▎ 摘　　要

NOVELTY - The method involves providing vacuum chamber (2) with platform (1) and hinge joint of vacuum chamber cover. The vacuum chamber platform is provided with air inlet hole. An electromagnetic oscillator (7) is set firmly joint with the electromagnetic silicon steel sheet plate. The pressure plate (8) is embedded around the sealing ring (9), and is provided with a pressure plate bracket. The electromagnetic oscillator is fixedly installed on vacuum chamber platform, and a spring is connected with the locating baffle with limited amplitude. USE - Vacuum pressurizing method for preparing powdery graphene film. ADVANTAGE - The structure is simplified. The mass production is achieved. The product performance characteristic is improved. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view illustrating the vacuum pressurizing process for preparing powdery graphene film. Platform (1) Vacuum chamber (2) Electromagnetic oscillator (7) Pressure plate (8) Sealing ring (9)