Research Progress in Sliding Electrical Contact Materials for Rail Transit

doi:10.11985/2023.03.002

Abstract

Abstract:

The friction material is the core issue of sliding electrical contact and the hot spot of cutting-edge research. As the typical sliding frictional pairs in the electric contact of rail transport, the contact wire and pantograph slide plate are the key devices for high-speed trains to obtain electric energy, and the performance of their materials directly affects the quality of the electric contact system of the bow network and the safe and stable operation of electric locomotives. At present, with the rapid development of high-speed railway, there is an urgent need to research and develop sliding electrical contact materials for rail transit bow network with excellent comprehensive performance. The performance requirements of rail transit sliding electrical contact materials are introduced, the development history of contact wire and pantograph slide plate at home and abroad are reviewed, the research progress and problems in preparation process technology and other aspects of contact wire and pantograph slide plate materials are summarized, the development trend of rail transit sliding electrical contact materials are looked forward and future research focus are put forward.

Key words: Rail transit, sliding electrical contact, contact wire, pantograph slider, electric contact materials

CLC Number:

U225

WANG Xiangfei, GAO Guoqiang, YANG Zefeng, HE Shuhang, MA Yaguang, DONG Keliang, WEI Wenfu, WU Guangning. Research Progress in Sliding Electrical Contact Materials for Rail Transit[J]. Journal of Electrical Engineering, 2023, 18(3): 2-17.

Figures/Tables 12

References 104

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接触线	参数	备注
张力/kN	25~30	设计计算假设条件如下： ① 安全系数为2.2； ② 张力差为10%； ③ 张截为120 mm²
密度/(kg·mm^-2)	1.1~1.2
常温抗拉强度/MPa	600~700
拉断力/kN	70~85
电导率(%)IACS	80~95
高温抗拉强度下降率(%)	10.0
耐磨、耐腐蚀性	与铜接触线相当

接触导线的种类	抗拉强度/MPa	电导率(% IACS)
GLCA-100/215	≥182	≥43.6
CGLN-250(钢铝)	≥216	≥46.3
TA-196(钢铝)	≥350	≥46.5
GT-CS110	≥655	≥60.2
GT-CSD110	≥493	≥81.1

国别	型号	密度/ (g·cm^-3)	硬度 HS	电阻率/ (μΩ·m)	抗折强度/ MPa	抗压强度/ MPa
中国	C_26P	2.74~3.25	93.5	7.5	103.5	370
英国	MY7D	2.4	96	8	113	420