High Precision Alumina Ceramic SOE Ring For Copper Drawing Machine/Innovacera
Keywords: alumina ceramics, Ceramic SOE Ring, ceramic ring, alumina ring, ceramic insulator ring, ceramic ring, ceramic insulator
1. Introduction:
Round alumina ceramic ring is used for a Ever Bright pad printing ink cup machine, electronic control, lighting and electrical temperature control and other industries.
Alumina ceramic ring tube is also used for thermostat,technical ceramic,temperature control
The temperature controllers,manufactured with 95% alumina,have revolutionary breakthrough if compared with traditional plastic parts.They are highly improved in strength,insulation performance,heat resistant performance,especially sensitivity to temperature
The main advantage for our products:
1), low dielectric loss, do not have moisture absorption;
2), higher volume resistivity and dielectric strength;
3), excellent mechanical strength, fracture toughness;
4), good chemical stability and thermal stability;
5), high size precision, no deformation, convenient assembly;
6), endure high pressure,normally do not have air hole;
7), color does not change yellow in high temperature.
2. Alumina ceramic ring features:
1) Wear -resisting
2) Resistant high temperatures
3) Good chemical stability
4) Electrical insulator
5) Hardness and low thermal expansion
6) Alkali-resisting
7) Low thermal conductivity
8) High heat conductivity
3. Properties of Alumina Material
Item | Test Condition | Unit&Symbol | 95% Al2O3 | 99% Al2O3 | 99.7% Al2O3 | |
The main chemical ingredient |
|
| Al2O3 | Al2O3 | Al2O3 | |
Bulk Density |
| g/cm3 | 3.6 | 3.89 | 3.96 | |
Maximum Use Temperature |
|
| 1450°C | 1600°C | 1650°C | |
Water absorption |
| % | 0 | 0 | 0 | |
ROHS Hardness |
|
| ≥85 | ≥89 | ≥89 | |
Flexural strength | 20° C | MPa (psi x 103) | 358 (52) | 550 | 550 | |
Compressive Strength | 20° C | MPa (psi x 103) | 2068 (300) | 2600(377) | 2600(377) | |
Fracture Toughness | K(I c) | Mpa m1/2 | 4 - 5 | 5.6 | 6 | |
Coefficient of thermal expansion | 25-1000° C | 1X 10-6/°C | 7.6 | 7.9 | 8.2 | |
|
Coefficient of thermal conductivity | 20° C | W/m °K | 16 | 30 | 30.4 | |
|
Thermal Shock Resistance | Tc | °C | 250 | 200 | 200 | |
Dielectricity constant | 1MHz.25°C |
| 9 | 9.7 | 9.7 | |
Dielectric strength |
| ac-kV/mm (ac V/mil) | 8.3 (210) | 8.7 (220) | 8.7 (220) | |
Volume Resistivity | 100°C | ohm-cm | > 1013 | > 1014 | > 1014
| |
4. We can supplyalumina ceramic ringaccording to customer's drawings, samples and performance requirement. Welcome to send your inquiry for us at any time.
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