Preparation Of Tungsten Copper Alloy Contacts

Step 1: According to the mass ratio of CuO powder and W powder 1:1, mix the CuO powder and W powder evenly.

Step 2: Reduce the mixed powder at 450℃ under the atmosphere of hydrogen for 1h, then compacting, pressing and forming, and breaking it into powder. Then at the temperature of 700℃, under the atmosphere of hydrogen, reduction treatment for 1h, increase pressure to press molding, broken into powder;

Step 3: Put the mixed powder treated in step 2 into the compacted blank, place copper flakes above and below the compacted blank, and sintering for 3h at the temperature of 1100℃;

Step 4: Place the sintered material in a graphite container, and place the tungsten filament weaved body on the material and hold it in a vacuum at 1200℃ for 4 hours, that is the copper-tungsten contact material .