Characteristics of bearing STEEL:
Contact Fatigue Strength
Bearing under the action of periodic load, contact appearance is very easy to attack fatigue damage, that is, the emergence of cracking spalling, which is the important damage of bearing situation. Therefore, in order to improve the bearing life, bearing steel must have high contact fatigue strength.
Second, abrasion resistance
Bearing tasks, the ring, rolling and maintenance of the cage between not only the onset of rolling friction, but also will attack sliding, so that the bearing parts have been worn. In order to increase the wear of bearing parts, maintain the stability of bearing precision, extend the service life, bearing steel should be very good wear resistance.
Hardness is one of the important quality of bearing quality, which has indirect influence on contact fatigue strength, wear resistance and elastic limit. Bearing steel in the application of the hardness of individual to reach the hrc61~65, the ability to achieve high contact fatigue strength and wear resistance.
Iv. Antirust Performance
In order to avoid bearing parts and finished products in the process of processing, hosting and using the process of corrosion rust, request bearing steel should have good rust-proof performance.
V. Processing performance
Bearing parts in the consumption process, to go through a lot of cold, hot processing processes, in order to satisfy a small quantity, high efficiency, high-quality request, bearing steel should have good processing performance. For example, cold, thermoforming properties, cutting performance, hardenability and so on.
Bearing steel In addition to the above basic request, should also reach the chemical composition is appropriate, the external organization average, non-metallic admixture less, external appearance of the shortcomings of the specification and the appearance of decarbonization layer does not exceed the regular concentration and other requests.
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