Wire-drawing lubricants for trolley wires or shaped wires intended for transport of electric current for motors of trains, trams, underground trains and electric buses.
Trolley wire is a shaped wire of large section made up of copper or a copper alloy, obtained by wire drawing.
Drawing trolley wire or shaped wire poses technical problems because of the strong concentration of forces acting on the grooves. The shaping tools can wear very quickly.
Trolley wire is intended for the transport of electric current for:
- train motors
- trams and underground trains
- electric buses