Common cylindrical roller bearing model difference
Common cylindrical roller bearing model difference
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The quality of bearing steel
by：Waxing
2020-09-18
Rolling bearing in the tensile, compression, shear, alternating under complicated stress state and high stress values, such as high speed, long work, is very strict with the quality of bearing steel.
First is the chemical composition, this is the essential factors of bearing steel, steel of physics, chemistry, mechanical properties and microstructure are determined by the chemical composition, thus bearing steel chemical composition must conform to the standards prescribed by the allowed range.
Then the internal quality, internal macro quality of bearing steel are not allowed to have white spots, shrinkage, slag inclusion, dissimilar metals, defects such as cracks, burnt, internal segregation and loose control within a certain range;
Internal microscopic quality steel internal organization (
Banded carbide, carbide network, carbide liquid chromatography and annealing organization)
To uniform, the distribution of the carbide must be within the allowed range and control level.
Purity is higher at the same time, the bearing steel in the nonmetallic inclusions as little as possible, and dispersion of the evacuation, the better, of non-metallic inclusions in the standard level of strict control.
Finally the surface quality of bearing steel can not have crack, folding, cracking, scarring and slag, can not have serious decarburization phenomenon.
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