What will happen when the brake drum is out of round?

Brake drum is the base part of vehicle wheel brake, which is generally made of 14 or 18 size gray cast iron, or malleable cast iron. The damage of the brake drum is mainly due to the wear and deformation caused by the friction between the brake friction plate and the brake drum. Especially when the brake friction piece of the rivet head outcrop, or the brake into the sand and other hard materials, brake drum wear is more serious. Will wear and tear caused by such hard material around the brake drum groove and strain, brake drum for inner wear more than 424 mm size limit Φ scrap accounts for roughly 30% of the overhaul period, or more. If the vehicle is overloaded and driving on the mountain road, the wear of the brake drum is accelerated due to the frequent use of the brake, and there will also be a loss of circle and taper, resulting in early scrap. The reason for the crack of the brake drum is that the brake drum exceeds the limit size due to wear and tear, and after several boring processing, the drum wall becomes thin, and the crack occurs under the action of load stress. When the inner diameter size of the brake drum exceeds the limit of use, the vehicle is loaded downhill or immediately wading after running downhill, which will cause the sharp contraction of the brake drum after high temperature, and make the friction surface of the brake drum crack along the axis direction. It should be pointed out here that some units in the brake drum, the inner diameter has exceeded the use of the limit size, in the brake shoe with metal plate to increase the thickness of the brake friction plate to continue to use, which is very dangerous. Each vehicle secondary maintenance, should be removed from the brake drum, clean shoes, brake drum, such as cleaning inspection found in the brake drum crack, should be determined to replace. Brake drum crack, damage is mostly caused by poor brake drum material, insufficient strength.

Long yao county to far co., LTD., a strong, scientific research, production, sales in one of the supporting service system, has 1 2 tons of induction furnace, advanced production technology, sophisticated processing equipment, strict process control, perfect testing means and high quality staff to ensure the high quality of the products output, annual output of 10000 tons.

The main products of the company are: brake drum, wheel hub, brake disc, brake shoe and other domestic and imported automobile, semi trailer, trailer chassis accessories, complete varieties, stable and reliable quality. The company not only with heavy truck, fuhua and other large vehicle factories, bridge factory to establish a long-term stable supporting cooperation, and the products exported to the Middle East, America, Europe, Africa, Southeast Asia countries and by the trust of customers.

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