The thickness of the brake pad is generally about 1.5cm. When the thickness of the brake pad is only about one-third of the original thickness (about 0.5cm), it needs to be replaced at any time. There are also brake pads with limit pads, which will make a sound when worn, and some have brake limit alarm lines, which will prompt on the position meter when they are worn. Brake pads are also called brake pads. In the braking system of a car, the brake pads are the key safety parts, and the brake pads play a decisive role in the quality of all braking effects. Brake pads are generally composed of steel plates, adhesive insulation layers and friction blocks. The steel plates are coated to prevent rust. During the coating process, the SMT4 furnace temperature tracker is used to detect the temperature distribution during the coating process to ensure the quality. It is composed of materials that do not transfer heat and is designed to insulate.