Comparative investigation into the friction and wear behaviours of a Cu–Ag contact wire/carbon strip and a pure copper contact wire/carbon strip at high speeds

Wear ◽  
2017 ◽  
Vol 376-377 ◽  
pp. 1552-1557 ◽  
Author(s):  
Y. Hu ◽  
G.X. Chen ◽  
S.D. Zhang ◽  
G.Q. Gao ◽  
G.N. Wu ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Pure Copper ◽  
Comparative Investigation ◽  
Contact Wire ◽  
High Speeds ◽  
Ag Contact

Friction and wear behavior of pure carbon strip sliding against copper contact wire under AC passage at high speeds

2011 ◽  
Vol 44 (4) ◽  
pp. 437-444 ◽  
Author(s):  
T. Ding ◽  
G.X. Chen ◽  
X. Wang ◽  
M.H. Zhu ◽  
W.H. Zhang ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Wear Behavior ◽  
Friction And Wear Behavior ◽  
Contact Wire ◽  
High Speeds ◽  
Pure Carbon

Selection of Pantograph Strip/Contact Wire Couples in Catenary/Pantograph System

2011 ◽  
Vol 347-353 ◽  
pp. 647-650
Author(s):  
Tao Ding ◽  
Guang Xiong Chen ◽  
Shu Fen Xiao ◽  
Li Xie
Keyword(s):  
Stainless Steel ◽  
Friction And Wear ◽  
Pure Copper ◽  
Wear Volume ◽  
Test Results ◽  
Contact Wire ◽  
Pure Carbon ◽  
Pin On Disc ◽  
Properties Of Materials ◽  
Selection Of

A serials of experiments were carried on the pin-on-disc friction and wear tester. The friction and wear behaviors of on four materials couple with electric current were studied on in different conditions. The result indicates that properties of materials couple have a significant influence on the test results. The friction coefficient is the highest in process of the copper-impregnated metallized carbon rubbing against pure copper couple, and its wear volume of carbon strip material is also the largest. However, the friction and wear volume of copper-impregnated metallized carbon/stainless steel and pure carbon/pure copper couples are lower. Therefore, both friction couples are appropriate for pantograph strip/contact wire couple.

Friction and Wear Characteristics of H25, H188, H214 Against Hastelloy X

2011 ◽  
Author(s):  
M. Bulut Coskun ◽  
Serdar Aksoy ◽  
Necdet Basaran ◽  
Mahmut F. Aksit
Keyword(s):  
Friction And Wear ◽  
Operating Conditions ◽  
Dead Weight ◽  
Hastelloy X ◽  
Wear Characteristics ◽  
High Speeds ◽  
Custom Design ◽  
Increasing Demand ◽  
Efficient Power ◽  
Friction And Wear Characteristics

Increasing, demand for more efficient power generation forces turbomachinery to operate at higher temperatures and compression ratios. High speeds combined with high temperatures make turbomachinery sealing applications even more challenging. In order to confirm sufficient service life, seal material pairs should be tested similar to engine operating conditions. The high temperature friction and wear characteristics of cobalt superalloys, Haynes 25, 188 and 214 sheets, rubbed against Hastelloy X pins are presented in this work. Tests are conducted at 25, 200 and 400°C with a validated custom design linear reciprocating tribometer. Sliding speed and distance are 1Hz and 1.2 Km respectively. Friction coefficients are calculated with friction force data acquired from load cell and the dead weight where wear coefficient is calculated through mass loss after the tests.

Bending Fatigue Life Evaluation of Pure Copper and Copper Alloy Contact Wire

2012 ◽  
Vol 29 (12) ◽  
pp. 1346-1350 ◽  
Author(s):  
Yongseok Kim ◽  
Haochuang Li ◽  
Minsung Kang ◽  
Jae-Mean Koo ◽  
Chang-Sung Seok ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Copper Alloy ◽  
Pure Copper ◽  
Bending Fatigue ◽  
Contact Wire ◽  
Life Evaluation ◽  
Fatigue Life Evaluation

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

2014 ◽  
Vol 8 (1) ◽  
pp. 125-128 ◽  
Author(s):  
Tao Ding ◽  
Wenjing Xuan ◽  
Qiudong He ◽  
Hao Wu ◽  
Wei Xiong
Keyword(s):  
Wear Rate ◽  
Electric Current ◽  
High Speed ◽  
Friction And Wear ◽  
Optical Microscope ◽  
Wear Properties ◽  
Contact Wire ◽  
Arc Erosion ◽  
The Coefficient Of Friction ◽  
Friction And Wear Properties

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.

The Application of Rare-Earth Element

2011 ◽  
Vol 233-235 ◽  
pp. 3005-3009
Author(s):  
Yu Cai Wu ◽  
Ming Yan
Keyword(s):  
Tensile Strength ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Rare Earth Element ◽  
Earth Element ◽  
Additive Process ◽  
Contact Wire ◽  
Specific Elongation ◽  
Ag Contact ◽  
The Rare Earth

In this paper, the process of Cu-Ag contact wire with adding rare-earth elements was presented. The additive process of the rare-earth elements and the function of the rare earth were chiefly analyzed. Adding the rare-earth elements into melt alloy, the oxide and sulfur can be removed from the liquid, so we can get the purified alloy. At the same time, adding rare-earth can reduce the external crack flaws which produced during the casting and makes the grain refined, as the result, the properties of the Cu-Ag alloy contact wire can be greatly improved and meliorated. Such as the conductivity, the specific elongation, tensile strength and so on, are improved.

A Comparative Investigation of the Sliding Wear of Some FCC Metals

1983 ◽  
Vol 105 (1) ◽  
pp. 36-41 ◽  
Author(s):  
R. Glardon ◽  
I. Finnie
Keyword(s):  
Sliding Wear ◽  
Friction And Wear ◽  
Copper Alloys ◽  
Comparative Investigation ◽  
Experimental Investigations ◽  
Future Research ◽  
Subsurface Layers ◽  
Areas Of Interest ◽  
Cyclic Plastic Deformation

Experimental investigations of the friction and wear of four copper alloys and pure nickel are presented. Measurements of the shape and dimensions of the wear tracks and of the extent of subsurface layers are also reported. The results are discussed in terms of mechanical behavior and possible correlations with conventional mechanical properties are considered. The role of cyclic plastic deformation is emphasized and areas of interest for future research are suggested.

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