо–рельс», нагрузка сваривания, диаметр пятна износа

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Библиографическая ссылка на статью

The Effect of Abrasive Additives on the Tribotechnical Properties of Lubricants for the Wheel–rail System / L. F. Koroleva, R. A. Savrai, E. Yu. Prosviryakov, V. A. Kostarev, S. V. Pavlyshko, P. V. Kostarev // Diagnostics, Resource and Mechanics of materials and structures. - 2023. - Iss. 1. - P. 54-64. -
DOI: 10.17804/2410-9908.2023.1.054-064. -
URL: http://dream-journal.org/issues/2023-1/2023-1_390.html
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