Dongguan Ming Rui Ceramic Technology Co.,ltd
Dongguan Ming Rui Ceramic Technology Co., Ltd
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Feature of Zirconia Ceramic Ring :
1) A variety of specifications available.
2) Satisfy various technical request
3) Lower medium spoilage
4) Good insulation performance and high temperature resistance
5) Stiffness texture
6) Used in all electric products and electric heating products
We can supply the products according to customer's drawings, samples and performance requirement.
| Processing technology | |
| Process range (mm) | |
| Outside Diameter | 1---300 |
| Inside Diameter | 0.5---300 |
| Length | 0.5---800 |
| Accuracy of working (mm) | |
| Perpendicularity | 0.01 |
| Concentricity | 0.01 |
| Roundness | 0.005 |
| Straightness | 0.005 |
| Parallelism | 0.01 |
| Planeness | 0.005 |
| Roughness | 0.05 |
| Fit clearance | 0.005 |
| Properties | Units | 95 Alumina | 99 Alumina | ZrO2 |
| Density | g / cm³ | 3.65 | 3.92 | 5.95-6.0g/cm³ |
| Water absorption | % | 0 | 0 | 0 |
| Coefficient of thermal expansion | 10-6/K | 7.9 | 8.5 | 10.5 |
| Modulus of Elasticity Young's Mod | GPa | 280 | 340 | 210 |
| Poisson's ratio | / | 0.21 | 0.22 | 0.3 |
| HV Hardness HV | MPa | 1400 | 1650 | 1300-1365 |
| Flexural Strength @ room temperature | MPa | 280 | 310 | 950 |
| Flexural Strength @700°C | MPa | 220 | 230 | 210 |
| Compressive Strength @ room temperature | MPa | 2000 | 2200 | 2000 |
| Fracture Toughness | MPa *m 1/2 | 3.8 | 4.2 | 10 |
| Heat conductivity @ room temperature | W/ m*k | 18-25 | 26-30 | 2-2.2 |
| Electrical Resistivity @ room temperature | Ω*mm2 /m | >1015 | >1016 | >1015 |
| Max use temperature | °C | 1500 | 1750 | 1050 |
| Resistance to acid alkaline | / | high | high | high |
| Dielectric Constant | / | 9.5 | 9.8 | 26 |
| Dielectric Strength | KV/mm | 16 | 22 | / |
| Thermol Shock Resistance | △ T ( °C ) | 220 | 180-200 | 280-350 |
| Tensile Strength @ 25 °C | MPa | 200 | 248 | 252 |
Company information
Who Are We?
Mingrui is a professional factory with years OEM experience in manufacturing industrial ceramic parts.
What Do We Do?
We produce (OEM ) strengthened structure zirconia and alumina ceramic rod,tube, shaft, plate, sleeve, valve, plunger, bearing, nozzle and ceramic arm, they are applicable to instruments, medical instruments, clocks and electronic products, mills, energy and power, machine and metals, autocar and military, spaceflight and some other high-end fields.
All of our products with certificates, such as , CE, TUV, and so on.
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