How to judge whether the brake drum brake temperature is too high?
1. Do not cause a flat tire
Rubber tires are all composed of material, it can withstand the highest temperature is about 145 ℃, once more than the temperature, rubber will melt, the tyres would burst. Because of the rims and tyres are in direct contact, experience, vehicles in use, steel temperature shall not exceed 100 ℃, for buses, corresponding yantai brake drum temperature shall not exceed 200 ℃.
2. It cannot cause the grease to melt
According to penglai wanshou, whether the grease will melt depends on two aspects, one is the maximum temperature the grease can bear, the other is the temperature of the wheel hub. Automobile wheel hub bearings use lithium grease lubrication, can bear the highest temperature is about 120 ~ 150 ℃.
3. The friction coefficient of brake block cannot drop too much
If the friction coefficient of the brake pad is reduced, the braking force of the car will be reduced. As for the characteristics of brake pads' thermal decay, there are two aspects to consider: first, to select qualified brake pads; second, to limit the temperature of the brake. It is suggested to use the brake pads of normal manufacturers so that the performance of brake drums of yantai cars will not be affected too much.