High temperature bearing common failure mode and countermeasures

1 high temperature bearing common failure mode and countermeasures flake. Channel on one side of the limit of raceway unilateral flake limit position mainly for race and retaining wall at the junction of serious peeling. The reason is that high temperature bearing installation does not reach the designated position or suddenly appeared in the process of axial overload operation. Countermeasures to guarantee high temperature bearing installed, or the freedom to cooperate to clearance with high temperature of bearing outer ring, so that in the high temperature bearing overload of high temperature bearing to compensate. 2. Stripping of the channel is symmetric the location of the center position in circumferential direction for peeling performance, lap is a band around the spalling, however the outer circumferential symmetry distribution location flake ( The short axis of the ellipse) Main aspect, and the analysis of important reasons is because too much a shell hole oval or two separate shell structure, the performance in the Chinese motorcycle camshaft of high temperature to affect the bearing ability is especially obvious. When high temperature bearing pressure into the big elliptical shell hole or two separate enclosure binding, the high temperature bearing outer ring can produce ellipse, learning in the short axis clearance significantly reduce enterprise even negative clearance. Under the action of load, high temperature bearing inner ring spinning process of circumferential crumbling, outer ring only in the short axis symmetric space location information to produce a large number of crumbling. This is the main work of the early education development of high temperature bearing failure reasons. Raceway tilt peeling off working in high temperature bearing horizontal plane is inclined peeling band, that through the study of high temperature bearing is inclined in a state of work, when the tilt Angle to achieve or exceed the critical state, easy early education to form a kind of abnormal wear and spalling sharply. Cause analysis of the main problems because we install some bad, axis deflection, journal and low accuracy of shell hole, adopt corresponding countermeasures to ensure high temperature bearing installation project quality and improve the shoulder, shoulder the axial runout of precision. Ring ring fracture failure mode general enterprises is rare, is often caused by sudden overload problem. An important reason for more complex, such as high temperature bearing raw materials management defects ( Bubbles, shrinkage) And forging defects ( Burnt) , heat treatment defects ( Overheating) , processing defects ( Local burn or surface micro cracks) , host defects ( Some bad installation, poor lubrication, instantaneous overload) Etc. , once the overload shock load or violent vibration could make the ring fracture. Take corresponding countermeasures to avoid overload impact load, can choose the proper amount of interference, improve their installation location accuracy, improving environmental conditions and strengthen we use for high temperature bearing design and manufacture of quality cost control in the process of development. Cage cage breaking belongs to sporadic abnormal failure mode. Creep phenomenon is also one of the enterprise maintains the cause of the fracture problem. So-called creep refers to the ring sliding phenomenon, more in the mating surface interference under the condition of insufficient quantity, due to the use of sliding and make the load points around the development direction of the mobile to produce relative axial ring or shell to circular motion in a different direction location deviation phenomenon. Creep once students, mating surface significantly improved wear and abrasion powder could we enter China internal high temperature bearing company, formed a kind of abnormal wear - — Groove peeling off - — Keep the process of wear and tear and additional load that possible causes maintains a fracture. A: on the high temperature of bearing installation and bearing lubrication under a small coup: none