2017
DOI: 10.1177/0954409717734681
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Optimisation of grease application to railway tracks

Abstract: Trackside lubricators are designed to deliver grease to passing wheel flanges to reduce wheel and rail wear on curves. Ensuring that they are set up to deliver sufficient grease for the range of vehicles passing a site can be a challenge. For example, vehicle dynamics modelling and site investigations have shown that the wheels of passenger vehicles do not run as close to the rail face as those of freight vehicles, meaning that they are less likely to contact the grease and lubricate subsequent curves. To inve… Show more

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Cited by 12 publications
(3 citation statements)
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“…Finally, the proposal was adopted to replace P8 tread with P12 one, so as to implement the economical re-profiling of wheelset, which has the following four features: i) The anti-RCF design near to flange root is used to avoid the two-point contact on rail shoulder as much as possible; ii) The flange thickness is further reduced by 2 mm, which matches to the UIC 56E1 with bottom inclination of 1/20, and λeN ≈ 0.10; iii) Moreover, UIC60E2 with bottom inclination of 1/40 is partially changed in UK HSR to form hammering impacts but the rail gauge is broadened to1438 mm, to which the P12 tread with flange thickness of 26 mm is matched, λe<0.10; iv) So the economic re-profiling option of wheelset is implemented with the assistance of auxiliary technologies such as proper flange grease spraying [46], and the wheelset re-profiling period is extended twice.…”
Section: Correct Direction Of Chinese Hsrs Improved Design 31 Rationa...mentioning
confidence: 99%
“…Finally, the proposal was adopted to replace P8 tread with P12 one, so as to implement the economical re-profiling of wheelset, which has the following four features: i) The anti-RCF design near to flange root is used to avoid the two-point contact on rail shoulder as much as possible; ii) The flange thickness is further reduced by 2 mm, which matches to the UIC 56E1 with bottom inclination of 1/20, and λeN ≈ 0.10; iii) Moreover, UIC60E2 with bottom inclination of 1/40 is partially changed in UK HSR to form hammering impacts but the rail gauge is broadened to1438 mm, to which the P12 tread with flange thickness of 26 mm is matched, λe<0.10; iv) So the economic re-profiling option of wheelset is implemented with the assistance of auxiliary technologies such as proper flange grease spraying [46], and the wheelset re-profiling period is extended twice.…”
Section: Correct Direction Of Chinese Hsrs Improved Design 31 Rationa...mentioning
confidence: 99%
“…Train wheels pass through the puddle picking-up the product and then transferring it back to the rail with each subsequent contact, spreading it further down the track, as shown in Figure 2. 9 Numerous studies have investigated the influence of TOR products on wheel/ rail interface friction using a range of test rigs of different scales, such as a pin-on-disc machine; 10 a twin disc rig, 11,12 full-scale rigs (FSR) 6,13 and scaled-wheel rigs 14 and more recently a high pressure torsion rig 15 However, few studies have investigated product transfer mechanisms that dictate product are pick-up, carry-on along the track and consumption. Some work has been carried out investigating this for grease used for curve lubrication.…”
Section: Introductionmentioning
confidence: 99%
“…Some work has been carried out investigating this for grease used for curve lubrication. 14,16 While these studies give possible test approaches, the application process and properties for TOR products are very different to greases, so the findings cannot be transferred. One laboratory-based study has been carried out on TOR product pick-up, 17 but in this work, friction was not measured and mechanisms of pick-up/carry-down were not explored in detail.…”
Section: Introductionmentioning
confidence: 99%