▎ 摘　　要

NOVELTY - Graphene and copper and/or its alloy powder are mixed, to obtain graphene dispersion solution. Obtained solution is ultrasonically processed, ball-milled, dried, degassed and hot-isostatically pressed to obtain cylindrical prefabricated ingot. Resultant material is processed in inert atmosphere, melted and obtained copper and/or copper alloy melt is processed to obtain cylindrical preform ingot. Obtained material is air-cooled to obtain copper-based alloy ingot. Resultant material is subjected to homogenization treatment and hot-extruded to obtain copper-based alloy bar. USE - Manufacture of copper-based alloy bar (claimed). ADVANTAGE - The method efficiently and economically provides copper-based alloy bar with high productivity, by simple method. DETAILED DESCRIPTION - 3-10 Wt.% graphene and remainder of copper and/or its alloy powder are mixed, to obtain graphene dispersion solution. The obtained solution is placed in ultrasonic wave oscillator, stirred, placed in ball mill, milled for 20-40 hours, stirred at 50-60 degrees C and dried. The obtained powder having diameter of 80-120 mm, is added to stainless steel sheath having height of 85-300 mm. The wrap is heated for 2-4 hours and vacuum-degassed at 700-750 degrees C in the pressure of 1x 10-3 Pa. The resultant material is subjected to hot-isostatic pressing process at 700-900 degrees C in the pressure of 100-200 MPa to obtain cylindrical prefabricated ingot. The resultant material is processed in inert atmosphere, and melted at 30-80 degrees C to obtain copper and/or copper alloy melt. The obtained melt is processed in crucible under inert atmosphere, to obtain cylindrical preform ingot. The obtained material is air-cooled under inert atmosphere at room temperature to obtain copper-based alloy ingot. The resultant material is subjected to homogenization treatment at 700-900 degrees C, heat-preserved for 24-48 hours, and hot-extruded to obtain copper-based alloy bar.