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Manufacturing method of carbon/carbon composite material brake disk friction pair for planes

A technology of carbon composite materials and frictional duality, which is applied in the direction of brake discs, etc., can solve problems such as brake vibration and howling sound, large fluctuations in braking torque, and inconspicuous shock absorption effects, etc., to achieve reduced brake vibration and smooth braking Reliable, easy-to-implement effect

Active Publication Date: 2014-08-13
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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  • Manufacturing method of carbon/carbon composite material brake disk friction pair for planes
  • Manufacturing method of carbon/carbon composite material brake disk friction pair for planes
  • Manufacturing method of carbon/carbon composite material brake disk friction pair for planes

Examples

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Effect test

Embodiment 1

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

[0030] Step 1. Prepare the moving disc.

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

[0032] Place the integral needle-punched carbon felt of the moving disc in a high-temperature furnace for the first heat treatment. The high-temperature furnace is evacuated until the furnace pressure is ≤500Pa, and the pressure is maintained for 10h. When the furnace pressure is ≤1.5KPa, the power is turned on, and the high-temperature heat treatment furnace is evacuated ...

Embodiment 2

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

[0051] Step 1. Prepare the moving disc.

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

[0053] Place the integral needle-punched carbon felt of the moving plate in a high-temperature furnace for the first heat treatment. The high-temperature furnace is evacuated until the furnace pressure is ≤500Pa, and the pressure is maintained for 10.5h. When the furnace pressure is ≤1.5KPa, the power is turned on, and the high-temperature heat treatment furnace is evacuat...

Embodiment 3

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

[0072] Step 1. Prepare the moving disc.

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

[0074] Place the integral needle-punched carbon felt of the moving plate in a high-temperature furnace for the first heat treatment. The high-temperature furnace is evacuated until the furnace pressure is ≤500Pa, and the pressure is maintained for 10.5h. When the furnace pressure is ≤1.5KPa, the power is turned on, and the high-temperature heat treatment furnace is evacuat...

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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 brake discs for changing the friction characteristics and vibration characteristics of aircraft brake devices. Background technique [0002] The friction duality of carbon brake devices for domestic general aircraft includes a moving disc and a static disc, and most of them are carbon / carbon composite brake discs made by propylene deposition or natural gas deposition. The carbon / carbon composite brake disc made by the propylene gas deposition process has a friction coefficient between 0.2 and 0.25 under normal conditions, a linear wear rate of 0.014 μm / surface. The number of landings, and a small pressure-torque gain. The friction coefficients of carbon / carbon composite brake discs made by natural gas deposition process are all between 0.28 and 0.55, the linear wear rate exceeds 0.02μm / surface. The number of landings and the pressure-torque gain is rela...

Claims

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Application Information

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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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