| 摘要 |
A method of producing a nonwelding contact assembly for an electrical switch using a composite contact material formed by extruding a metal oxide core (20) surrounded by a metal or metal alloy sheath (21) with good welding properties to form a wire (22) of core (23) material having a layer (24) of the metal or metal alloy metallurgically bonded thereto. A segment (31) of the wire is resistance welded to a contact carrier (30) and coined to the desired contact shape (32), after which the layer on the contact surface (33) is sufficiently thin that it is oxidized to provide nonwelding characteristics after a few switch operations. |
