First, the contact fatigue strength
Bearings
under the action of periodic load, the contact surface is prone to
fatigue failure, that is, crack spalling, which is the main form of
damage bearings. Therefore, in order to improve the bearing life, bearing steel must have a high contact fatigue strength.
Second, wear resistance
Bearing
work, the ring, the rolling body and the cage not only between rolling
friction occurs, but also occurs sliding friction, so that bearing parts
continue to wear. In order to reduce the wear of bearing parts, to maintain the
stability of bearing accuracy and extend the service life, bearing steel
should have good wear resistance.
Third, hardness
Hardness
is one of the most important qualities of bearing quality and has a
direct impact on the contact fatigue strength, wear resistance and
elastic limit. Bearing steel hardness in the state of use generally to achieve HRC61 ~
65, in order to make the bearing access to higher contact fatigue
strength and wear resistance.
Fourth, anti-rust performance
In order to prevent the bearing parts and finished products in the
process of processing, storage and use of corrosive rust, requiring
bearing steel should have good anti-rust properties.
Fifth, processing performance
Bearing
parts in the production process, to go through many road cold and hot
processing processes, in order to meet the high volume, high efficiency
and high quality requirements, bearing steel should have good processing
performance. For example, cold, thermoforming performance, machinability, hardenability and the like.
Bearing
steel in addition to the above basic requirements, but also to achieve
the appropriate chemical composition, uniform internal organization,
small non-metallic inclusions, internal surface defects meet the
standards and the surface decarburization layer does not exceed the
required concentration requirements, these items in the raw material
standards have Clear rules.
Bearing
parts commonly used materials are: high carbon chromium bearing steel,
carburizing steel (such as 20Cr2Ni4A, 15Mn, 20Cr2MnMoA), high
temperature bearing steel (such as Cr4Mo4V, Cr14Mo4, Cr15Mo4V, W18Cr4V),
stainless steel bearing (9Cr18, 9Cr18Mo, 1Cr18Ni9Ti) ,
Vacuum degassing steel, anti-magnetic bearing steel, etc., of which the
most commonly used high-carbon chromium bearing steel. The
basic steels of high-carbon chromium bearing steel are GCr6, GCr9,
GCr9SiMn, GCr15 and GCr15SiMn. They are the most versatile and the
largest amount of steels in the bearing manufacturing industry in China,
and have good wear resistance and contact fatigue performance. Ideal processing performance, with a certain degree of flexibility and toughness.
CATEGORIES
Latest news
- FB090/FB092 Wrapped Bronze Bearings
- Shock Absorber Upper & Lower Bush
- Hollow Shaft Magnetic Ferrofluid Vacuu
- Bronze Sliding Du Bush Bearing, Bronze
- Magnetic Ferrofluid Vacuum Sealing Fee
- Metal-polymer,Low Friction,Plain Beari
Contact us
- ADD: No.503,Hunan International Commerce Center, Jintai Square,Changsha 410001,Hunan
- TEL: 86-731-84770165
- FAX: 86-731-84770163
- E-mail: sales4@@slide-bearing.com
> Industry news