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| Study on self-lubricating material used for pantograph of subway |
| XIE Jian-quan1， ZHANG Yan-lin2 |
（1. Powder Metallurgy Institute， Central South University， Changsha 410083， China
2. Electric Equipment Branch， CRRC Zhuzhou Locomotive Co.， Ltd.， Zhuzhou 412001， China） |
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Abstract Cu-Sn-Ni-C self-lubricating liner was prepared by powder metallurgy technology. Results show that the sintered density is 6.70 g/cm3， the hardness is 375 HB， the crushing strength is 175 MPa and the oil content is 18.1% （mass percent） when the sintering temperature is 800 ℃ and the holding time is 80 min. The Cu-Sn-Ni-C self-lubricating liner was installed on the pantograph of the subway. After the operation of 50 000 km， the inner hole of the self-lubricating liner has no fracture and abnormal phenomenon except for a small amount of wear， which fully meets the requirements of the metro pantograph.
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Received: 10 March 2017
Published: 22 December 2017
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2017, Vol. 27 
