Effect of Material Combination of Metallic Contact Strip and Contact Wire on Wear Characteristics


Sumihisa AOKI, Kunio FUKUHARA, Hiroki NAGASAWA
Several different metallic materials are applied to contact wire and contact strip, corresponding to recent speed-up of vehicles. As it seemed necessary to study the effect of different material combinations for contact wire and contact strip on wearing characteristics, bench tests were carried out with 9 different material combinations. Materials chosen were hard-drawn copper, precipitation hardening copper alloy and mild steel for contact wire, and Cu-base sintered alloy, Fe-base sintered alloy and mild steel for contact strip. Results are investigated mainly from a standpoint of shedding light on wearing characteristics under combinations of these Cu-base and Fe-base materials, with emphsis on the effect of arccurrent and adhesion.