Optimization of material hardness of solid-rolled wheel of freight cars

Petrakova, A. G.

doi:10.3103/s1068366609010073

Cited by 4 publications

(17 citation statements)

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“…through a series small scale tests [13,14], and it was indicated that the optimal H w /H r was 0.91-0.97 or close to 1. Based on these references mentioned, there is still no agreed conclusion about the effect of the change in hardness on the wear of wheel-rail materials.…”

Section: Introductionmentioning

confidence: 99%

Investigation on wear and rolling contact fatigue of wheel-rail materials under various wheel/rail hardness ratio and creepage conditions

Zhou

Ding

et al. 2020

Tribology International

101

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Section: Introductionmentioning

confidence: 99%

Investigation on wear and rolling contact fatigue of wheel-rail materials under various wheel/rail hardness ratio and creepage conditions

Zhou

Ding

et al. 2020

Tribology International

101

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“…HBRail The hardness ratio for wheel-rail pairs shows a relationship with wear rate for these components [2][3][4]. However, there are several other factors related to rail wear, such as track geometry, axle load, and speed, among others.…”

Section: Countrymentioning

confidence: 99%

“…Optimization of rail making technology has been carried out along the last four decades. However, wheel standards had remained unchanged since 1969 [2]. Considering this, studies on wheels have been made aiming to increase hardness to the 340 -363 HB range, striving for reduction of wear rate of this component due to evolution of rail properties [2].…”

Section: Introductionmentioning

confidence: 99%

“…However, wheel standards had remained unchanged since 1969 [2]. Considering this, studies on wheels have been made aiming to increase hardness to the 340 -363 HB range, striving for reduction of wear rate of this component due to evolution of rail properties [2]. Yet, new studies have been carried out showing that material hardness only is not a sufficiently reliable criterion for achieving wear resistance [2].…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, another study [4] show that ratio between rail/wheel hardnesses should be equal or greater than 1.0, while [1] show this ratio should be within 1.0 and 1.1. Table 1 depicts maximum hardnesses used for rails and wheels in some countries, as well as the rail/wheel hardness ratio "R" [1,2]. Table 1.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sliding Wear of Rail and Wheel Steels: Effect of Hardness Ratio, Normal Load and Lubrication

Viana¹,

Tressia²,

Sinatora³

2020

Tribol. Ind.

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The pin-on-disc test model system was used to simulate contact wear between wheel flange and rail gauge corner. Pins were extracted from a class C cast steel wheel and discs were extracted from premium and intermediate steel grades rail, both hypereutectoid and with hardness between 321 and 392 HB. Rails are pearlitic and the bainitic wheel is in its first life. Dry and lubricated tests were performed with normal load variation (40, 80 and 120 N). Under dry condition, there was no influence of the pair hardness to mass loss of the tribosystem studied, contrary to what is stated by literature. For the lubricated tests, mass loss was significantly lower and regardless of both, hardness ratio and normal load, than in the other tests. This shows the technological importance of: (i) implementing wheel flange lubrication (locomotive embedded process); (ii) improving rail lubrication techniques (mobile or way side process) and/or friction coefficient measurement techniques and (iii) need for revision of wheel standards and/or specifications.

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Estudo do desgaste por deslizamento em aços de trilhos e roda: efeito da razão entre durezas do par, da força normal e da lubrificação em ensaios pino contra disco.

Viana

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Optimization of material hardness of solid-rolled wheel of freight cars

Cited by 4 publications

References 0 publications

Investigation on wear and rolling contact fatigue of wheel-rail materials under various wheel/rail hardness ratio and creepage conditions

Investigation on wear and rolling contact fatigue of wheel-rail materials under various wheel/rail hardness ratio and creepage conditions

Sliding Wear of Rail and Wheel Steels: Effect of Hardness Ratio, Normal Load and Lubrication

Estudo do desgaste por deslizamento em aços de trilhos e roda: efeito da razão entre durezas do par, da força normal e da lubrificação em ensaios pino contra disco.

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