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Powder metallurgy friction body and manufacturing method thereof, powder metallurgy brake pad

A technology of powder metallurgy and manufacturing method, which is applied in the direction of friction linings, mechanical equipment, gear transmission mechanisms, etc., can solve the problems of friction material falling off, etc., and achieve the effects of improving service life, high feasibility, and improving product qualification rate

Active Publication Date: 2020-08-25
北京浦然轨道交通科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a powder metallurgy friction body and its manufacturing method, and a powder metallurgy brake pad. Slag, falling blocks, and friction material falling off as a whole, so as to improve the service life

Method used

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  • Powder metallurgy friction body and manufacturing method thereof, powder metallurgy brake pad
  • Powder metallurgy friction body and manufacturing method thereof, powder metallurgy brake pad
  • Powder metallurgy friction body and manufacturing method thereof, powder metallurgy brake pad

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Embodiment 1

[0027] An embodiment of the present invention provides a powder metallurgy friction body, including: a friction material layer composed of a matrix component, a lubricating component, and a friction component, and a skeleton adhesive for bonding the friction material layer and the metal skeleton together. material layer. The chemical properties and physical and mechanical properties of each component in the matrix component determine the performance and process characteristics of the powder metallurgy friction material to a large extent. The matrix component ensures the bearing capacity, thermal stability, wear resistance and high temperature resistance of the friction body. Ability to hold abrasive and lubricant particles while in operation. The role of lubricating components and friction components is mainly to keep the coefficient of friction stable.

[0028] Specifically, the above matrix components include: bronze powder, reduced iron powder, ferromanganese alloy powder ...

Embodiment 2

[0037] An embodiment of the present invention provides a method for manufacturing a powder metallurgy friction body, which is applied to the above powder metallurgy friction body. Such as figure 1 As shown, the manufacturing method of the powder metallurgy friction body includes:

[0038] Step 100, uniformly mixing components of the friction material layer to obtain a friction mixture.

[0039] Step 200, pressing the skeleton bonding material layer and the friction mixture to obtain a friction body assembly.

[0040] Step 300, sintering the friction body assembly to obtain a powder metallurgy friction body.

[0041] In the manufacturing method of the powder metallurgy friction body provided by the embodiment of the present invention, pressing the powder metallurgy friction body with a skeleton can improve the bonding force between the friction material and the skeleton, effectively prevent the friction body from falling off, and avoid the occurrence of dislocation between th...

Embodiment 3

[0071] An embodiment of the present invention provides a method for manufacturing a powder metallurgy friction body. The powder metallurgy friction body includes: a friction material layer composed of a matrix component, a lubricating component and a friction component, and a skeleton bonding material layer for bonding the friction material layer and the skeleton of the friction body together. The matrix components include: bronze powder, reduced iron powder, ferromanganese alloy powder and nanometer molybdenum trioxide. Lubricating components include: zinc sulfide and flake graphite; friction components include: titanium dioxide, zirconia, feldspar and zircon sand. The skeleton bonding material layer includes: bronze powder, reduced iron powder, manganese powder, molybdenum powder and tin powder.

[0072]The friction material layer in the powder metallurgy friction body contains the following raw materials in terms of mass fraction: the mass fraction of bronze powder is 45%,...

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Abstract

The invention discloses a powder metallurgy friction body and a manufacturing method thereof, and a powder metallurgy brake pad. The powder metallurgy brake pad has relatively strong wear-resisting performance, can solve the phenomena of dreg falling, chip falling and entire friction material fall-off of an existing friction body in the process of vehicle braking, and thereby improves the servicelife of the friction body. The powder metallurgy friction body comprises a friction material layer which is composed of a substrate element, a lubricating element and a friction element, and a skeleton bonding material layer which is used for bonding the friction material layer and a friction body skeleton; the substrate element comprises bronze powder, reduced iron powder, manganese-iron alloy powder and nano molybdenum trioxide; the lubricating element comprises zinc sulfide and crystalline flake graphite; the friction element comprises titanium dioxide, zirconium oxide, feldspar and zirconsand; and the skeleton bonding material layer comprises bronze powder, reduced iron powder, manganese powder, molybdenum powder and tin powder. The powder metallurgy friction body can manufacture thepowder metallurgy brake pad and the powder metallurgy brake pad is applied to the aspect of urban railway transportation.

Description

technical field [0001] The invention relates to the field of processing and manufacturing parts of transportation products, in particular to a powder metallurgy friction body, a manufacturing method thereof, and a powder metallurgy brake pad. Background technique [0002] With the advancement of science and technology and the development of high-speed railways, the speed of trains is getting faster and faster. How to make high-speed trains stop safely within a certain period of time is very important. The braking of the train is inseparable from the brake pads. [0003] During the train braking process, the brake pads mainly rely on the contact between the friction body and the train wheel or brake wheel, and the frictional resistance is generated by the loss of the friction material for braking. Therefore, if the friction body wears too much during the train braking process, it will undoubtedly bring troubles in operation and maintenance. The provisional technical conditi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/00B22F1/00B22F3/02B22F3/10C22C30/02C22C32/00F16D69/02
CPCB22F1/0003B22F5/00C22C30/02C22C32/0005B22F3/02B22F3/10F16D69/027B22F2998/10F16D2200/0008F16D2200/0026F16D2200/0052F16D2200/0082
Inventor 王剑孙鹏杨国栋于敬洋孟辉钟梓云
Owner 北京浦然轨道交通科技股份有限公司
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