Brake pads are generally composed of steel plates, bonded insulation layers and friction blocks.
The materials used to make brake friction pads can be divided into: asbestos brake pads, semi-metal brake pads, less metal brake pads, NAO formula brake pads, ceramic brake pads, and NAO ceramic brake pads.
The working principle of automobile brakes mainly comes from friction. The friction between the brake pads and the brake discs (drums) and the tires and the ground is used to convert the kinetic energy of the vehicle into frictional heat energy to stop the vehicle. . Therefore, in the automobile braking system, brake pads are the most critical safety parts.
The process flow for manufacturing brake pads is: powder mixing - thermoforming - heat treatment - grinding - ablation - spraying - packaging.
1. Powder mixing: Mix the brake pad formula raw materials together to make the materials uniform;
2. Thermoforming: Heat-press the powder and steel back through a hydraulic press and a mold. into the basic shape of the brake pad;
3. Heat treatment: Put the product into a heat treatment box to heat, remove the moisture in the product and make the material more integrated;
4. Grinding: By grinding The machine grinds the product to the required thickness;
5. Ablation: Pass the brake pad through a higher-temperature ablation machine to further remove residual moisture.
6. Spraying: Use a spraying machine to spray the steel back of the brake pads with the desired color and brand LOGO, usually black, but also red and blue;
7 , Packaging: vacuum plastic sealing of the finished product.