Method of manufacturing copper-tungsten alloy in round bar and wire form

摘要

The present invention relates to a method for producing a copper-tungsten (cu-w) sintered alloy used for ultra-high-voltage and high-current breaker contacts and electrode rods and is characterized in that 20-55 wt% of a thermoplastic resin (polyethylene, , 55 to 35 wt% of wax (paraffin, beeswax, etc.) and 30 to 10 wt% of a lubricant (stearic acid, oxalic acid, and the like), and the combination of the above steps are charged into a stirrer and heated at a temperature of 140 to 170 [ Mixing and kneading the tungsten powder and the binder to uniformly disperse and mix the tungsten powder and the binder to form a compound having a predetermined shape, and a step of mixing the prepared mixture with the heating device attached to the extruder, C and extruding the extruded mold to form a rod-shaped specimen; and a step of heating the extruded specimen at a temperature of 400 to 550C for 2 to 3 hours A sintering step of holding the binder at a temperature of 1100 to 1250C for 1 hour in order to improve the bonding force between the tungsten powders after removing the binder and a sintering step of forming a tungsten-And the copper is infiltrated at a temperature of 1100 to 1250C to the specimen from which the binder has been removed.