Experimental study on arc ablation occurring in a contact strip rubbing against a contact wire with electrical current

Chen, G.X.; Yang, Hang; Zhang, W.H.; Wang, X.; Zhang, S.D.; Zhou, Zhengchun

doi:10.1016/j.triboint.2012.11.020

Cited by 60 publications

(23 citation statements)

References 22 publications

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“…It was found that arc discharges were produced periodically in accordance with the period of the dynamic contact force. This is quite different from previous static studies, in which arc discharges were always produced randomly under constant load [ 6 , 8 ]. In addition, the number of arc discharges increased with the increase of the running speed within the same test duration.…”

Section: Resultscontrasting

confidence: 77%

“…For instance, Kubo et al [ 5 ] studied the effects of arc discharge on the wear rate of a copper-impregnated metalized carbon strip at different numbers of revolutions and found that the accumulated discharge energy was proportional to the wear rate. Chen et al [ 6 ] carried out a series of tests on arc discharge at different normal force, drawing the conclusion that arc discharge could be suppressed and the wear rate of the pure carbon strip could be decreased by increasing the normal force. Xiong et al [ 7 ] investigated the wear behavior of a pure carbon strip under different electric current densities.…”

Section: Introductionmentioning

confidence: 99%

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Arc Discharges of a Pure Carbon Strip Affected by Dynamic Contact Force during Current-Carrying Sliding

Zhang

Song

2018

Materials

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Arc discharges of a pure carbon strip induced by dynamic contact force were studied on a pin-on-disk tribometer. It was found that arc discharges were produced periodically in accordance with the period of the dynamic contact force. The arcing rate of the pure carbon strip increased with an increase of frequency f and amplitude B, which led to a decrease of current-carrying quality. These influences at high velocities became much more significant. A critical point of the arcing rate at around 2% was detected. Lower than 2%, the pure carbon strip was able to maintain its excellent current-carrying capability; higher than this point, the current-carrying quality deteriorated abruptly. SEM and XPS analysis show that the element Cu detected on the worn surface at lower arcing rates was metal Cu. CuO was found at higher arcing rates. This indicated that the wear mechanism transferred from mechanical wear to arc erosion with the increase of the arcing rate.

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Section: Resultscontrasting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Arc Discharges of a Pure Carbon Strip Affected by Dynamic Contact Force during Current-Carrying Sliding

Zhang

Song

2018

Materials

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“…Investigations have been and are being carried out ( [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]) concerning the wear behaviour during strip and wire interaction and the development of materials for both strip and wire in order to enable the current collection keeping acceptable wear rate of the two contacting elements.…”

Section: Introductionmentioning

confidence: 99%

Electromechanical interaction between carbon-based pantograph strip and copper contact wire: A heuristic wear model

Bucca

Collina

2015

Tribology International

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Main contributions to the wear in the sliding contact between pantograph's strip and catenary's wire can be classified as: i) mechanical contribution, due to friction, ii) electrical contribution, due to current flow at the contact and iii) electrical arcs contribution related to power dissipated during arc generation. In this work, a heuristic wear model for the contact wire, which accounts for the mentioned three main contributions to the wear, is presented. After a tuning phase with results obtained by an experimental campaign aimed at evaluating the wear for the couple "pure copper contact wire -Kasperovski contact strip", the wear model is used in combination with a dynamical electromechanical model able to reproduce the electromechanical pantograph-catenary interaction.Suggested Reviewers: Takayuki Usuda Railway Technical Research Institute usuda@rtri.or.jp Dr Usuda is senior researcher on the interaction between pantograph and catenary and on related problems.Rafael Manory M&H Materials Pty Ltd rmanory@kuee.kyoto-u.ac.jp Dr Manory studies problems related to the interaction between pantograph and catenary, to the sliding wear, to the electromechanical contacts and to the wear tests for copper and graphite materials.Guangxiong Chen Southwest Jiaotong University, State Key Laboratory of Traction Power, Chengdu, China chen_guangx@163.com Author of different works on electromechanical problems related to pantograph-catenary interaction.Dear Tribology International Editors, we would like to submit the present paper titled " Electromechanical interaction between carbon based pantograph strip and copper contact wire: a heuristic wear model" for a possible publication on your review.The paper deals with a heuristic wear model, tuned using results obtained by a laboratory campaign on the couple "pure copper contact wire -Kasperovski contact strip", which is used in combination with a dynamical electromechanical model able to reproduce the electromechanical pantographcatenary interaction. This procedure try to reproduce the real conditions that cause the wire's wear evolution.The practical application of the presented procedure can be useful to estimate the maintenance costs related to the wear of contact wire and to assess the effective benefit of proposed innovative solutions for pantographs and catenaries.Best Regards, Giuseppe Bucca, Andrea Collina giuseppe.bucca@polimi.it Cover Letter I confirm that this paper is original and it has not been published previously and it is not under consideration elsewhere.Giuseppe Bucca, on behalf of all authors *Statement of OriginalityMain contributions to the wear in the sliding contact between pantograph's strip and catenary's wire can be classified as: i) mechanical contribution, due to friction, ii) electrical contribution, due to current flow at the contact and iii) electrical arcs contribution related to power dissipated during arc generation. In this work, a heuristic wear model for the contact wire, which accounts for the three main contributions to the wea...

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“…The tester has been introduced in the previous texts [3,12,13]. At present, a ring-on-block tester was developed for the present test purpose.…”

Section: Experiments Detailsmentioning

confidence: 99%

Study on Friction and Wear Properties of Pantograph Strip/Copper Contact Wire for High-Speed Train

Ding¹,

Xuan²,

Qiu-dong³

et al. 2014

TOMEJ

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A series of experiments on friction and wear properties of carbon strip rubbing against copper contact wire is performed on high-speed friction and wear tester with electric current. The results show that the friction coefficient is generally maintained between 0.24 and 0.37. In the absence of electric current, the coefficient of friction is higher than that in the presence of electric current. The wear rate of carbon strip materials is generally not more than 0.014g/km. In particular, the wear rate under the electric current of 240 A is 14 times more than that in the absence of electric current. By observing the scar of worn surface with optical microscope, it can be found that there are obvious slip scars and arc erosive pits. The dominated wear mechanisms are abrasive wear and arc erosion in electrical sliding frictional process.

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Experimental study on arc ablation occurring in a contact strip rubbing against a contact wire with electrical current

Cited by 60 publications

References 22 publications

Arc Discharges of a Pure Carbon Strip Affected by Dynamic Contact Force during Current-Carrying Sliding

Arc Discharges of a Pure Carbon Strip Affected by Dynamic Contact Force during Current-Carrying Sliding

Electromechanical interaction between carbon-based pantograph strip and copper contact wire: A heuristic wear model

Study on Friction and Wear Properties of Pantograph Strip/Copper Contact Wire for High-Speed Train

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