▎ 摘　　要

NOVELTY - Preparing metro collector sliding block by using graphene-impregnated metal carbon material comprises e.g. (i) selecting raw material and proportioning the raw material comprises aggregate and powder, the aggregate comprising asphalt coke and forged petroleum coke, the powder comprises graphite, graphite powder and carbon fiber; (ii) kneading the raw materials according to proportion, the placing into the pot to dry mixing, dry mixing after adding adhesive for wet mixing; and (iii) flaking, milling, screw extrusion forming: placing the paste in a rolling machine for flaking, flaking, drying. USE - The metro collector sliding block is useful in underground railway field. ADVANTAGE - The sliding block has good physicochemical performance index. DETAILED DESCRIPTION - Preparing metro collector sliding block by using graphene-impregnated metal carbon material comprises (i) selecting raw material and proportioning the raw material comprises aggregate and powder, the aggregate comprising asphalt coke and forged petroleum coke, the powder comprises graphite, the graphite powder and carbon fiber, the raw material weight ratio of the calcined petroleum coke is 60-65%, the weight ratio of the pitch coke is 15-20%, the weight ratio of graphite powder is 15-20%, the weight ratio of the carbon fiber is 5-10%, the weight ratio of the graphite alkene is 3-5%, the mass ratio of grain diameter of the calcined petroleum coke in the aggregate is: 0.33 mm m is not less than the grain diameter is not less than 0.45 m the mass ratio of 5-15 wt.% 0.10 mm; the grain diameter is not greater than 0.33 mm the mass ratio of 15-25 wt.% 0.07 mm; the grain diameter is not less than 0.10 mm of mass ratio is 25-30 wt.%; grain diameter is not greater than 0 and not less than 0.07 mm of mass ratio is 40-45 wt.%; mass proportion of grain diameter of the bone material is pitch coke is 0.5 mm not less than the grain diameter is not less than 2 mm of the total mass is 55-60%, the grain diameter is not less than 0.5 mm of mass ratio is 40-45%, tensile modulus of the graphene of the powder is not greater than 1.01 TPa, and the ultimate strength than 116 Gpa; (ii) kneading the raw materials according to proportion, then placing into the pot to dry mixing, dry mixing after adding adhesive for wet mixing to obtain paste, adding the bonding agent and the mass ratio of the raw materials is 25:75-30:70; (iii) flaking, milling, screw extrusion forming: placing the paste in a rolling machine for flaking, flaking, drying, then using Raymond mill to particles of 2 mm by the tube into a spiral extruder heating cylinder by at most 180 degrees C for preheating treatment, then performing screw extrusion to obtain semi-finished product, (iv) roasting the green product in under the condition of isolating air in the nitrogen furnace for heat treatment to obtain the roasted, (v) dipping metal: introducing the roasted into pre-heating in the graphite groove processed into sealed dipping tank, and vacuumizing, when the vacuum degree is 0.00 Mpa, injecting the high temperature water in the soaking tank, and pressurizing dipping treatment to obtain metal dipped material, and (vi) mechanical processing and bonding assembly.