Severe wear of pantograph contact strips are caused by electric arc between contact strips and overhead wires. Arc-resistant contact strips for conventional rolling stocks were developed. They are made of sintered copper alloys. They contain hard metal such as Cr or Fe-Mo to improve wear resistance and MoS2 or Cu2S-FeS, in place of graphite, to improve arc resistance and lubricity. New type lubricants for contact strips were developed to suppress wear of contact strips and the overhead wires. They are made of wax containing graphite to improve electric conductivity. New type contact strips made of carbon for conventional rolling stocks were developed to suppress wear of overhead wires. They are going to be used widely in IR lines. Wear of contact strips of the Shinkansen was investigated and it became evident that wear can be expressed by the function of velocity of the rolling stocks, collected current and material constants. It also became clear that electrical wear is more severe than mechanical wear. New contact strips made of sintered iron alloys for the Shinkansen were developed containing hard metal such as Cr, Fe-W or Fe-Mo to improve wear resistance and MoS2 or impregnated low melting point metal to improve lubricity of them.
Research and development on high speed contact strips made of sintered alloys
Untersuchung und Entwicklung von Hochgeschwindigkeitskontaktstücken aus gesinterten Legierungen
Titel japanisch
Journal of the Japan Society of Powder and Powder Metallurgy ; 42 , 8 ; 876-883
1995
8 Seiten, 11 Bilder, 5 Tabellen, 6 Quellen
Article (Journal)
Japanese
Improving the contact between collector strips and contact wire
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