Is drilling and marking brake discs really useful?

       Punching and marking brake discs are two common surface treatment methods, each with its own advantages in improving braking performance. The following is a detailed analysis of these two processing methods and whether they are truly useful.
       1、 The function of drilling and marking brake discs
       1. Improve heat dissipation efficiency
       Punching and marking designs can significantly improve the heat dissipation efficiency of brake discs. Perforated brake discs accelerate heat dissipation through air convection, increasing their heat resistance by over 40%. Marking brake discs increases the surface area of the brake disc in contact with air, improves heat dissipation efficiency, and reduces thermal attenuation caused by high temperatures.
       2. Exhaust high-temperature gases and dust
       The punching and marking design can quickly exhaust the high-temperature gas generated during braking and bring out some of the dust generated by the brake pads. This helps to maintain contact between the brake pads and brake discs, reduce rolling friction caused by dust, and increase friction.
       3. Reduce the influence of water film and gas film
       When driving on rainy days, punching and marking brake discs can effectively prevent the formation of water film lubrication effect and prevent the braking effect from weakening. When driving on sunny days, it can also reduce the air film generated by the air and improve the braking effect.
       4. Increase friction coefficient
       Punching and marking lines create more friction edges and corners on the surface of the brake disc, which can generate stronger friction with the brake pads during braking. Physically, it increases the friction coefficient generated by braking, increases the friction between brake discs, and effectively shortens the braking distance.
       5. Reduce brake shake
       Punching and marking brake discs can effectively solve the rolling friction caused by friction dust, road impurities, and dust in the air generated by braking during vehicle operation, reducing brake noise, brake shaking caused by uneven friction, and other phenomena.
       6. Thermal degradation resistance
       Punching and marking brake discs have strong high temperature resistance and good heat dissipation, which improves the thermal degradation resistance of brakes, maximizes the contact between brake pads and brake discs, improves the feel of brake pedals, and makes braking smoother.

       2、 Advantages and disadvantages of drilling and marking brake discs
       advantage
       Improving braking performance: By improving heat dissipation efficiency, discharging high-temperature gases and dust, reducing the influence of water and gas films, increasing friction coefficient, reducing brake shake, and enhancing heat resistance, perforated and lined brake discs can effectively shorten braking distance.
       Weight reduction: The perforated design can significantly reduce the weight of the brake disc, thereby improving the overall performance of the vehicle.
       Appearance improvement: Perforated and lined brake discs have a unique appearance, making them more sporty and suitable for modified cars and high-performance vehicles.
       disadvantage
       Poor durability: The edges of the holes in perforated brake discs are prone to cracking, and their service life is 30% shorter than that of ordinary brake discs.
       High maintenance cost: Punching and marking brake discs require regular cleaning of the gravel inside the holes, and inferior discs may crack.
       Expensive: The price of perforated and lined brake discs is usually 2-3 times that of regular brake discs.
       3、 Applicable scenarios
       High performance vehicles: For high-performance vehicles that pursue braking performance and lightweight, perforated brake discs are a better choice.
       Track Day and Intense Driving: Perforated and lined brake discs perform well in track day and intense driving scenarios, providing stronger heat dissipation and resistance to thermal degradation.
       Daily driving: For general household vehicles, lined brake discs can provide better break in characteristics between brake pads and brake discs while ensuring braking performance.
       Punching and marking brake discs are indeed useful, as they enhance braking performance in various ways, including improving heat dissipation efficiency, expelling high-temperature gases and dust, reducing the influence of water and gas films, increasing friction coefficient, reducing brake shake, and enhancing thermal degradation resistance. However, perforated brake discs also have their drawbacks, such as poor durability, high maintenance costs, and high prices. The choice of processing method depends on the specific application scenario and performance requirements. For high-performance vehicles and track day use, perforated and lined brake discs are an ideal choice; For daily driving, lined brake discs are already sufficient to meet the needs.