As we know, import bearing ring rupture is a serious problem, it can directly affect the import bearings functioning, imported bearing ring why is broken case? Today, Shijiazhuang Diamcut Technology provides you with bearing knowledge relating to the imported bearing ring fracture, in order to help you better access to information from these bearing knowledge, avoid import bearing does not operate properly, to inconvenience you use.

Firstly,about the raw materials

Inclusion on raw materials, porous, brittle element segregation or carbide eliquation, mesh, ribbon, not survived well partial defects such as in the processing industry is not eliminated or improved, can cause stress concentration, basic intensity weaken the ferrule, become the crack source. Preventive measures is stick to supply of main channel, and try to purchase steel is stable and reliable quality, to strengthen the incoming inspection of purchased steel, from the source the better off.

Secondly,about the production and equipment

1 forging, forging process, if produce burnt, overheating, such as inside crack into carbide network will decreases the toughness and strength of the ring, so it must always be strictly control the processing temperature, cyclic heating and cooling after forging, etc., especially to large breed ring after finish forging, the temperature is above 700 ℃, the display shall not be piled up. 2: heat treatment of heat treatment equipment is closely monitoring workshop is an important work. The reliability of the monitoring equipment; Records of monitoring data; Quenching cooling conditions; Tempering process strictly. 3 monitoring: grinding process finished productimports bearing ring grinding burn and grinding cracks are not allowed to exist, especially in the inner ring to taper of the mating surfaces shall not be burned. If ring should be full inspection after pickling, picking burns products, serious burns the unqualified should be scrapped, can't repair or repair of grinding burn is not permitted in the ring into the assembly process 4 identification management: steel warehousing to the front of the ferrule grinding, after each working procedure must be strictly management, strictly distinguish between materials and products made of different materials.

Three ,about ring overload fracture and fatigue fracture

These two possibilities exist, especially in the service premises of imported bearings. Study of ring fracture phenomenon, not only to defects from occurring in the process of materials and produce these angles to consider, but also onimported bearing parts of the structure size, processing and measurement method, processing technology,imported bearing service through analyzing factors such as the premise.