Brake disc is a very important component of the car's brake system. It achieves the braking effect through friction with the brake caliper, so that the car can stop safely.

The material of the brake disc is usually cast iron or alloy steel. These materials have good wear resistance and high temperature resistance and can withstand long-term braking friction. The surface of the brake disc usually has some special treatments, such as marking and punching, which can increase the friction of the brake disc and improve the braking effect.

In daily use, the brake disc needs to be inspected and maintained regularly. If the brake disc is worn, deformed or cracked, it needs to be replaced in time, otherwise it will affect the braking performance and even cause brake failure. In addition, the brake disc also needs to be maintained during use, avoid being in a high temperature state for a long time, and avoid contact with liquids such as water and oil.

In short, the brake disc is an indispensable part of the car's brake system, and its performance and quality are directly related to the driving safety of the car. Therefore, we must pay attention to the inspection and maintenance of the brake disc when using the car to ensure that the brake system is always in good working condition.