What is a Brake Disc?
2 Answers
Brake discs are the friction mating components of disc brakes. In addition to requiring the strength and stiffness necessary as structural components, they should also possess a friction coefficient that is as high and stable as possible, along with appropriate wear resistance, heat resistance, heat dissipation, and thermal capacity. Below is an introduction to automotive brake discs: 1. Function: The basic function of an automotive braking system is to decelerate or stop a moving vehicle, maintain a stable speed for vehicles traveling downhill, and keep stationary vehicles in place or on slopes. The automotive braking system directly affects the safety of the vehicle and the reliability of parking. Only vehicles with good braking performance and reliable braking systems can fully utilize their power performance. 2. Characteristics: Generally, there is no friction self-energizing effect, so the effectiveness of the brake is less affected by the friction coefficient, meaning the performance is more stable; effectiveness decreases less when wet, and normal performance can be restored after just one or two braking actions; under the same output braking torque, the size and mass are smaller than those of drum brakes; the thermal expansion of the brake disc in the thickness direction is extremely minimal.
The brake disc is a crucial component in a car's braking system, resembling a large metal plate fixed to the wheel. When you press the brake pedal, the brake pads clamp onto this disc like pliers, using friction to slow down and stop the vehicle. Many car enthusiasts refer to it as the brake disc. In daily driving, it plays a vital role in heat dissipation and absorption, typically made of cast iron, which is the standard design for most family cars. Over time, the surface of the brake disc can wear thin or develop scratches, requiring timely replacement. Otherwise, the brakes may shudder or fail, posing a danger while driving. It is generally recommended to check the disc thickness every two years, as urban traffic congestion accelerates wear. Remember, its superior heat dissipation compared to older drum brakes ensures smoother driving.
