Method for rapidly preparing carbon/carbon composite material brake disc

The invention discloses a method for quickly preparing a carbon/carbon composite material brake disc, which comprises the following steps of: overlapping and stacking carbon fiber preforms through an internal heat source heater, effectively enabling gas to flow from the outer diameter to the inner diameter in a limited area of M + 1 deposition chambers through the design of a tool, and discharging the gas out of a furnace through a central pipeline, according to the method, uniform concentration distribution of gas in each limited area can be ensured, so that the densification efficiency is improved, hole sealing is avoided, the consistency of a formed carbon structure is better ensured, meanwhile, a central heating body is adopted, a carbon fiber preform forms a thermal gradient from inside to outside, and a furnace wall gas inlet nozzle is arranged in a matched manner; according to the gas inlet nozzle, the degree of thermal decomposition and deposition of gas at the outer diameter of the carbon fiber prefo