Study of the predominant defect development in rails of underground systems after preventive grinding and lubrication

Voronin, Sergey; Skoryk, Oleksii; Stefanov, Volodymyr; Onopreychuk, Dmytro; Korostelov, Yevhen

doi:10.1051/matecconf/201711603005

Cited by 11 publications

(8 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of this work confirm the conclusions from earlier scientific studies [3,4,[15][16][17][18][28][29][30] on the positive use of lubricants with alloying additives in the friction pair «wheel-rail». However, it should be noted that the authors of papers [10,11,13,14] used plastic lubricants, and works [14,15,28,29] applied, as additives to oils, a variety of forms of carbon; the application of lubricants in the cited works did not involve an aerosol technique.…”

Section: Discussion Of Results Of Studying the Influence Of The Concesupporting

confidence: 89%

“…A contact area decreases, resulting in increased contact pressures [1]. Together, these processes lead to the emergence of a series of defects [2][3][4] and increase the wear intensity of rails in the curved track sections. It is a relevant task to resolve this issue as it affects the material and energy costs and, most importantly, traffic safety [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Establishing a pattern in the influence of two-layer greasing on the wear resistance of rails

Voronin

Asadov²,

Onopreichuk

et al. 2020

EEJET

Self Cite

View full text Add to dashboard Cite

Наведені результати експериментального дослідження впливу двошарового мащення, що формується з графітового порошку та базових молекул індустріальної оливи, на зносостійкість бічної поверхні головки залізничної рейки. Так, при збільшені концентрації графітового порошку в оливі від 0 до 3 % при навантаженні 363-646 N величина зношування зменшується на 42-29,7 % відповідно. Методика досліджень передбачала моделювання процесу тертя кочення з проковзуванням за допомогою роликів на машині тертя СМЦ-2. Саме такий вид тертя має місце в трибосистемі гребінь колеса-бічна поверхня головки рейки в кривих ділянках колії. Також передбачалась подача оливи аерозольним способом. Варіювались два незалежних фактори: концентрація графітового порошку в індустріальній оливі И-12А та зовнішнє навантаження. Незмінними фак торами залишались частота обертання роликів, що забезпечувало стабільне проковзування на рівні 20 %, температура оливи, час проведення кожного випробування. Результати експерименту дозволили отримати рівняння регресії, яке описує закономірність зношування ролика пари тертя «ролик-ролик» в залежності від обраних факторів. На завершальному етапі роботи був проведений розрахунок ресурсу рейки в кривій ділянці колії. Результати розрахунку ресурсу залізничної рейки за умов збільшення концентрації графітового порошку від 0 до 3 % при зовнішніх навантаженнях від 363 до 646 N показали приріст ресурсу рейки від 40 до 61 %. Розрахунок базувався на отри маних експериментальних даних, що характеризують процес тертя бічної поверхні головки рейки з гребенем колеса в кривій ділянці колії за умов двошарового мащення при різних навантаженнях. Двошарове мащення формувалось шляхом аерозольного нанесення оливи на поверхню тертя з різною концентрацією графіту. Отриманні дані дають можливість прогнозувати строк служби залізничних рейок в кривих за умов двошарового мащення Ключові слова: графітовий порошок, двошарове мащення, колесо-рейка, трібологічна система, зносостійкість, аерозоль

show abstract

Section: Discussion Of Results Of Studying the Influence Of The Concesupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Establishing a pattern in the influence of two-layer greasing on the wear resistance of rails

Voronin

Asadov²,

Onopreichuk

et al. 2020

EEJET

Self Cite

View full text Add to dashboard Cite

show abstract

“…In other words, the thickness of a lubricant film must exceed arithmetic average roughness heights of contacting surfaces. In this case, the wear and tear of the surfaces will be minimal [6,7]. The answer to the second question is determined by means of carrying out the analysis of forces affecting the lubricant applied on the friction surface taking into account the thickness of the applied lubricant and compressed air consumption.…”

