Carbon/carbon composite material densification method, stock column tool and assembling method

The invention belongs to the technical field of carbon material preparation, and particularly discloses a carbon/carbon composite material densification method, a stock column tool and an assembling method.The method comprises the steps that a base, a tray, an air inlet splitter plate and a plurality of crucible side preforms are subjected to stock column assembling according to a preset sequence; after the assembled stock column is lifted into a deposition furnace through a lifting appliance to be sealed, a first deposition process is executed according to a preset first gradient heating and pressurizing process, after the first deposition process is executed to reach a first time threshold value, the stock column is cooled and taken out, and surface impurities are removed; and carrying out stock column assembly on the base, the tray, the air inlet splitter plate and the plurality of crucible upper preforms subjected to impurity cleaning according to a preset sequence, carrying out a second-time deposition p