A kind of damping alloy for reducing howling sound of brake system and its preparation method and application

A damping alloy and braking system technology, applied in the field of alloy materials, can solve the problems of polymer damping materials aging due to heat and difficult to meet service requirements

Active Publication Date: 2021-04-27
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, under some special working conditions (such as heavy-duty trucks or rail transit fields), due to high braking speed and excessive heat generated by braki

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A damping alloy for reducing the squealing sound of the brake system, including the following raw materials in mass percentage: Mn51.61%, Cu36.32%, Al4.4%, Fe3.22%, Si0.01%, Ni1.44% and Sn3% , these raw materials are electrolytic metal raw materials.

[0031] The above-mentioned preparation method of the damping alloy for reducing the howling sound of the braking system comprises the following steps:

[0032] (1) charging: put each raw material into the vacuum induction furnace;

[0033] (2) Melting: Under the protection of argon, the power of the vacuum induction furnace is raised to 18kw, the heating rate is 0.3kw / min, the temperature is raised to 1300°C, and the melting is carried out for 50min;

[0034] (3) Refining: Refining the smelted material, the refining temperature is 1000°C, the refining time is 8min, and then stand for 5min;

[0035] (4) Casting: casting the refined material under the condition of 8kw power;

[0036] (5) Annealing and processing: the cas...

Embodiment 2

[0039] A damping alloy for reducing the squealing sound of the brake system, including the following raw materials in mass percentage: Mn49.63%, Cu38.49%, Al4.21%, Fe3.36%, Si0.01%, Ni2.3% and Sn2% , these raw materials are electrolytic metal raw materials.

[0040] The above-mentioned preparation method of the damping alloy for reducing the howling sound of the braking system comprises the following steps:

[0041] (1) charging: put each raw material into the vacuum induction furnace;

[0042] (2) Melting: Under the protection of argon, the power of the vacuum induction furnace is raised to 22kw, the heating rate is 0.5kw / min, the temperature is raised to 1400°C, and the melting is carried out for 30min;

[0043] (3) Refining: Refining the smelted material, the refining temperature is 1000°C, the refining time is 12min, and then stand for 3min;

[0044] (4) Casting: casting the refined material under the condition of 12kw power;

[0045] (5) Annealing and processing: the c...

Embodiment 3

[0048] A damping alloy used to reduce the howling sound of the brake system, including the following raw materials in mass percentage: Mn52.61%, Cu40.07%, Fe1.34%, Si0.02%, Ni3.96% and Sn2%, these raw materials are For electrolytic metal raw materials.

[0049] The above-mentioned preparation method of the damping alloy for reducing the howling sound of the braking system comprises the following steps:

[0050] (1) charging: put each raw material into the vacuum induction furnace;

[0051] (2) Melting: Under the protection of argon, the power of the vacuum induction furnace is raised to 20kw, the heating rate is 0.3kw / min, the temperature is raised to 1300°C, and the melting is carried out for 50min;

[0052] (3) Refining: Refining the smelted material, the refining temperature is 1000°C, the refining time is 10min, and then stand for 4min;

[0053] (4) Casting: casting the refined material under the condition of 9kw power;

[0054] (5) Annealing and processing: the cast mate...

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Abstract

The invention discloses a damping alloy for reducing the howling sound of a brake system and its preparation method and application. The damping alloy comprises the following raw materials in mass percentage: Mn 40-70%, Cu 30-60%, Al 0-60%, 5%, Fe 0-4%, Si 0-1%, Ni 0-5%, and Sn 0-10%. The preparation method includes: charging; melting; refining; casting; annealing and processing; solid solution and heat treatment. The damping alloy material prepared from specific raw materials in the present invention forms a damping mechanism through its own internal twin structure, which suppresses the vibration of the braking system, thereby effectively reducing the high-frequency howling sound generated by the braking system.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and in particular relates to a damping alloy for reducing howling sound of a braking system, a preparation method and application thereof. Background technique [0002] In the fields of rail transit, aerospace, and automotive engineering, high-frequency whistling noises are generated by high-speed rotating power systems due to braking. This kind of noise not only reduces the comfort inside the vehicle, but also destroys the acoustic environment outside the vehicle, which needs to be solved urgently. The research on brake system noise began in the 1970s. The current international technology development trend is manifested in three aspects: 1. Optimizing the interaction of friction pairs. For example, through the adjustment of the friction coefficient, the number of frequencies that may cause squealing noise in the braking system is reduced. 2. Optimize the basic structure of the braking ...

Claims

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Application Information

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IPC IPC(8): C22C22/00C22C1/02C22F1/16
CPCC22C1/02C22C22/00C22F1/16
Inventor 胥永刚郭宇张松郝江江朱旻昊莫继良
Owner SOUTHWEST JIAOTONG UNIV
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