▎ 摘　　要

NOVELTY - Copper-based pantograph carbon slide plate comprises graphene copper-based nanoselenium niobium composite material. The graphene copper-based nanoselenium niobium composite material is prepared by mixing and baking a copper oxide with a weight ratio of 70-75 wt.% and a binder of 25-30 wt.%. The mixture comprises a copper powder in a weight ratio of 10-15 wt.% and a dry blend in a weight ratio of 85-90 wt.%. The dry blend comprises an aggregate having a weight ratio of 55-60 wt.% and a powder having a weight ratio of 40-45 wt.%. The powder comprises graphene, nano-selenium powder, special graphite powder and carbon black, and the weight ratio is 35:30:20:15. The aggregate comprises 20 to 25 wt.% aggregate A, 25 to 30 wt.% aggregate B, and 45 to 50 wt.% aggregate C, where 0.03 mm more than or equal to aggregate A particle size less than 0.05 mm, 0.01 mm more than or equal to aggregate B particle size less than 0.03 mm and particle size of aggregate C is less than 0.01 mm. USE - Copper-based pantograph carbon slide plate. ADVANTAGE - The copper-based pantograph carbon slide plate has high wear resistance, low friction coefficient, high conductivity, high cost performance and good impact resistance and effectively solves multiple problems existing in the use of the existing pantograph slide, and has good practicability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a copper-based pantograph carbon slide plate, which involves: (A) crushing, sieving and compounding of aggregates, crushing the aggregate into crusher and dividing into aggregate A, aggregate B and aggregate C, and then mixing and mixing according to the mass percentage; (B) mixing ingredients of the powder, the graphene, the nano-selenium niobium powder, the special graphite powder and the carbon black; (C) mixing ingredients of the dry mix, and the powder according to the weight ratio; (D) grinding the dry mix; (E) preparing a mixture, and mixing the copper powder and the dry mixture according to a weight ratio; (F) preparing a kneaded material, and mixing the mixture and the binder by weight ratio; (G) pouring the kneaded material into a mold, and adopting a two-way press molding to form a pantograph carbon slide blank of a certain shape and size, and have a certain density and strength; (H) placing pantograph carbon slide blank in a roasting apparatus for roasting, and the roasting steps are pantograph carbon slide blank is heated to 250 degrees C at a temperature increase rate of 25 degrees C/h, at a temperature increase rate of 8 degrees C/h from 250 degrees C to 450 degrees C, heating the temperature from 450 degrees C to 700 degrees C at a temperature increase rate of 5 degrees C/h, heating the temperature from 700 degrees C to 900 degrees C at a temperature increase rate of 5-6 degrees C/h, heating the temperature from 900 degrees C to 1100 degrees C at a temperature increase rate of 6 degrees C/h, heating the temperature from 1100 degrees C to 1200 degrees C at a temperature increase rate of 6-7 degrees C/h, heating at 1200 degrees C for 24 h, then naturally cooling down, when the temperature drops below 300 degrees C, ventilation and cooling; (I) weighing pantograph carbon slide roasting product into the graphite crucible; (J) usinggraphite crucible, the pre-heating furnace to preheat the pantograph carbon slide roasting product and the graphite crucible according to the heating curve, and the copper is placed in the melting tank, and the electric heating is performed to melt it; (K) preheating, the graphite crucible is pulled out from the preheating furnace, placed under the melting tank, and the molten metal solution is poured into the graphite crucible containing the pantograph carbon slide roasting product; (L) placing graphite crucible in a vacuum device to evacuate, and when the vacuum reaches 0.085 MPa, the vacuum is finished; (M) placing graphite crucible equipped with the pantograph carbon slide plate in a preheating furnace for preheating for half an hour, after which the preheating is stopped, and after the pantograph carbon slide plate is cooled to room temperature, the pantograph carbon slide plate made of graphene copper-based nanoselenium niobium composite material is obtained; and (N) subjecting pantograph carbon slide plate to subsequent processing according to the use requirements.