Measures to prevent the failure of brake drum

1. Adjust the brake drum itself

Heat conduction and heat dissipation of automobile brake drum material and casting external structure are two key problems. Therefore, automobile brake drum manufacturers should be based on the brake drum structure to improve the structure strength. For example, directly change the car brake drum wheel edge fit part. In addition, you can change the way the automobile brake drum and its internal round edge, doing so can do it with the edge with the improvement of the stress, the effect of brake drum flange root stress effectively reduce, especially reduce the stress concentration problems of the region may, some of the possible out, in turn, reduce the brake drum bottom failure defects risk. Here, the basic principle of the chassis can be used for reference to effectively increase the area of heat dissipation ribs and heat dissipation surface. Some companies have developed and produced with 12 brake drum external structure of vertical reinforcement, objective about this new type structure can effectively strengthen the brake drum brake the radiating surface area and strength, also can promote it in the process of brake drum operation of air flow capacity, optimize the brake drum overall heat dissipation effect, very suitable for the structure of the casting process effectively. If considering from the perspective of mechanics, it is more reasonable to design the reinforcement into spiral or annular shape, because this can effectively increase the heat dissipation area of the brake surface. However, compared with the ordinary vertical bar, its manufacturing process is somewhat difficult.

2. Control material composition

Since the brake drum will fail at high temperature, the failure problem of brake drum can be solved from the perspective of controlling the composition of casting raw materials. For example, the thermal fatigue resistance of brake drum brake surface can be improved by improving the high-temperature mechanical properties of materials or thermal conductivity of materials. For now. Iron liquid purification is relatively feasible prevention measures of brake drum failure - that it use pure iron smelting process to screen burden, after remove the impurity in casting, crystal after pouring system, fiber filter and foam ceramic filter to enhance automobile brake drum casting quality, avoid any slag inclusion defects in casting.

In a word, the corresponding performance analysis should be carried out according to the actual working conditions of automobile brake drum, and the failure causes should be pointed out, and countermeasures should be taken to effectively prevent it. For example, it can improve the fatigue resistance of brake surface, control the raw material composition of casting and so on, so as to realize the effective optimization of automobile brake drum components.