What are the requirements for the performance of the brake pads

Release time:

2019-05-06

1. Appropriate friction coefficient The friction coefficient is the most basic parameter of the friction material, which determines the basic brake pad braking torque. The brake friction coefficient specified in the national standard is between 0.35 and 0.40. The friction coefficient of qualified brake pads is moderate and stable. If it is too high, it will cause the wheels to lock up, lose control of the direction and burn the pads during the braking process. If it is too low, the braking distance will be too long. 2. Reliable safety The brake pads will generate instantaneous high temperature during braking, especially during high-speed driving or emergency braking. In the high temperature state, the friction coefficient of the friction plate will decrease, which is called thermal decay. The level of thermal decay determines the high temperature state and emergency system.

What are the requirements for the performance of the brake pads

1. Appropriate friction coefficient

The friction coefficient is the most basic parameter of the friction material, which determines the basic brake pad braking torque. The brake friction coefficient specified in the national standard is between 0.35 and 0.40. The friction coefficient of qualified brake pads is moderate and stable. If it is too high, it will cause the wheels to lock up, lose control of the direction and burn the pads during the braking process. If it is too low, the braking distance will be too long.

2. Reliable security

The brake pads will generate instantaneous high temperature during braking, especially during high-speed driving or emergency braking. In the high temperature state, the friction coefficient of the friction plate will decrease, which is called thermal decay. The level of thermal decay determines the safety of high temperature and emergency braking.

3. Satisfactory comfort

Comfort is a direct manifestation of friction performance, including braking feeling, noise, dust, smoke, odor, etc. Car owners are often most concerned about the noise of the brake pads. The noise is caused by the abnormal friction between the friction plate and the friction disc. The reasons for this are very complicated. The braking force, brake disc temperature, vehicle speed and weather conditions may all be The cause of noise.

4. Reasonable life span

Service life is a product indicator of general concern. Usually the brake pads can guarantee a service life of 30000 kilometers.