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Iron-based powder metallurgy friction material and preparation method thereof

A technology of iron-based powder metallurgy and friction materials, which is applied in the field of materials, can solve problems such as use and description of test working conditions, and achieve the effects of small deformation, low density, and low expansion rate

Active Publication Date: 2015-03-11
XIAN AVIATION BRAKE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wear amount obtained on the MM-1000 friction and wear testing machine is between 0.006-0.0094, but it does not explain its use and test conditions

Method used

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  • Iron-based powder metallurgy friction material and preparation method thereof
  • Iron-based powder metallurgy friction material and preparation method thereof
  • Iron-based powder metallurgy friction material and preparation method thereof

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Embodiment Construction

[0069] This embodiment is an iron-based powder metallurgy friction material. The iron-based powder metallurgy friction material consists of 64% iron powder, 9% copper powder, 3% manganese powder, 10% graphite powder, 3% silicon carbide powder, 2% molybdenum disulfide powder, 4% Silica powder, 3% aluminum oxide powder and 2% precipitated barium sulfate powder, the percentages are all mass percentages. The iron powder is FHY200, Fe≥98%, and the standard GB / T4136-94 is implemented. The copper powder is FTD1, Cu≥99.8%, and the standard GB / T5246-2007 is implemented. The manganese powder is -100~+300 mesh DJMnD, Mn≥99.7%, and implements the standard YB / T051-2003. The graphite powder is +80 mesh scale-like, with a content of C ≥ 99.99%, and the standard GB / T3518-95 is implemented. The silicon dioxide powder is -100 to +200 mesh, and the aluminum oxide powder is -100 to +250 mesh calcined α type. The silicon carbide powder is green silicon carbide of -120 mesh, and the standard GB...

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Abstract

The invention provides an iron-based powder metallurgy friction material and a preparation method thereof. The iron-based powder metallurgy friction material is prepared from iron powder, copper powder, manganese powder, graphite powder, silicon carbide powder, molybdenum disulfide powder, silicon dioxide powder, aluminum oxide powder and precipitated barium sulfate powder; the system matching effects of an iron alloy matrix, a lubricating component, a solid friction component and the like are developed, and the high-performance iron-based powder metallurgy friction material which has excellent mechanical strength and can be used at a low speed and within a wide pressure range can be obtained. The friction coefficient of the iron-based powder metallurgy friction material is greater than 0.32, while the abrasion loss of the same is less than or equal to 0.0005mm per face at each time.

Description

technical field [0001] The invention relates to the field of materials, in particular to an iron-based powder metallurgy friction material and a preparation method thereof. Background technique [0002] The brake pair for the flap protection device of a transport aircraft is a consumable part. The friction material of the static friction plate was originally made of American C94500 high-lead tin bronze material, but this material is a foreign purchase restricted material, which is difficult to purchase. And with the aggravation of the use conditions in the later period, some defects appeared in its friction and wear performance. For example, under the conditions of low speed and high specific pressure, the material wears out and the coefficient of friction is low. [0003] The existing domestic iron-based powder metallurgy friction material CN200710106016.0 is mainly used in the braking of aircraft, engineering vehicles and artillery with medium and high speed and medium sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C38/16B22F9/22B22F9/04B22F3/16
Inventor 李利刘联军卢宏裴广林张婧琳
Owner XIAN AVIATION BRAKE TECH
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