Section: Analysis Of Recent Studies and Publicationsmentioning

confidence: 99%

Study of the Process of Lubricant Application on the Friction Surface Using Aerosol Lubricators

Voronin¹,

Hrunyk²,

Asadov³

et al. 2018

IJET

Self Cite

View full text Add to dashboard Cite

The problem of calculation and forecasting main parameters of aerosol lubricators designed for applying lubricants on angled to the horizon friction surfaces e.g. the lateral surfaces of a rail and a wheel flange of railway rolling stock is solved in the articl e. The main parameters of lubricators being considered in the article are compressed air supply, the geometry of a spray nozzle and the boundary thi ckness of a lubricant layer applied to the friction surface where there is no creep of a lubricant under the action of gravity. A structural model of application and retention of a lubricant on a friction surface has been proposed. A mathematical model to calculate main parameters of aerosol lubricators has been developed. The model establishes the connection between the geometry of lubricated friction surfaces, physico-chemical properties of lubricants and the diameter of nozzle aperture and the compressed air supply. The example of calculation of the boundary thickness of a lubricant layer applied to the friction surface under the condition of the absence of its creeping under the action of gravity has been presented in the article. The article presents the results of experimental studies the process of aerosol application of a lubricant to the friction surface.

show abstract

“…The third property is a complex of features named as "lubricating properties" [9] and it is evaluated by the friction coeffi cient, wear of friction surfaces, critical load, sliding velocity and temperature of transition to catastrophic wear. The fourth important property of SL is so called quantity of lubricating material that is not pressed out of the contact -unpressable quantity [10].…”

Section: Introductionmentioning

confidence: 99%

Lubricants for rail transport liquid (plastic) for friction pair “wheel – rail”

Belikov¹,

Kreknin²,

Matsuk³

et al. 2022

Nauk. visn. nat. hirn. univ.

View full text Add to dashboard Cite

Purpose. To formulate the requirements for the basic properties of lubricants suitable for use in the systems of on-board lubricators of rail vehicles. To develop a generalized algorithm for controlling the devices of the lubrication system of rail vehicles and to propose a method for controlling the lubrication system of the wheel flanges of a rail vehicle, which makes it possible to turn on the system in advance in order to prevent an increase in the interaction forces of the wheel flanges and rails during the entry to the curved section of the rail track, as well as on the turnouts. Methodology. Research methods include statistical analysis of the results of experimental tests of the properties of existing and proposed lubricants on the STs-2 friction machine and in the conditions of real operation of the rolling stock of JSCUkrzaliznytsia. Findings. Based on the results of operational tests, it was found that Relsol-M lubricant, which is regenerated, homogenized and modified with solid lubricating impurities, even with an expired shelf life, retains and demonstrates the transfer effect on all wheels of the VL11m/6 locomotive, and also slows down the wear rate of the combs of the wheel rims which were not chiseled during the tests by 3.57 times and the combs of the bandages which were chiseled during the tests by 4.25 times. Mariol NT demonstrated the effect of reducing the intensity of wear processes of the ridges of locomotive tires in the mode of freight traffic in relatively light track conditions by 2.5 times, and in more difficult road conditions by 5 times. Originality. Requirements for the basic properties of lubricants, which are suitable for use in on-board lubricator systems of rail vehicles, have been formulated. Practical value. A generalized algorithm for controlling the lubrication system of railway rolling stock is developed and a method for controlling the lubrication system of the flanges of the rail rolling stock is proposed, which makes it possible to turn on the lubrication system in advance when a rail vehicle enters a curved section of the track, as well as a turnout.

show abstract

Study of the predominant defect development in rails of underground systems after preventive grinding and lubrication

Cited by 11 publications

References 6 publications

Establishing a pattern in the influence of two-layer greasing on the wear resistance of rails

Establishing a pattern in the influence of two-layer greasing on the wear resistance of rails

Study of the Process of Lubricant Application on the Friction Surface Using Aerosol Lubricators

Lubricants for rail transport liquid (plastic) for friction pair “wheel – rail”

Contact Info

Product

Resources

About