▎ 摘　　要

NOVELTY - A high performance magnesium-based composite material component is prepared by spraying carboxylated graphene dispersion on upper and lower surfaces of surface-treated first magnesium alloy plate, placing surface-sprayed five magnesium alloy plates into mold of hot-pressing sintering furnace in sequence, heating furnace, taking out hot-pressed sintered magnesium alloy block from mold of hot-pressing sintering furnace, cutting into rod-shaped magnesium alloy particles, adding into feeding hopper of spiral conveyor, conveying into feeding pipe of screw conveyor by feeding hopper of screw conveyor, shearing and stirring rod to obtain semi-solid magnesium alloy sizing agent; injecting into cylinder of indirect extrusion casting mold, and holding pressure to obtain magnesium-based composite material component; and taking out, placing on wooden plate, air cooling, cleaning each portion and periphery, cleaning with absolute ethanol, washing, drying, detecting, analyzing, and characterizing. USE - The method is used for preparing high performance magnesium-based composite material component. ADVANTAGE - The method is advanced in process, and has precise and accurate data. DETAILED DESCRIPTION - A high performance magnesium-based composite material component is prepared by: (A) adding 60000 mL deionized water into polyvinyl alcohol liquid storage tank, heating to 80 degrees C, adding 1800 g polyvinyl alcohol, keeping temperature to stir for 1 hour, completely dissolving polyvinyl alcohol, cooling to room temperature to obtain polyvinyl alcohol solution, polishing surface of five pieces of magnesium alloy plate to make it clean using 2000 meshes sand paper, and cleaning surface of five pieces of magnesium alloy plate by absolute ethanol to make it clean; (B) opening surface treatment chamber, orderly placing five pieces of magnesium alloy plate into clamp in surface treatment chamber, numbering from upper to lower as first magnesium alloy plate, second magnesium alloy plate, third magnesium alloy plate, fourth magnesium alloy plate and fifth magnesium alloy plate, and sealing surface treatment chamber; (C) opening polyvinyl alcohol solution inlet valve of polyvinyl alcohol solution storage tank, injecting polyvinyl alcohol solution in polyvinyl alcohol solution storage tank into surface treatment chamber through liquid inlet pipe, completely soaking five pieces of magnesium alloy plate in polyvinyl alcohol solution, closing polyvinyl alcohol solution inlet valve, opening and adjusting first temperature controller inside surface treatment chamber, keeping temperature of polyvinyl alcohol solution in surface treatment chamber at 55 plus minus 2 degrees C, opening ultrasonic vibration table in surface treatment chamber, keeping temperature for 15 minutes, constant temperature vibration stirring for 45 minutes, and closing ultrasonic vibration table; (D) starting polyvinyl alcohol solution discharging valve on polyvinyl alcohol liquid storage tank, withdrawing polyvinyl alcohol solution in surface treatment chamber to polyvinyl alcohol solution storage tank through drain pipe, closing polyvinyl alcohol solution discharging valve, adding 60000 mL deionized water into deionized water storage tank, opening deionized water inlet valve on deionized water storage tank, injecting deionized water in deionized water storage tank into surface treatment chamber through liquid inlet pipe, soaking all five magnesium alloy plates in deionized water, and closing deionized water inlet valve; (E) adjusting first temperature controller, keeping temperature of deionized water in surface treatment chamber at 45 plus minus 2 degrees C, starting ultrasonic vibration table, vibration cleaning for 10 minutes, closing ultrasonic vibration table and first temperature controller, starting deionized water discharging valve on deionized water storage tank, withdrawing all deionized water in surface treatment chamber back to deionized water storage tank through drain pipe, closing deionized water drain valve, opening and adjusting dryer on surface treatment chamber, keeping temperature of surface treatment chamber at 80 plus minus 5 degrees C, heat preserving for 40 minutes, and drying five pieces of chamber magnesium alloy plate; (F) adding 20 g carboxylated graphene and 20000 mL deionized water into container, ultrasonic vibration and stirring for 1 hour to obtain carboxylated graphite dispersion, adding to upper and lower spraying machines of surface spraying chamber, opening surface treatment chamber and surface spraying chamber, transporting surface-treated first magnesium alloy plate from surface treatment chamber to surface spraying chamber using monorail crane, and sealing surface spraying chamber; (G) opening second temperature controller surface spraying chamber, keeping temperature of surface spraying chamber to 85 plus minus 1 degrees C, opening upper and lower spraying machines, keeping temperature for 15 minutes, spraying carboxylated graphene dispersion on upper and lower surfaces of surface-treated first magnesium alloy plate through nozzles of upper and lower spraying machines at pressure of 0.35 MPa, every 15 seconds and stopping spraying for 30 seconds, and closing upper and lower spraying machines; (H) adjusting second temperature controller, keeping temperature at surface spraying chamber at 65 plus minus 1 degrees C, closing second temperature controller, keeping temperature for 15 minutes, opening surface spraying chamber, taking out surface-sprayed first magnesium alloy plate from surface spraying chamber using monorail crane, placing on clean steel plate, cooling to room temperature, and surface spraying surface-treated second magnesium alloy plate, third magnesium alloy plate, fourth magnesium alloy plate and fifth magnesium alloy plate with carboxylated graphene; and (I) opening hot-pressing sintering furnace, placing surface-sprayed five magnesium alloy plates into mold of hot-pressing sintering furnace in sequence, pushing pressing plate of hot pressing sintering furnace by pressing head of hot-pressing sintering furnace to apply pressure to surface-sprayed five magnesium alloy plates at 30 MPa, sealing hot-pressing sintering furnace, extracting air in furnace, reducing pressure to 2 Pa, opening heater of hot-pressing sintering furnace, and heating furnace.