Low Friction Zirconia Ceramic Valve Block Corrossion Resistant
Tag key words : Ceramic Valve Block
Mingrui Currently developing a way to use high-precision and high
wear resistance of ceramics as a faucet control valves, greatly
improving the quality of faucet, price and life. But this newly
developed products are still used by conventional sealing rubber
and other soft materials as ceramic pad control valve at the bottom
of the leak components, limiting its bearer can not reach the
limit, it is easy due to the force generated by ectopic defects.
Figure 1 and Figure 2, the valve device body 10 generally comprises
a faucet, ceramic control valve 20 and the rotary dial 13. Faucet body 10 has a bearing ring surface 11 and chamber 12 is
screwed. Ceramic control valve 20 groups located in the faucet body
10, and by the top rotary dial the actuator 13.
Such conventional ceramic control valve 20 includes a cylindrical
body 21, the shaft 30, the spin valve block 35, the static valve
block 39, 42 and the pressure auxiliary rotary sealing pad 46.
Manufactured from the highest purity Zirconia, our zirconia Rotors
provide the NMR spectroscopist with the ultimate alternative for
analysis of solid samples. The need to solvate solid samples is
eliminated. They are available for most of the present solid state
NMR spectrometers.
Our are carefully examined for material irregularities by various
methods before and after the precision machining process.
High precision (which becomes a necessity for proper spinning
performance) is maintained in the manufacture of the end caps. Most
Zirconia end caps are fitted with o-rings for better sealing. Some
caps have axial holes for venting.
Mingrui Ceramic utilize super-precision, wear-resistant ceramic
stators of silicon nitride or zirconia. MAS spinner materials must
be chosen carefully based on background signals and temperature
ranges. Ceramic Valve Block of various materials are available to provide fast spinning with
limited background problems.
Advantages of Ceramic Valve Block
- High strength
- High toughness
- Excellent wear resistance
- High hardness
- Low thermal conductivity
- Good chemical and corrosion resistanc
Applications of Ceramic Valve Block
- Various wear parts for wear applications
- Valves and pump components
- Ceramic plain, balls and roller bearings
- Tubes, fixtures etc. for High temperature
- Copper tube extruding & reducer dies
- Thermal insulation components
- Wear resistance and Cutting blades
- Ceramic knives
- Grinding media
About Ceramic Valve Block :
Zirconia materials are used in very high wear applications under
very high pressure requiring improved fracture toughness and
stiffness over alumina. Ceramic Valve Block is noted for its high strength, toughness, wear and thermal
properties. Its high material cost usually warrants its usage
extending longer life and reduce down time where alumina fails in
this applications.
During manufacture, the zirconia powder is combined with oxides
such as Yttria, magnesia or tetragonal and the material is said to
be partially stabilised or even it can be fully stabilised if
required, varying the composition allows different properties to be
enhanced.
Yttria (Y-PSZ) stabilised zirconia
Ceramic Valve Blockare mainly used for excellent wear resistance up to 400’C
temperature while Magnesia (MgO-PSZ) zirconia are very good at high
temperature offering excellent thermal shock and also wear
resistance. Y-TZP Zirconia material has tetragonal in structure and
has the highest flexural strength of all the zirconia based
materials. The fine grain size of Y-TZP lends itself to be used in
cutting tools where a very sharp edge can be achieved and
maintained due to its high wear resistance. The fine grade size
leads to a fully dense with excellent mechanical strength,
corrosion resistance, impact toughness, thermal shock resistance
and very low thermal conductivity.
Properties of Ziroconia Materials
| Magnesia ZrO2+MgO | Yttria ZrO2+Y2O3 | Tetragonal ZrO2+ YTZP | Toughened ZrO2+Al2O3 |
|---|
| Density- g/cm3 | 5.70 | 6.02 | 6.04 | 5.5 |
| Water Absorption-% | 0.00 | 0.00 | 0.00 | 0.0 |
| Compressive strength-Mpa | 1700 | 2000 | 4000 | 2000 |
| Flexural Strength – Mpa | 600 | 950 | 2500 | 1800 |
| Fracture Toughness- Mpa.m1/2 | 8-9 | c | 10 | 8 |
| Young Modulus-Gpa | 250 | 205 | 210 | 220 |
| Max. Temperature °C | 1000 | 1000 | 1000 | 1000 |
| Thermal Conductivity-W/m’K | 2.5 | 2.0 | 2.0 | 6.0 |
| Thermal Expansion of Coefficient linear -10-6/°C | 10.0 | 10.0 | 11.0 | 9.0 |
| Volume resistance – Ohm cm | 1010 | 1010 | 107 | n/a |
| Dielectric Constant 1MHz | 28 | 8.3 | 2.4 | n/a |
| Dielectric Strength – kV/mm | 9.0 | 9.0 | 8.7 | n/a |
| General Characteristics of Materials: |
| Characteristic | Ceramics | Metals | Polymers | Refractory |
| Density | Low to High | Low to High | Low | Low to Medium |
| Hardness | High | Medium | low | Medium |
| Toughness | low | High | Medium | low |
| Wear Resistance | High | Medium | low | Medium |
| Tensile Strength | Low to Medium |
High | low | low |
| Compressive Strength | High | Medium to High | low to Medium | High |
| Young’s Modulus | Medium to High | Low to High | Low | Medium |
| Dimensional Stability | High | low to Medium | low | / |
| Thermal Expansion | Low to Medium | Medium to High | High | low |
| ThermalConductivity | Medium | Medium to High | Low | Medium |
| Thermal Shock | Low | Medium to High | High | low to Medium |
| Electrical Resistance | High | low | High | / |
| Chemical Resistance | High | low to Medium | Medium | / |
| Oxidation Resistance | Medium to High | low | low | / |
| Machinability | Medium | low | Medium | / |
| Product Name | Low Friction Zirconia Ceramic Valve Block Corrossion Resistant |
| Material | zirconia ceramic |
| Color | white or black or customed |
| Standard | according the request of customer |
| Grade | first class |
| Brade | Rock |
| Thread | coarse, fine |
| Use |
FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is
15-20 days if the goods are not in stock, it is according to
quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay
the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30%
T/T in advance ,balance before shippment.
If you have any other question, pls feel free to contact us .
