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Composite material brake disc

A composite material, brake disc technology, applied in the direction of brake disc, brake type, brake components, etc., can solve the problem of poor bonding force between the substrate and the wear-resistant layer, and achieve increased wear resistance, good wear resistance and Toughness, uniform distribution effect

Active Publication Date: 2021-02-26
CRRC QISHUYAN INSTITUTE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to provide a composite material brake disc, which can not only solve the defect problem of the integral aluminum matrix composite material brake disc, but also solve the problem of poor bonding force between the matrix and the wear-resistant layer

Method used

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Embodiment Construction

[0043] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0044] The present application will be described in further detail below in conjunction with specific examples, and these examples should not be construed as limiting the scope of protection claimed in the present application.

[0045] see figure 2, the composite material brake disc of the present invention is prepared by a friction stir processing method from a base layer and a composite layer of two different materials. Wherein, the base layer is an aluminum-silicon alloy or an aluminum-silicon-copper alloy, which mainly plays a bearing role. The Al-Si alloy or Al-Si-Cu alloy may be a hypoeutectic alloy, eutectic alloy or hypereutectic alloy. In this embodiment, a small amount of ceramic ...

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Abstract

The invention provides a composite material brake disc. The composite material brake disc comprises a base body layer playing a role in bearing and a composite layer providing friction braking force,the base body layer and the composite layer are combined with each other in a metallurgical bonding mode, a transition layer is generated at the interface where the base body layer and the composite layer are combined with each other, and a reinforcing structure for connecting the base body layer and the composite layer is formed in the transition layer. According to the composite material brake disc, on one hand, the volume fraction of reinforced particles of the composite layer is increased, the abrasion resistance is improved, ceramic particles are prevented from being added into the base body layer, the strength and the elongation of the base body layer are improved, the failure risk is reduced, the heat conduction capacity of the base body layer is improved, heat generated by the friction layer is transferred into air, and the overall temperature rise of the brake disc is reduced; and on the other hand, compared with the prior art that an aluminum alloy base body layer and an abrasion-resisting layer are connected in a mechanical bonding mode, the composite material brake disc generates the transition layer between the base body layer and the composite layer in the metallurgical bonding mode, the bonding force between the base body layer and the composite layer is improved, and the risk of failure such as cracking between the composite layer and the base body layer in thecold and hot fatigue process is reduced.

Description

technical field [0001] The invention relates to the field of brake discs, in particular to a composite material brake disc. Background technique [0002] With the increasing pressure of environmental protection, energy conservation, emission reduction and reduction of environmental pollution have become the basic national policy today. Reducing the weight of rail transit vehicles and reducing energy consumption and emissions caused by frequent starting and braking are one of the most effective ways to achieve energy saving and emission reduction. At present, one of the main ways to reduce the weight of rail transit vehicles is to use new lightweight material brake discs to replace traditional steel and iron material brake discs, so as to reduce the weight of the unsprung parts and materials of running vehicles and maintain the ideal sprung and unsprung parts. weight ratio. The current lightweight material brake discs mainly include carbon / carbon fiber composite materials, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/12B22C9/06B22C9/22B22D1/00
CPCF16D65/12F16D65/125F16D65/127B22C9/06B22C9/22B22D1/00F16D2065/132F16D2065/1344F16D2250/0007F16D2200/0004F16D2200/006F16D2200/0069F16D2200/0039F16D2250/0038
Inventor 谭东夏少华李娄明李向平张士琦高红梅
Owner CRRC QISHUYAN INSTITUTE CO LTD
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