Friction material and process for manufacturing aircraft braking disc made from same

A manufacturing process and friction material technology, applied in the direction of friction linings, mechanical equipment, other chemical processes, etc., can solve the problems of short service life, wear or damage, poor wear matching of brake pairs, etc., to improve heat resistance, improve Service life and effect of improving the degree of wear

Active Publication Date: 2013-12-18
SHANTOU NORTHWEST AVIATION ARTICLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For many years, the Boeing 737, 747, 767 and other large and medium-sized aircraft introduced by domestic airlines have basically relied on imports of brake pairs, one of the main consumable parts (Honeywell and Goodrich Corporation of the United States), and the brake pairs developed by domestic units occupy a large market share. Less, and there are defects such as short service life, poor wear matching of brake pairs (friction material will seriously wear or damage the friction steel)

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  • Friction material and process for manufacturing aircraft braking disc made from same
  • Friction material and process for manufacturing aircraft braking disc made from same

Examples

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Effect test

Embodiment 1

[0032] A kind of friction material used for aircraft brake pads in the present embodiment, the percentage by weight of each component is: copper 72%, iron 6%, aluminum 2%, tin 3%, nickel 1%, kyanite 3%, Boron nitride 2%, graphite 8%, molybdenum disulfide 3%.

[0033] The manufacturing process of brake pads is as follows:

[0034] After weighing the above-mentioned components according to the percentage of the formula, put the powders of copper, iron, aluminum, tin, nickel and molybdenum disulfide into the V-shaped mixing cylinder. After first machine mixing for 1 hour, then kyanite and boron nitride powder were poured into the mixing cylinder, and machine mixing was continued for 1 hour, and then 0.7% of the total weight of ingredients was added to the mixture. # machine oil, then machine-mix for 1 hour, then pour the graphite powder into the V-shaped mixing barrel, and machine-mix for 4 hours; press the evenly mixed mixture to form a powder compact with a pressing pressure o...

Embodiment 2

[0036] A kind of friction material used for aircraft brake pads in this embodiment, the weight percent of each component is: copper 68%, iron 7%, aluminum 2%, tin 3%, nickel 1%, kyanite 4%, Boron nitride 3%, graphite 10%, molybdenum disulfide 2%.

[0037] The manufacturing process of brake pads is as follows:

[0038] After weighing each component according to the formula percentage, put the powders of copper, iron, aluminum, tin, nickel and molybdenum disulfide into the V-shaped mixing barrel, first mix by machine for 1 hour, then add kyanite and boron nitride powder Pour into this mixing cylinder and continue machine mixing for 1 hour, then add 0.5% of the total weight of ingredients in the mixture after 10 # machine oil, and then machine-mixed for 1 hour, then pour graphite powder into the V-shaped mixing barrel, and machine-mix for 4 hours; press the uniformly mixed mixture to form a powder compact with a pressing pressure of 370MPa; use 30CrMoA with a thickness of 1.5-1....

Embodiment 3

[0040] A kind of friction material used for aircraft brake pads in the present embodiment, the percentage by weight of each component is: copper 62%, iron 10%, aluminum 3%, tin 3%, nickel 1%, kyanite 6%, Boron nitride 2%, graphite 12%, molybdenum disulfide 1%.

[0041] The manufacturing process of brake pads is as follows:

[0042] After each component is weighed according to the formula percentage, put the copper, iron, aluminum, tin, nickel and molybdenum disulfide powders into the V-shaped mixing cylinder, first mix by machine for 1 hour, then pour the kyanite and boron nitride powder Put into this mixing cylinder and continue machine mixing for 1 hour, then add 0.6% of the total weight of ingredients in the mixture after 10 # machine oil, and then machine-mixed for 1 hour, then pour the graphite powder into the V-shaped mixing barrel, and machine-mix for 4 hours; the uniformly mixed powder is formed into a powder compact with a pressing pressure of 350MPa; the thickness i...

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Abstract

The invention relates to a friction material which comprises the following components in percentage by weight: 62-72% of copper, 6-15% iron, 2-6% of aluminum, 3-8% of tin, 1-5% of nickel, 3-10% of cyanite (Al2O3.SiO2), 2-7% of boron nitride, 8-16% of graphite and 1-4% of molybdenum disulfide. The process for manufacturing an aircraft braking disc made from the friction material comprises the following steps: mixing a mixture of the friction material, pressing and moulding, preparing a steel back, and pressurizing and sintering the aircraft braking disc. Compared with the prior art, the mechanical performance, the physical performance, the friction and wear resistance, the use reliability and the service life of the aircraft braking disc made from the friction material reach or exceed those of the imported aircraft braking pair, and the aircraft braking disc made from the friction material can completely meet the use requirement of the Boeing 737 aircraft.

Description

technical field [0001] The invention relates to a friction material and an aircraft brake pad manufacturing process using the friction material, more specifically to a friction material for large and medium-sized transportation aircraft brake pads and an aircraft brake pad manufacturing process using the friction material . Background technique [0002] The characteristics of modern large and medium-sized transport aircraft brake devices are: high braking efficiency, safe and reliable work, long service life, light weight, small size and compact structure. The key technology that embodies the function of the brake device is the performance of the material of the friction pair (the general term for friction material and dual material). At present, there are basically two types of friction pair materials widely used in large and medium-sized transport aircraft in the world, namely cermet friction materials-steel and carbon / carbon composite materials. [0003] Although carbon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14C22C9/00B22F7/08F16D69/02
Inventor 陈贤海林虹陈佳纯
Owner SHANTOU NORTHWEST AVIATION ARTICLES
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