How to deal with scratches on brake discs

        The brake disc is a crucial component in the automotive braking system, and its surface condition directly affects the braking performance and safety of the vehicle. When scratches appear on the brake disc, they need to be dealt with in a timely manner to avoid affecting the braking effect and even causing safety hazards. This article will provide a detailed introduction to the causes, effects, and treatment methods of brake disc scratches.
        1、 Causes of Scratches on Brake Discs
        1. Brake pad wear: Friction between brake pads and brake discs is the fundamental principle of braking. If the brake pads are severely worn or the material is uneven, the hard particles on their surface may scratch the brake disc, forming scratches.
        2.During driving, foreign objects such as sand, stones, and metal shavings may get stuck between the brake pads and brake discs, causing scratches on the surface of the brake discs.
        3. Improper installation. When replacing brake pads or discs, improper installation may result in uneven contact between the brake pads and discs, leading to scratches.
        4. Corrosion and oxidation: Long term exposure to humid environments may cause rust or oxidation on the surface of brake discs, and the rusted parts may be rubbed during braking, forming scratches.
        5. Frequent sudden braking can cause the brake disc to overheat, the surface metal to soften, and it is more likely to be scratched.
        2、 The impact of brake disc scratches
        1. Decreased braking performance and scratches can cause uneven surface of the brake disc, reducing the contact area between the brake pads and the brake disc, thereby affecting the braking effect.
        2. Abnormal noise and vibration scratches may cause abnormal noise during braking or steering wheel vibration, affecting driving comfort.
        3. The increased wear of brake pads and the presence of scratches can accelerate their wear and shorten their service life.
        4. Scratches with serious safety hazards may cause brake discs to crack or deform, increasing the risk of brake failure.

        3、 Methods for handling scratches on brake discs
        1. Treatment of minor scratches: If the scratches are shallow and few in number, the following methods can be used: - Normal use break in: Apply the brake lightly multiple times on a safe road section, gradually grinding down the scratches using the friction between the brake pads and brake discs. -Clean the surface: Use a specialized cleaning agent to remove dirt and rust from the surface of the brake disc, avoiding further deterioration of scratches.
        2. Treatment of moderate scratches: For deeper scratches, the following measures can be taken: - Grinding repair: Use a professional brake disc grinder to polish the surface, remove scratches, and restore flatness. Pay attention to measuring the thickness of the brake disc after polishing to ensure that it is within a safe range. -Replace brake pads: Check the wear of the brake pads. If hard spots or uneven wear are found on the brake pads, they should be replaced in a timely manner.
        3. Treatment of severe scratches: If the scratches are very deep or the surface of the brake disc has been deformed, it is recommended to replace the brake disc directly. The specific steps are as follows: - Choose a new brake disc: Select high-quality brake discs that match the original car, ensuring that their size, material, and performance meet the requirements. -Dismantling old brake discs: Use professional tools to disassemble the wheels and old brake discs, taking care to avoid damaging other components. -Install new brake discs: Install the new brake discs according to the instructions or the guidance of a professional technician, ensuring that they are securely installed and positioned correctly. -Break in new brake discs: After installation, a period of break in is required to avoid sudden braking and ensure full contact between the brake discs and brake pads.
        4. Daily maintenance and prevention - Regular inspection: Check the wear of brake discs and brake pads at regular intervals to promptly identify problems. -Avoid sudden braking: Develop good driving habits, reduce the frequency of sudden braking, and lower the risk of brake disc damage. -Maintain cleanliness: Regularly clean the brake system to prevent foreign objects from entering. -Replace high-quality brake pads: Choose high-quality brake pads to reduce wear on the brake discs.
        4、 Precautions
        1. Safety first. When dealing with brake disc scratches, it is essential to ensure that the vehicle is in a safe condition and seek professional technicians if necessary.
        2. To avoid excessive polishing of brake discs, it is necessary to control the amount of polishing to avoid insufficient thickness of the brake disc caused by excessive polishing, which affects braking performance.
        3. Regular maintenance of the brake system is crucial for vehicle safety, as it can extend its lifespan and prevent accidents from occurring.
        4. When choosing regular accessories to replace brake discs or brake pads, it is necessary to choose products produced by regular manufacturers to ensure their quality and performance.
        Although scratches on the brake disc may seem like a minor issue, if not dealt with in a timely manner, it can have a serious impact on the braking performance and safety of the vehicle. Depending on the severity of the scratches, one can choose to grind and repair or replace the brake disc directly. Meanwhile, daily maintenance and upkeep are also important measures to prevent scratches. By using the correct handling methods and good driving habits, the service life of brake discs can be effectively extended, ensuring driving safety.