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Environmentally-friendly low-dust and low-noise novel brake pad for high-speed railway and preparation method thereof

An environmentally friendly, brake pad technology, applied in the direction of process efficiency improvement, additive manufacturing, mechanical equipment, etc., can solve the problems of brake pad braking performance decline, poor noise reduction effect of brake pads, and inability to meet performance requirements, etc. Achieving good heat dissipation, tight bonding, and preventing pollution

Active Publication Date: 2019-10-25
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many high-speed rail brake pads at this stage have defects of varying degrees, which cannot meet the performance requirements.
[0004] The above defects include: the graphite lubricant in the friction block will float into the air during the working process, causing pollution to the air; the thermal conductivity of the current brake pad structure is poor, and the heat will gather on the surface of the brake pad and form hot spots, making the brake The braking performance of the brake pads declines; the noise reduction effect of the current brake pads is not good, and the noise pollution is relatively large during braking

Method used

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  • Environmentally-friendly low-dust and low-noise novel brake pad for high-speed railway and preparation method thereof
  • Environmentally-friendly low-dust and low-noise novel brake pad for high-speed railway and preparation method thereof
  • Environmentally-friendly low-dust and low-noise novel brake pad for high-speed railway and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] An environmentally friendly, dusty and low-noise new high-speed rail brake pad, including a back plate, a frictional consumption layer, and a sound-absorbing and heat-dissipating layer, wherein the components and mass percentages of the frictional consumption layer are: copper 34%, iron 4%, titanium Silicon carbon 3%, manganese 4%, molybdenum disulfide 3%, silicon carbide 6%, aluminum oxide 3%, chromium carbide 4%, zirconia 5%, copper-graphite composite spherical powder 29%, barium sulfate 5% The sound-absorbing and heat-dissipating layer includes a H62 copper alloy substrate and foamed aluminum, wherein the H62 copper alloy substrate has a porous structure, and the foamed aluminum is located in the pores of the H62 copper alloy substrate.

[0057] The preparation steps of the above-mentioned new high-speed rail brake pad that is environmentally friendly, dusty and low-noise are as follows:

[0058] 1. Preparation of copper-coated graphite:

[0059] (1) Keep the graphi...

Embodiment 2

[0082] An environmentally friendly, dusty and low-noise new high-speed rail brake pad, including a back plate, a frictional consumption layer, and a sound-absorbing and heat-dissipating layer. The components and mass percentages of the frictional consumption layer are: copper 36%, iron 4.2%, titanium Silicon carbon 3.6%, manganese 3.5%, molybdenum disulfide 2%, silicon carbide 6%, aluminum oxide 2.4%, chromium carbide 2%, zirconia 2.3%, copper-graphite composite spherical powder 35%, barium sulfate 3% The sound-absorbing and heat-dissipating layer includes a H62 copper alloy substrate and foamed aluminum, wherein the H62 copper alloy substrate has a porous structure, and the foamed aluminum is located in the pores of the H62 copper alloy substrate.

[0083] The preparation steps of the above-mentioned new high-speed rail brake pad that is environmentally friendly, dusty and low-noise are as follows:

[0084] 1. Preparation of copper-coated graphite:

[0085] (1) Insulate grap...

Embodiment 3

[0108] An environmentally friendly, dusty and low-noise new high-speed rail brake pad, including a back plate, a frictional consumption layer, and a sound-absorbing and heat-dissipating layer, wherein the components and mass percentages of the frictional consumption layer are: copper 39%, iron 5%, titanium Silicon carbon 3.2%, manganese 3.8%, molybdenum disulfide 2.2%, silicon carbide 7%, aluminum oxide 2.5%, chromium carbide 2.5%, zirconia 2.8%, copper-graphite composite spherical powder 30%, barium sulfate 2% The sound-absorbing and heat-dissipating layer includes a H62 copper alloy substrate and foamed aluminum, wherein the H62 copper alloy substrate has a porous structure, and the foamed aluminum is located in the pores of the H62 copper alloy substrate.

[0109] The preparation steps of the above-mentioned new high-speed rail brake pad that is environmentally friendly, dusty and low-noise are as follows:

[0110] 1. Preparation of copper-coated graphite:

[0111] (1) Kee...

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Abstract

The invention discloses an environmentally-friendly low-dust and low-noise novel brake pad for a high-speed railway and a preparation method thereof. The novel brake pad for the high-speed railway comprises a friction consumption layer and a sound absorption heat dissipation layer and meanwhile has good wear resistance and sound absorption and noise reduction performances. The preparation method comprises the following steps that cold press molding is carried out on a raw material of the friction consumption layer, and vacuum sintering is carried out so as to obtain the friction consumption layer, wherein the existence state of graphite in the friction consumption layer is that copper plating is carried out on the surface of the graphite by adopting chemical plating, then composite spherical powder of copper and the copper-plated graphite is prepared through an aerosol powder preparation method, and the graphite is tightly combined with the copper; and an H62 copper alloy substrate ofa porous structure is obtained through the sound absorption and heat dissipation layer through a 3D printing technology, and then pores are filled with foamed aluminium, so that the effect of reducingthe noise pollution is achieved. The brake pad for the high-speed railway has the advantages of being simple in formula, high in production efficiency, small in dust pollution, low in brake noise andgood in heat dissipation performance.

Description

technical field [0001] The invention belongs to the technical field of manufacturing high-speed train brake pads, and in particular relates to a novel high-speed rail brake pad with environmental friendliness, fine dust and low noise and a preparation method thereof. Background technique [0002] With the rapid development of my country's high-speed rail technology, the speed of the train has been significantly improved. At the same time, it has also brought more severe challenges to the braking technology, because the braking power of the train has a cubic relationship with the speed of the train (high Ming, Chen Yue, Zhang Yongzhen. Research status and prospect of high-speed railway brake pads [J]. Thermal Processing Technology, 2010,39(24):113-115.), so it is very important to improve the performance of brake pads. [0003] Due to the continuous increase of vehicle speed, if emergency braking is required in the event of an accident ahead, the temperature of the brake pads ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/00B22F7/04B22F5/00B22F1/00B22F1/02C23C18/38B22F3/105
CPCB22F1/0003F16D69/00B22F7/04B22F5/00C23C18/38F16D2069/002B22F10/00B22F1/17B22F10/36B22F10/20Y02P10/25
Inventor 史晓亮杨镇瑜刘锡尧卢冠辰周宏胭邓骁斌陈远吴超华
Owner WUHAN UNIV OF TECH
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