Major parts of the hot rolling mill bearing enterprise loss and the cause of the failure are common

Mill for common failure reasons of loss and high temperature bearing parts enterprises and analysis of the cause of heat loss of rolling temperature and the introduction of rolling bearing bearing failure analysis, roughly divided into the following several aspects: 1. Rolling mill bearing the high temperature impact mill high temperature bearing ring ring rupture rupture can be divided into the fatigue fracture, overload, cracking defect fracture and assembly fracture. Fracture rolling mill roller of high temperature bearing components can be divided into fragments fatigue cracking, cataclastic overload four layers and burst assembly of the state of the defect. 3. Indentation ( 1) High temperature influence bearing assembly, the inner and outer circle tilt, to his shock, raceway and roller in axial easy generation by indentation ( Scratch) 。 （ 2) In static or low speed impact load or high temperature of bearing capacity is too large load rolling plastic deformation. For example, when the steel plant. （ 3) All external foreign bodies by immersion, in creasing. Scale, sand, etc. （ 4) High temperature bearing parts hardness is low. 7. High temperature bearing overheating or burned 4. High temperature bearing overheating or burn sticks bearings should feel hot rolling temperature during normal operation, such as using high temperature bearing temperature close to or more than 100 degrees, the temperature setting described bearing overheating. High temperature can cause the color of the high temperature bearing ( Blue, purple, black) 。 Burning or seizure. Causes of high temperature rolling bearing overheating or attack a lot, such as high temperature bearing itself, smooth, packing element rolling mill high speed, high temperature bearing load, such as high bearing device to adjust the mill, rolling mill drive. 5. Insist to form a frame fracture and abrasion do frame fracture reason is the original data use undeserved, design structure is unreasonable, irregular processing production process, etc. 6. Rolling element bearings and their fatigue spalling of high temperature bearing work as looks tired scattering grinding roller and ring raceway appearance under different stress at contact repeat, looks like a metal flake peeling off phenomenon can be called fatigue spalling, also known as pitting. Beginning the spalling is very small, then we present pit and gradually expand the development, after a large area exfoliate. This kind of social phenomenon will cause heat rolling mill bearing and roller ring raceway gradually reduce losses, so that they can incur mill high temperature lead to bearing's life cut short, by high temperature rolling mill enterprise working environment, and bearing failure. 7. Wear high temperature bearing rolling and sliding appearance appearance are likely wear. Rolling mill of high temperature bearing wear generally includes abrasive wear, adhesive wear and creepage wear and corrosion wear and wear and tear strength. The wear and tear may be isolated or mixed. A: high temperature under the minimum load on the number of angular contact ball bearing is a: no