Issue |
E3S Web of Conf.
Volume 402, 2023
International Scientific Siberian Transport Forum - TransSiberia 2023
|
|
---|---|---|
Article Number | 06018 | |
Number of page(s) | 14 | |
Section | Railway Innovations | |
DOI | https://doi.org/10.1051/e3sconf/202340206018 | |
Published online | 19 July 2023 |
Methodology for the formation of rail repair profiles by grinding
Siberian Transport University Dusi Kovalchuk str., 191, Novosibirsk, 630049, Russia
* Corresponding author: urk@stu.ru
The formation of a rail transverse profile to reduce contact loading and wear from railway rolling stock wheels is one of the main tasks of rail grinding. At present, when designing a rail grinding technology, a future rail profile contour is selected from a set of repair profiles available in a database. Frequently, the profile selected from the database is less than optimal, as it does not provide the required interaction in the wheel-rail system for a particular track section, and its formation requires excessive metal removal, which reduces the rail's lifespan. The paper proposes a new methodology for designing rail repair profiles based on a fundamentally new approach, consisting in designing rail geometric parameters at the stage of preparing the technological process of its grinding. This approach to the rail grinding technology design allows specifying a geometric profile for the certain railway track operating conditions and the worn rail condition, thus bringing metal removal from a rail head to required minimum and, as a result, increasing the service life of rails and the performance of a rail grinding train. To assess the efficiency and applicability of the proposed method for different railway track operating conditions, a comparative modelling of the existing approach in selecting a rail repair profile with the proposed approach to its design was carried out. The proposed method showed the best result in all cases.
© The Authors, published by EDP Sciences, 2023
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