▎ 摘　　要

NOVELTY - Preparation of graphene-reinforced copper or copper alloy bar involves mixing nano copper powder or copper alloy powder, graphene and nano titanium powder; and placing mixed material in 99.7% absolute ethyl alcohol, ultrasonic vibrating for 30-60 minutes, electromagnetic stirring composite energy field scattered graphene, distributing graphene in copper or copper alloy substrate, obtaining mixed slurry, placing mixed slurry in ball mill, ball milling for 5-12 hours at 200-500 revolutions/minute, drying at 80-150 degrees C for 2-10 hours, processing to get composite powder, and cold-drying. USE - Method for preparing graphene-reinforced copper or copper alloy bar (claimed). ADVANTAGE - The method has high surface energy good structure and performance, simple technical process, and low cost. DETAILED DESCRIPTION - Preparation of graphene-reinforced copper or copper alloy bar comprises mixing nano copper powder or copper alloy powder, graphene and nano titanium powder; and placing mixed material in 99.7% absolute ethyl alcohol, ultrasonic vibrating for 30-60 minutes, electromagnetic stirring composite energy field scattered graphene, distributing graphene in copper or copper alloy substrate, obtaining mixed slurry, placing mixed slurry in ball mill, ball milling for 5-12 hours at 200-500 revolutions/minute, drying at 80-150 degrees C for 2-10 hours, processing to get composite powder, cold-drying isostatic alloy stock for 30-180 seconds, and hot extruding alloy blank at 800-1000 degrees C.