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Preparation method of aircraft carbon/carbon composite brake disc friction couple

A technology of carbon composite materials and frictional duality, which is applied in the direction of brake discs, etc., can solve the problems of brake vibration and howling sound, insignificant shock absorption effect, large fluctuation of braking torque, etc., and achieve small brake pressure-torque gain and implementation Simple and convenient, smooth and reliable braking effect

Active Publication Date: 2016-02-03
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the carbon / carbon composite brake discs prepared in the prior art, the brake torque fluctuations are large, the brakes have serious vibrations and howling noises, and the brake discs have low service life, or deformation and warping, and the shock absorption effect is not obvious. Insufficient, the present invention proposes a kind of preparation method of aircraft carbon / carbon composite brake disc friction couple

Method used

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  • Preparation method of aircraft carbon/carbon composite brake disc friction couple
  • Preparation method of aircraft carbon/carbon composite brake disc friction couple
  • Preparation method of aircraft carbon/carbon composite brake disc friction couple

Examples

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Embodiment 1

[0029] This embodiment is a method for preparing an aircraft carbon / carbon composite brake disc friction couple, and the brake disc friction couple includes a moving disc and a static disc. The specific preparation process is:

[0030] Step 1, prepare the moving disk.

[0031] The process of preparing the moving disk is to sequentially perform the first heat treatment, the first CVD deposition, rough machining, intermediate heat treatment, the second CVD deposition, final heat treatment and finishing on the entire needle-punched carbon felt of the moving disk, specifically:

[0032] The whole needle-punched carbon felt of the moving disk is placed in a high-temperature furnace for the first heat treatment. The high-temperature furnace is evacuated to a furnace pressure of ≤500Pa, and the pressure is maintained for 10 hours. When the furnace pressure is ≤1.5KPa, the power is turned on, and the high-temperature heat treatment furnace is evacuated to a furnace pressure of ≤500Pa...

Embodiment 2

[0050] This embodiment is a method for preparing an aircraft carbon / carbon composite brake disc friction couple, and the brake disc friction couple includes a moving disc and a static disc. The specific preparation process is:

[0051] Step 1, prepare the moving disk.

[0052] The process of preparing the moving disk is to sequentially perform the first heat treatment, the first CVD deposition, rough machining, intermediate heat treatment, the second CVD deposition, final heat treatment and finishing on the entire needle-punched carbon felt of the moving disk, specifically:

[0053] The whole needle-punched carbon felt of the moving disk is placed in a high-temperature furnace for the first heat treatment. The high-temperature furnace is evacuated to a furnace pressure of ≤500Pa, and the pressure is maintained for 10.5 hours. When the furnace pressure is ≤1.5KPa, the power is turned on, and the high-temperature heat treatment furnace is evacuated to a furnace pressure of ≤500...

Embodiment 3

[0071] This embodiment is a method for preparing an aircraft carbon / carbon composite brake disc friction couple, and the brake disc friction couple includes a moving disc and a static disc. The specific preparation process is:

[0072] Step 1, prepare the moving disk.

[0073] The process of preparing the moving disk is to sequentially perform the first heat treatment, the first CVD deposition, rough machining, intermediate heat treatment, the second CVD deposition, final heat treatment and finishing on the entire needle-punched carbon felt of the moving disk, specifically:

[0074] The whole needle-punched carbon felt of the moving disk is placed in a high-temperature furnace for the first heat treatment. The high-temperature furnace is evacuated to a furnace pressure of ≤500Pa, and the pressure is maintained for 10.5 hours. When the furnace pressure is ≤1.5KPa, the power is turned on, and the high-temperature heat treatment furnace is evacuated to a furnace pressure of ≤500...

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Abstract

The invention discloses a manufacturing method of a carbon / carbon composite material brake disk friction pair for planes. The carbon / carbon composite material brake disk friction pair is made by means of deposition through different deposition gas sources, wherein a static disk is made by depositing mixed gas of propylene gas and nitrogen gas; a movable disk is made by depositing mixed gas of natural gas and dimethylmethane gas. The obtained static disk and movable disk are arranged in a brake device in sequence according to the assembly requirement of a plane wheel brake device, and each movable disk and each static disk form a friction pairs. The brake disk made by depositing a mixed gas source of propylene gas and nitrogen gas taken as a static disk, and a carbon disk made by depositing a mixed gas source of natural gas and dimethylmethane gas is taken as a movable disk to construct a friction pair, thereby improving brake pressure-torque gain and keeping the gain in a reasonable range. Moreover, a hard disk and a soft disk are arranged as a pair on the surface of the material, and a friction surface is worn uniformly and is smooth and flat in a braking process, thereby ensuring the output of a large torque, effectively lowering the brake vibration magnitude and improving the convergence of brake vibration.

Description

technical field [0001] The invention relates to the field of aircraft brake devices, in particular to a method for manufacturing a brake disc for changing the friction and vibration characteristics of the aircraft brake device. Background technique [0002] Domestic general aircraft carbon brake device friction couple includes a moving disc and a static disc, and most of them are carbon / carbon composite brake discs made of propylene gas deposition or natural gas deposition process. The friction coefficient of the carbon / carbon composite brake disc produced by the propylene vapor deposition process is between 0.2 and 0.25 under normal conditions, the linear wear rate is 0.014 μm / surface, and the pressure-torque gain is small. However, the friction coefficient of the carbon / carbon composite brake disc produced by the natural gas deposition process is between 0.28 and 0.55, the linear wear rate exceeds 0.02 μm / surface, and the pressure-torque gain is relatively large. Especial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/12C04B35/83
Inventor 田广来赵文庆李柯润周蕊张艺
Owner XIAN AVIATION BRAKE TECH
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