Preparation method of carbon-ceramic brake disc
A technology of brake discs and carbon ceramics, applied in mechanical equipment, friction linings, etc., can solve the problems of high material hardness, increased cost of brake discs, tool loss, etc., and achieve the goal of simplifying the processing process, shortening the processing cycle, and reducing production costs Effect
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[0035] Example 1
[0036] A preparation method of a carbon-ceramic brake disc includes the following steps:
[0037] (1) Preparation of carbon fiber preform
[0038] Use Toray T700-12K carbon fiber bundle to prepare unidirectional non-woven fabric and short fiber mesh, and then press 0° non-woven fabric, short fiber mesh, and 90° non-woven fabric to circulate layering to 1cm, then needling, then Repeat the above steps to prepare a carbon fiber preform with a size of 40cm*40cm*3cm, and ensure the density of the carbon fiber preform is 0.45g / cm 3 , 14-16 layers / cm.
[0039] (2) Preparation of C / C composites by chemical vapor deposition
[0040] Put the carbon fiber preform into a CVI furnace for isothermal and pressure chemical vapor deposition, the deposition temperature is 1100℃, the deposition gas is natural gas and ethylene, the natural gas flow is 80SLM, the ethylene gas is 40SLM, the deposition time is 340h, and the density is 1.40g / cm 3 C / C composite materials.
[0041] (3) Proces...
Example Embodiment
[0047] Example 2
[0048] A method for preparing a carbon-ceramic brake disc includes the following steps:
[0049] (1) Preparation of carbon fiber preform
[0050] Use Toray T700-12K carbon fiber bundle to prepare unidirectional non-woven fabric and short fiber mesh, and then press 0° non-woven fabric, short fiber mesh, and 90° non-woven fabric to circulate layering to 1cm, then needling, then Repeat the above steps to prepare a carbon fiber preform with a size of 40cm*40cm*3cm, and ensure the density of the carbon fiber preform is 0.45g / cm 3 , 14-16 layers / cm.
[0051] (2) Preparation of C / C composite material by chemical vapor deposition
[0052] Put the carbon fiber preform into a CVI furnace for chemical vapor deposition. The deposition temperature is 1100℃. The deposition gas is natural gas and ethylene. The flow rate of natural gas is 80SLM, the ethylene gas is 40SLM, and the deposition time is 340h. The density is 1.40g / cm 3 C / C composite materials.
[0053] (3) Process the C / ...
Example Embodiment
[0059] Example 3
[0060] A method for preparing a carbon-ceramic brake disc includes the following steps:
[0061] (1) Preparation of carbon fiber preform
[0062] Toray T700-12K carbon fiber bundle is used to prepare unidirectional non-woven fabric and short fiber mesh, and then press 0° non-woven fabric, short fiber mesh, and 90° non-woven fabric to circulate layering to 1cm, then needling, then Repeat the above steps to prepare a carbon fiber preform with a size of 40cm*40cm*3cm, and ensure the density of the carbon fiber preform is 0.45g / cm 3 , 14-16 layers / cm.
[0063] (2) Preparation of C / C composite material by chemical vapor deposition
[0064] Put the carbon fiber preform into a CVI furnace for chemical vapor deposition. The deposition temperature is 1100℃. The deposition gas is natural gas and ethylene. The natural gas flow rate is 80SLM, ethylene gas is 40SLM, and the deposition time is 340h. The density is 1.4g / cm 3 C / C composite materials.
[0065] (3) Process the C / C co...
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