A jig for preparing ultra-thin carbon/carbon composite panels
A carbon composite material and fixture technology, which is applied in the field of fixtures for preparing ultra-thin carbon/carbon composite panels, can solve the problem of ineffective carburization, failure to meet the density requirements of ultra-thin carbon/carbon composite panels, and affecting the uniform density of components Uniformity and other issues, to achieve the effect of uniform chemical vapor carburizing and uniform density
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Embodiment 1
[0033] See attached figure 2 , a fixture for preparing an ultra-thin carbon / carbon composite material panel, the fixture is a hollow graphite plate 1, a microporous air guide plate 2, an ultra-thin carbon / carbon composite material blank 3, a microporous air guide plate 2, a hollowed out Graphite plates 1 are stacked in sequence, and the hollow graphite plates on both sides are clamped along the stacking direction;
[0034] The thickness of the hollow graphite plate 1 is 30mm, and the hollow area accounts for 50% of the total area of the graphite plate; the thickness of the ultra-thin carbon / carbon composite material blank is 0.2mm, and the carbon fiber density is 0.8g / cm 3 ;
[0035] Use bolts to pass through the bolt holes arranged on the hollow graphite plate, and fasten with nuts.
[0036] The microporous air guide plate 2 is prepared according to the following scheme:
[0037] The thickness is 1mm, the density is 0.03g / cm 3 T700 carbon fiber mesh tire needle punched...
Embodiment 2
[0044] The difference between this embodiment and Embodiment 1 is that the thickness of the hollow graphite plate 1 is 35mm, and the hollow area accounts for 60% of the total area of the graphite plate; the thickness of the ultra-thin carbon / carbon composite material blank is 0.5mm, and the carbon fiber density is 0.5g / cm 3 ;
[0045] Its microporous air guide plate 2 adopts the following scheme to prepare:
[0046] The thickness is 3mm, the density is 0.03g / cm 3 T700 carbon fiber mesh tire needle punched to a thickness of 8mm and a density of 0.2g / cm 3 The flat felt is densified to 0.3g / cm by chemical vapor carburizing 3 , After hardening, carry out graphitization treatment, and machine to obtain a 6mm thick microporous air guide plate;
[0047] Chemical vapor carburizing densification process parameters are: CH 4 It is carbon source gas, the furnace temperature is controlled at 1000°C, the furnace pressure is 3kPa, and the furnace is released after cumulative chemica...
Embodiment 3
[0052] The difference between this embodiment and Embodiment 1 is that the thickness of the hollow graphite plate 1 is 40mm, and the hollow area accounts for 55% of the total area of the graphite plate; the thickness of the ultra-thin carbon / carbon composite material blank is 0.8mm, and the carbon fiber density is 0.4g / cm 3 ;
[0053] The microporous air guide plate 2 in the fixture is prepared by the following scheme:
[0054] The thickness is 6mm, the density is 0.03g / cm 3 T700 carbon fiber mesh tire needle punched to a thickness of 12mm and a density of 0.1g / cm 3 The flat felt is densified to 1.4g / cm by chemical vapor carburizing 3 1. After hardening, carry out graphitization treatment, and machine to obtain a microporous air guide plate with a thickness of 10mm;
[0055] Chemical vapor carburizing densification process parameters are: CH 4 It is carbon source gas, the furnace temperature is controlled at 1200°C, the furnace pressure is 10kPa, and the furnace is rel...
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