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Aluminum-based composite solid brake disc for automobile and preparation method of aluminum-based composite solid brake disc

A technology of aluminum-based composite materials and brake discs, applied in the direction of brake discs, brake types, brake components, etc., can solve the problems of reduced braking performance and poor heat dissipation

Pending Publication Date: 2021-05-11
北京洛科瀚科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The brake disc solves the problem of deteriorating braking performance caused by wear and debris through the setting of dirt-holding grooves on the friction surface, and improves the problem of poor heat dissipation by adding cooling holes on the edge of the friction body. The focus is on the side of the brake disc Set up a reciprocating point brake mechanism to solve the locking problem, without technical means involving lightweight

Method used

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  • Aluminum-based composite solid brake disc for automobile and preparation method of aluminum-based composite solid brake disc
  • Aluminum-based composite solid brake disc for automobile and preparation method of aluminum-based composite solid brake disc
  • Aluminum-based composite solid brake disc for automobile and preparation method of aluminum-based composite solid brake disc

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preparation example Construction

[0060] In one embodiment, a method for preparing a solid brake disc of an aluminum matrix composite material for automobiles provided by the present invention comprises the following steps:

[0061] S1: Heat the A356 aluminum alloy in the crucible to 680-750°C, for example, you can choose 680°C, 690°C, 700°C, 730°C or 750°C, after refining and degassing, cool down to 650°C with the furnace, in nitrogen or argon Or keep warm under vacuum protection for use;

[0062] S2: adding 18-28wt% SiC to the A356 aluminum alloy melt obtained in step S1, and stirring evenly;

[0063] S3: Heating the mixture of aluminum alloy and SiC obtained in step S2 to 680-750°C, for example, 680°C, 690°C, 700°C, 730°C or 750°C, for anti-gravity casting to obtain the casting blank of the brake disc .

[0064] S4: Machining the casting blank obtained in step S3 to obtain a solid brake disc of aluminum matrix composite material for automobiles.

[0065] In an optional embodiment, in the above step S3, t...

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Abstract

The invention relates to an aluminum-based composite solid brake disc for an automobile. The aluminum-based composite solid brake disc comprises a working part, a connecting part and a mounting part, the outer ring side of the connecting part is connected with the working part, and the inner ring side of the connecting part is connected with the mounting part. The brake disc is made of a SiCp / A356 aluminum-based composite through an anti-gravity casting method. An inner side brake face and an outer side brake face are arranged on the inner side and the outer side of the working part correspondingly. The connecting part adopts a structure with the thickness gradually transited, the thickness is gradually reduced from the working part to the mounting part, and inner side reinforcing ribs or outer side reinforcing ribs are arranged on the inner side and the outer side of the connecting part. The invention further provides a preparation method of the aluminum-based composite solid brake disc for the automobile. Compared with a brake disc made of gray cast iron, the weight of the brake disc can be reduced by more than 40%, meanwhile, due to the high heat conduction capacity and heat storage capacity of the material, the friction temperature rise of the brake disc can be reduced, the temperature distribution of the brake disc is homogenized, large thermal stress is prevented from being formed in the brake disc, and crack initiation and propagation are prevented.

Description

technical field [0001] The invention belongs to the related technical field of automobile brake discs, in particular to a lightweight and long-life solid brake disc for automobiles using aluminum-based composite materials and a preparation method thereof. Background technique [0002] The braking system of a car is very important to driving safety. The function of the braking system is to slow down and stop the moving car. The working principle of the braking system is to convert the kinetic energy of the car into heat energy through friction. [0003] There are mainly two types of brakes in automobile braking systems: drum type and disc type. Among them, the disc brake is open, the heat generated in the braking process can be dissipated quickly, and has good braking efficiency, which is now widely used in automobiles. [0004] The brake disc of the disc brake is a disc-shaped component with the end plane as the friction working surface. Brake discs can be divided into so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/12F16D65/847F16D66/02B22C9/22C22C1/10C22C32/00
CPCB22C9/22C22C1/1036C22C32/0052F16D65/125F16D65/128F16D65/847F16D66/021F16D2065/1332
Inventor 沙镇嵩王学斌李志强杨智勇韩尚林李卫京刘小龙韩玉惠韩建民
Owner 北京洛科瀚科技有限公司
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