• be hard
enough to cope with fatigue and plastic deformations
• be tough
enough to cope with applied loads
• be
sufficiently stable to experience only limited changes of dimensions over time
The required properties are achieved by heat and surface
treatments of Induction Hardening in Faridabad.
Hardening
There are three typical hardening methods that may be
applied to bearing components:
• Through-hardening
This is the standard method for most bearings and provides
good fatigue and wear resistance, as hardening is applied over the full cross
section.
• Induction-hardening
Surface induction-hardening is used to selectively harden a
component’s raceway to limit rolling contact fatigue, leaving the remainder of
the component unaffected to maintain structural
• Case-hardening
Case Hardening in Faridabad
provides hardness to the surface. It is used, for example, where bearing rings
are subjected to high shock loads causing structural deformations.
Dimensional stability
Heat treatment is used to limit dimensional changes due to
metallurgical effects at extreme temperatures. There is a standardized
classification system for dimensional stability. The various SKF bearing types
are stabilized to different classes as standard.
Surface treatment and coatings
Coating is a well-established method for providing bearings
with additional functional benefits to accommodate specific application
conditions. Widely used coatings are zinc chromate and black oxide.
Two other methods developed by SKF have proven successful in
many applications:
• INSOCOAT
bearings are standard bearings that have the external surfaces of their inner
or outer ring coated with an aluminium oxide layer. This coating increases
resistance to electric current through the bearing.
• NoWear
enhances wear-resistance of the raceway or rolling element surfaces. It can
help the bearing withstand long periods of operation under poor lubrication
conditions and to reduce the risk for low load damages Induction Hardening.
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