Baotou beiben parts brake drum is the basic pieces of vehicle wheel brake, generally use 14 or 18 gray cast iron, malleable iron or manufacturing. The damage of the brake drum is mainly due to the friction and wear of the brake disc and brake drum. Especially when the rivet head outcrop brake, or brake into sand and other hard materials, wear of brake drum is more serious. The hard material wear caused by the formation of the trench and pulled around in the brake drum, brake drum scrapped because the inner wear exceeds the limit size diameter of 424mm is about the overhaul period of about 30% or more. If the vehicle is overloaded and traffic on the road, Baotou beiben wear parts of the brake drum brake due to the use of the frequent acceleration will also appear out of roundness and taper caused by early retirement.
Baotou beiben parts brake drum brake drum crack due to wear more than limit size, and after many boring, the drum wall thinning, cracks in the load stress. In the brake drum diameter exceeds the limit, overloading of vehicles or driving downhill down immediately after wading, will cause the brake drum temperature after a sharp contraction of the brake drum friction surface along the axial direction of the crack. Here it should be pointed out that after some units have exceeded limit size in the brake drum, brake shoe in diameter, with metal plate increase brake friction plate thickness to continue to use, this is very dangerous.
The two level of each vehicle maintenance, should be removed from the brake drum, clean shoes, brake drum, such as cleaning inspection found brake drum cracks, should be determined to replace. The main reason for the damage of the brake drum is the bad material of the brake drum.