▎ 摘　　要

NOVELTY - Performing wear-resistant double suction pump impeller surface treatment process involves roughening the surface of the double suction pump impeller, and then immersing it in an ethanol solution having a mass fraction of 95%. The mass ratio of graphene and carbon nanotubes are (1-2):1 and then put into distilled water, and after preliminary pulverization by ultrasonication, mixing and stirring at room temperature for 4-6 minutes to obtain the treated mixture. The obtained treated mixture is subjected under inert gas protection environment increasing the temperature to 40-60 degrees C at a rate of 2-4 degrees C/minute, and then holding for 4-6 hours, and then naturally cooling to room temperature to obtain a mixed solution. The cubic boron nitride is pulverized to a particle size of 3-6 mu m, and the cubic boron nitride is put into the stirred tank, and slowly added according to the mass ratio of cubic boron nitride and distilled water of 1:(2-7). USE - Method for performing wear-resistant double suction pump impeller surface treatment process. ADVANTAGE - The method enables to perform wear-resistant double suction pump impeller surface treatment process, which improves compactness of the surface of the double suction pump impeller, but also further optimizes the stress state between the particles and the interface, effectively improves strength and toughness of the coating, and ensures double suction pump impeller, and increases the service life. DETAILED DESCRIPTION - The distilled water and coupling agent are mixing, and stirring for 10-16 minutes to obtain composite. The mixed solution and obtained composite are poured into the stirred tank, stirring uniformly, the total mass of the graphene and the carbon nanotubes and the cubic boron nitride in a mass ratio of 1: (2-3) to get the modified intermediate. The modified intermediate is added to an atomizer for spray drying treatment, in which a gaseous carbon source is blown under the action of a shielding gas, and the drying temperature is 70-80 degrees C, the pressure of the gaseous carbon source is 20-22 bar, the flow rate is 400-600 slpm, forming a spray material. The double suction pump impeller is placing in the treatment kiln, heating the furnace to 30-35 degrees C for 100-120 minutes, and pre-heating the double suction pump impeller to obatin spray material. The spray material prepared is mixed with a mass ratio of the spray material and distilled water to a ratio of 1: (30-35) to form a spray, and is heated through annealing to 600-650 degrees C in a protective gas state, and then loading 25% of the gaseous carbon source from the shielding gas. The double suction pump impeller is placing in a high temperature furnace, simultaneously turning on the atomizer, and protecting the gas into the atomizer. The atomized fine component is brought to the surface of the double suction pump impeller in the high temperature furnace, and is kept for 1-12 hours, so that the sprayed material is closely arranged on the surface of the double suction pump impeller to obtain wear resistant double suction pump impeller.