Compound brake disc and manufacturing method thereof

Abstract

The invention discloses a compound brake disc and a manufacturing method thereof. The compound brake disc comprises a disc body and a connecting body which are cast together in a solid-liquid compounding mode, wherein the disc body is of a ring-shaped structure; the inner side of the disc body is a ring-shaped side wall; a plurality of uniformly distributed ventilation openings are formed in the surface of the side wall; one end of the connecting body is equipped with a plurality of composite spokes which are uniformly distributed and extend into the side wall; front ends of the composite spokes are in liquid-state compounding with the disc body; a notch which communicates with the corresponding ventilation opening is formed between every two composite spokes; the disc body and the connecting body are made of different materials to separately meet different performance; the disc body is high in friction coefficient and is high in wear resistance, and the connecting body is good in comprehensive performance, so that the two parts are cast together in the solid-liquid compounding mode, and therefore, the integral mechanical property of the brake disc is improved; and the manufacturing method is adopted, so that the disc body and the connecting body, which are made of different materials, can be cast together very well in the compound mode.

Description

technical field [0001] The invention relates to the technical field of automobile brakes, in particular to a composite brake disc and a manufacturing method thereof. Background technique [0002] Automobiles have become an indispensable and important tool for modern human activities, especially at the current stage of rapid development of logistics, and the market demand for commercial vehicles is increasing. The braking system is one of the important components of the car, which is related to the safety of driving and the safety of people's lives. As a key part of the automobile braking system, the brake disc determines the quality and performance of the automobile braking system, as well as the safety of the automobile and the life protection of personnel. [0003] Due to the characteristics of the disc brake's own structure, the disc brake has many advantages over the drum brake, so there is a tendency to gradually replace the drum brake system. In order to meet the bra...

AI Technical Summary

Problems solved by technology

At present, the brake discs of cars and commercial vehicles on the market are all in one structure ( Figure 10 ), because gray cast iron does not have bending resistance and toughness, and its low strength cannot meet the requirements of commercial vehicles, and it is prone to fracture

Due to the full connection between the connecting body and one side of the brake disc of the overall structure, there will be uneven force and distortion on both sides of the disc during the braking process, and at the same time, the ventilation and heat dissipation effect will be uneven.

Therefore, the brake disc cast with one-piece structure cannot be well adapted to the use of high load and complex road conditions in our country.

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