Manufacturing process for Advanced Ceramics
2 year ago
Yttrium Stabilized Zirconia Ceramic Ball Valve
As the fuction of valve in all sealing devices or system work like the heart of human being, when the valve run into problems, we bet it's a such annoying case. That's why the importance for the choice for raw material underline significantly. In our recent world, technical ceramics have been proven and recoganized as a ideal option for making ceramic valves, especially zirconia ceramics, alumina ceramics, silicon nitride silicon carbide ceramics. You will know clearly why people prefer using zirconia ceramics as valve trim materials from following:
S/N
Property
Value and strength
1
Hardness
The value is beyond 1300 MPa, a little bit lower than diamond
2
Abrasive resistance
YSZ zirconia offer 30 times wear-resistance than hard alloy metal
3
Fracture toughness
The value is 6.5~8 MPa √m， It's far higher than conventional metal
4
Mechanical strength
The flexural strength ≧1990 MPa and compressive strength ≧ 1990MPa
5
Corrosion resistance
It's suitable for various acids and akalis and bases environments
6
Low friction and self-lubrication
The dynamic friction coefficient to be 0.1~0.2 and no need lubricant
7
High-temperature resistance
The mechanical strength would be maintained well under 1000℃
8
Resistance to oxidation
It won't rust in the air at all, whatever how humidity and harsh conditions
Typical applications
In common case, the ceramic ball valve need to be diamond-like polished with their remarkable characteristics. They are widely used in corrosion and abrasive fluids with demanding in severe conditions, specific applications as ceramic butterfly valves, ceramic ball valves,ceramic globe valves,ceramic rotary valves, ceramic sliding gate valves and ceramic linear control valves.
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