High-performance motorcycle brake disc material and preparation method

Abstract

Motorcycle brake disc materials are required to have high mechanical strength, excellent wear resistance, low density and good heat dissipation performance. At present, brake discs made of a single material like malleable cast iron or gray cast iron or alloy steel cannot meet actual comprehensive performance requirements. The invention discloses a high-performance motorcycle brake disc material. Firstly, alloy powder comprising 2-2.5% of C, 4.0-4.5% of Cr, 3.5-4.0% of Mo, 8.5-9% of V, 1-2% of W, 2-3% of Co and the balance Fe is prepared; then, the alloy powder is sintered into a porous body with certain strength and porosity; then, the porous body is infiltrated with aluminum alloy to obtain a dense bulk material; and then, suitable heat treatment is performed to obtain a high-performancemotorcycle brake disc finally. The microstructure of the material is a dual-communicating structure, the iron-based alloy can provide high high-temperature resistance strength and wear resistance, andthe aluminum alloy can provide high thermal conductivity and low density, so the final material has excellent comprehensive performance such as high wear resistance, high-temperature strength, high thermal conductivity and low density.

Description

technical field [0001] The invention relates to the technical field of brake materials, in particular to a high-performance motorcycle brake disc material and a preparation method. Background technique [0002] The brake disc is an essential part of the braking system of all vehicles. It is fixed on the axle and rotates with the wheel. When braking, the brake pad is pushed to the brake disc by the push of the caliper piston, and the brake pad and the brake disc The frictional force reduces the wheel speed to achieve the purpose of vehicle deceleration and braking. With the acceleration of the vehicle, the brake disc will bear the pressure and friction of the brake block, and wear will occur in the relative movement with the brake block, especially when there are sandstones and other sundries on the working road surface, the wear will be more serious. Seriously, greatly shorten the service life of the brake disc. Therefore, the material for making the brake disc not only ha...

AI Technical Summary

Problems solved by technology

At present, cast iron or steel motorcycle brake discs have the problem of poor heat dissipation. In order to increase the heat dissipation performance of the brake disc, a large number of ventilation holes are arranged on the brake disc, which also affects the overall mechanics of the brake disc. performance

In addition, the weight reduction of brake discs is also the current development trend. Although it has been reported that ceramic friction discs are used to replace steel friction discs to reduce density and improve wear resistance, it is difficult to implement them on ordinary motorcycles due to high cost. Promote application