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Copper-based powder metallurgy friction material for high-speed linear brake and preparation method thereof

A friction material and powder metallurgy technology, applied in the field of copper-based powder metallurgy friction materials for high-speed linear brakes and their preparation, can solve the problems of inability to meet the requirements of high energy load, high speed, high impact force and corrosion resistance, etc. The effect of small deformation, good wear resistance and low expansion rate

Active Publication Date: 2019-04-16
XIAN AVIATION BRAKE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to overcome the deficiencies in the prior art that cannot meet the requirements of high energy load, high speed, high impact force and corrosion resistance working conditions, the present invention proposes a copper-based powder metallurgy friction material for high-speed linear braking and its preparation method

Method used

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  • Copper-based powder metallurgy friction material for high-speed linear brake and preparation method thereof
  • Copper-based powder metallurgy friction material for high-speed linear brake and preparation method thereof
  • Copper-based powder metallurgy friction material for high-speed linear brake and preparation method thereof

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Embodiment Construction

[0034] The invention is a copper-based powder metallurgy friction material for high-speed linear braking, which consists of 50-60% electrolytic copper powder, 8-1% reduced iron powder, 8-10% graphite, and 2-5% silicon-chromium alloy , 2-5% molybdenum disulfide, 2-5% silicon dioxide, 1-3% lanthanum oxide, 3-5% ferrochromium and 8-12% copper fiber. The stated percentages are mass percentages.

[0035] The present invention specifically illustrates its technical scheme through 5 embodiments. The components of each embodiment are shown in Table 1:

[0036] The components of each implementation example proposed by the present invention are shown in Table 1; the percentages of each component are mass percentages.

[0037] Table 1

[0038]

[0039] The copper content in the electrolytic copper powder is ≥99.8%, and the implementation standard is GB / T5246-2007.

[0040] The content of Fe in the reduced iron powder is more than or equal to 98.5%, and the implementation standard ...

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Abstract

The invention discloses a copper-base powder metallurgy friction material for high-speed linear brake and a preparing method of the copper-base powder metallurgy friction material. The copper-base powder metallurgy friction material is composed of electrolysis copper powder, reduced iron powder, graphite, a silicon-chromium alloy, molybdenum disulfide, silicon dioxide, lanthanum oxide, ferrochromium and copper fiber. The percent is the mass percent. Through adjustment on the formula of the copper-base powder metallurgy brake material, the lanthanum oxide is used for modifying the ferrochromium powder and the silicon-chromium alloy to enhance friction components, the chemical reaction is accelerated with carboxymethylcellulose as a particle bonding agent, brake materials meeting the requirements for high energy loads, high speed, high impact force, corrosion resistance and other work conditions are obtained, and the beneficial effects of the stable friction coefficient and good corrosion resistance are achieved. Through the test, the average friction coefficient mucp is larger than 0.35, the friction material linear abrasion loss is smaller than or equal to 0.0195 mm / face.time, and the copper-base friction material is suitable for high-speed linear brake.

Description

technical field [0001] The invention relates to the field of powder metallurgy copper-based brake materials, in particular to a copper-based powder metallurgy friction material for high-speed linear brakes and a preparation method thereof. Background technique [0002] High-speed linear braking refers to a braking form that has a large mechanical load, high braking speed, and relatively linear motion with the frictional pair. The higher the requirements. [0003] Compared with the actual application of disc brakes and drum brakes, the instantaneous friction temperature of linear brakes is very high, the load per unit volume is larger, and the impact force of high-speed linear motion is also very strong. Therefore, the thermal conductivity, oxidation resistance, strength, friction coefficient stability, corrosion resistance, and frost resistance of friction materials are all required to be high. [0004] Because of its good thermal conductivity, self-lubricating properties,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C47/14C22C49/02B22F9/22C22C49/14C22C111/00
CPCB22F9/22C22C47/14C22C49/02C22C49/14
Inventor 李利刘联军王治国吴其俊张伟车明超
Owner XIAN AVIATION BRAKE TECH
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