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Brake Disc Introduction
- Jul 28, 2017 -

Brake disc introduction

There are two ways to brake: disc brake and drum brake. Now many cars are used before and after the disc brake, because the disc brake and drum brake compared to the following advantages: disc brake has a good heat dissipation performance, not because of high-speed braking and thermal recession; In addition, the disc brake will not because of continuous Brakes and brake failure caused by the phenomenon, to ensure safe driving; disc brake drum drum structure is simple, easy maintenance.

1.Brake disc processing technology

Brake disc as a brake disc brake components, determines the car brake effect is good or bad. Brake discs are also turning during the running of the car. When braking, the brake caliper clamps the brake disc to produce the braking force. So that the relative rotation of the brake disc fixed to play a deceleration or parking effect.

2, brake disc processing requirements

Brake disc is an important part of the brake system, good brake disc brake stability, no noise, no jitter. So the processing requirements are higher, as follows:


1, brake discs are casting products, the surface requirements can not exist trachoma, porosity and other casting defects, to ensure that the brake disc strength and stiffness, to prevent the occurrence of external forces in the accident.

2, disc brake when the use of the two brake surface, so the brake surface accuracy is higher, but also to ensure the location accuracy.

3, in the brake will have a high temperature, the middle of the brake disc should be designed duct, easy to heat.

4, the middle of the brake disc hole, is the main benchmark for the assembly. So the process of processing holes is particularly important, the current commonly used BN-S30 material for processing tools.

3, the brake disc processing technology

Brake disc commonly used materials for China's gray cast iron 250 standard, referred to as HT250. The main chemical composition is: C (3.1-3.4), Si (1.9-2.3), Mn (0.6-0.9), hardness requirements between 187-241. The brake disc blank is cast by heat treatment to improve the internal stress generated during the casting process, reduce the deformation and cracking, and improve the machinability of the casting. After screening, will meet the requirements of the blank pieces for machining. The process is as follows:

1, rough car large round surface

2, rough in the hole

3, rough car small round face, side and right side of the brake surface

4, rough car left brake surface and the hole

5, semi-fine car large round surface, the left side of the brake surface and the hole

6, semi-fine car small round face, face, in the right and the right side of the brake surface

7, fine car slot and the right side of the brake surface

8, fine car left brake surface and small round face, fine left side of the bottom round, the hole chamfer

9, drilling to deburring, blowing iron scrap

10, storage