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A powder metallurgy friction material, powder metallurgy brake pad and preparation method thereof

A technology of powder metallurgy and friction materials, which is applied in the field of brake material preparation, can solve problems such as unstable friction coefficients, achieve the effects of small fluctuations, increase friction coefficients, and improve thermal conductivity and heat dissipation

Active Publication Date: 2021-06-11
BEIJING TIANRENDAOHE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the disadvantages of powder metallurgy friction materials in the prior art such as unstable friction coefficients, thereby providing a powder metallurgy friction material, a powder metallurgy brake pad and a preparation method thereof

Method used

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  • A powder metallurgy friction material, powder metallurgy brake pad and preparation method thereof
  • A powder metallurgy friction material, powder metallurgy brake pad and preparation method thereof
  • A powder metallurgy friction material, powder metallurgy brake pad and preparation method thereof

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Embodiment 1

[0039] This embodiment provides a powder metallurgy brake and its preparation method, such as figure 1 , 2 As shown in and 3, the powder metallurgy brake pad includes a first friction body 1-1 and a second friction body 1-2, the second friction body 1-2 has a groove suitable for the first friction body 1-1 to be embedded therein, When in use, the first friction body 1-1 is embedded in the groove 1-2 of the second friction body to form a composite friction body 1, and the composite friction body 1 is arranged and arranged on the brake substrate 2;

[0040] Wherein, the material of the first friction body is the first powder metallurgy friction material; the first powder friction material is composed of copper, ferrochrome, graphite, silicon carbide, nickel and tungsten with a mass ratio of 65:6:10:0.5:3:3 Copper alloy composition;

[0041]The material of the second friction body is the second powder metallurgy friction material, the second powder metallurgy friction material ...

Embodiment 2

[0048] This embodiment provides a powder metallurgy brake pad and its preparation method, the powder metallurgy brake pad includes a first friction body and a second friction body, the second friction body has a groove suitable for the first friction body to be embedded in, and When in use, the first friction body is embedded in the groove of the second friction body to form a composite friction body, and the composite friction body is arranged and arranged on the brake substrate;

[0049] Wherein, the material of the first friction body is the first powder metallurgy friction material; the first powder metallurgy friction material is composed of copper, ferrochrome alloy, graphite, nickel and tungsten-copper alloy with a mass ratio of 75:3:5:1:1;

[0050] The material of the second friction body is the second powder metallurgy friction material; the second powder metallurgy friction material is composed of copper, iron, ferrochrome alloy, graphite, molybdenum disulfide with a ...

Embodiment 3

[0057] This embodiment provides a powder metallurgy brake pad and its preparation method, the powder metallurgy brake pad includes a first friction body and a second friction body, the second friction body has a groove suitable for the first friction body to be embedded in, and When in use, the first friction body is embedded in the groove of the second friction body to form a composite friction body, and the composite friction body is arranged and arranged on the brake substrate;

[0058] Wherein, the material of the first friction body is the first powder metallurgy friction material; the first powder metallurgy friction material is composed of copper, ferrochrome, graphite, silicon carbide, nickel and Composition of tungsten copper alloy;

[0059] The material of the second friction body is the second powder metallurgy friction material; the second powder metallurgy friction material is composed of copper, iron, ferrochrome, graphite, molybdenum disulfide with a mass ratio ...

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Abstract

The invention belongs to the technical field of brake pad material preparation, and in particular relates to a powder metallurgy friction material, a powder metallurgy brake pad and a preparation method thereof. The powder metallurgy friction material includes a first powder metallurgy friction material and a second powder metallurgy friction material, wherein the first powder metallurgy friction material includes copper, ferrochrome alloy, graphite, silicon carbide, nickel and tungsten copper alloy; the second powder metallurgy friction material The materials include copper, iron, ferrochrome alloy, graphite, molybdenum disulfide, silicon dioxide and copper fiber; the first powder metallurgy friction material and the second powder metallurgy friction material are respectively pre-pressed to obtain the first friction body and the second friction body, the first friction body is embedded in the second friction body and the main pressure is formed to obtain a composite friction body, and the powder metallurgy brake pad is obtained after pressure sintering. The average friction coefficient fluctuation value of the brake pad prepared by the invention is relatively small in the braking cycle, and meanwhile, the brake pad has relatively high shear strength, good thermal decay performance, and good thermal conductivity and heat dissipation.

Description

technical field [0001] The invention belongs to the technical field of brake pad material preparation, and in particular relates to a powder metallurgy friction material, a powder metallurgy brake pad and a preparation method thereof. Background technique [0002] Powder metallurgy materials, especially copper and iron-based powder metallurgy friction materials, are widely used in transportation such as high-speed trains and airplanes as key materials for friction and wear parts such as brake pads. As the latest generation of transportation in modern society, high-speed trains have great advantages in terms of operating speed, transportation capacity, energy saving and environmental protection. With the rapid development of high-speed and heavy-duty trains and the continuous upgrading of domestic railway industry standards and UIC (International Union of Railways) technical conditions, higher and higher requirements are put forward for the performance of brake pads. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F5/00B22F7/08B22F3/16
CPCB22F1/0003B22F3/16B22F5/00B22F7/08B22F2998/10B22F3/02B22F3/14
Inventor 吴佩芳释加才让丁向莹曹静武胡晨龙波
Owner BEIJING TIANRENDAOHE NEW MATERIAL CO LTD