Preparation method of aluminum-based composite material applied to light brake disc

Abstract

The invention discloses a preparation method of an aluminum-based composite material applied to a light brake disc. The preparation method comprises the following steps: preparing Al2O3 foamed ceramic by adopting an organic foam dipping method, subsequently adding SiC particles into molten aluminum alloy and uniformly stirring to obtain a SiC particle reinforced aluminum-based composite material prefabricated body, and then allowing the molten prefabricated body to permeate into pores of the Al2O3 foamed ceramic by adopting a high-temperature pressure casting process to obtain an Al2O3 foamed ceramic reinforced aluminum-based composite material containing SiC particles. The surface of the brake disc is prepared from the Al2O3 foamed ceramic reinforced aluminum-based composite material containing the SiC particles. The aluminum-based composite material has unique wear resistance and high-temperature resistance as well as light weight and can preferably meet the requirements on the safety and wear resistance of the brake disc than a cast iron material.

Description

technical field [0001] The invention relates to a preparation method of an aluminum-based composite material used for a lightweight brake disc, and belongs to the technical field of automobile manufacturing. Background technique [0002] China's car consumption accounts for an increasing proportion of the world. As the world's relatively well-known large companies compete to enter the Chinese market, which has brought huge challenges to domestically produced cars, the domestic auto industry is paying more and more attention to independent research and development, especially the direction of energy saving and emission reduction. Lightweight is one of the effective ways for automobiles to achieve energy saving and emission reduction. As a component that plays an important role in driving safety, brake discs are gradually attracting attention to their light weight. A lightweight brake disc should not only have good thermal conductivity, but also have a high and stable coeffic...

AI Technical Summary

Problems solved by technology

However, most of the commonly used brake discs are monolithic cast iron materials at present, and there are the following problems in practical applications. 1. The mass is large, which increases the total weight of the car, which is not conducive to the development of energy saving and emission reduction; 2. The wear resistance is poor, and the car is running After a certain mileage, the wear degree is high, and it cannot be used continuously; 3. The high temperature resistance is poor, and the heat generated by friction during the braking process changes the strength of the brake disc.