Common Valve Seat Coating Materials
Valve Seat: The detachable surface parts in valve are used to support the valve spool in the fully closed position and constitute a sealed part. Generally, valve seat diameter is the maximum flow diameter of the valve.
PRODUCT PARAMETERS FOR OUR high performance valve seat
This part can be illustrated by a table shown below:
|
name
|
Description
|
Chemical composition
|
Max thickness
|
Hardness
|
Bond strength
|
Porosity
|
Limit temperature
|
Costing
characterlzation
|
|
|
wt.%
|
mm
|
|
MPa
|
%
|
℃
|
|
WC-CoCr
|
WC86/Co10/Cr4
|
Co：9-11
Cr：
C：
W: Bal
|
1
|
1100-1500
|
>75
|
<1%
|
482
|
• Good abrasive resistance at low temperature
• Compared with WC-Co, its oxidation resistance
and corrosion resistance are improved.
• The coating is compact and hard
|
|
|
|
|
WC-Co
|
WC88/Co12
|
Co：11-13
C：
W：Bal
|
2
|
1050-1200
|
>75
|
<1%
|
454
|
• Good abrasive resistance at low temperature.
• Limited oxidation resistance and corrosion
resistance.
• The coating is compact and hard.
|
