Dongguan Ming Rui Ceramic Technology Co.,ltd
Dongguan Ming Rui Ceramic Technology Co., Ltd
Add to Cart
High Strength Precision Alumina Ceramic Seal Ring Structure Ceramic
Intriduction
Alumina ceramic is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss and stable electrical performance characteristics. Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products. We can make the part by hot injection pressing, dry pressing, 200T isostatic pressing and extrusion productive technology etc.
Material:
| Name | Unit | Steatite | Alumina | Zirconia | |
| Content | % | ≥95 | ≥99 | ≥94 | |
| Density | g/cm3 | 2.7 | 3.65 | 3.8 | 6 |
| Max Tem. | °C≥ | 1500 | 1750 | 1050 | |
| Hardness (HRA) |
75 | 82 | 88 | 85 | |
| flexural strength | MPa≥ | 350 | 500 | 1000 | |
| 200 | |||||
| Elasticity | MPa | 900 | 3400 | 3600 | 5000 |
| Water absorption | % | 0 | 0 | 0 | 0 |
| Heat expansion | ×10-6/°C(40-800°C) |
6-7.5 | 7.8 | 8 | 11 |
| Thermo conductivity | W/m·K( 20°C) | 22 | 28 | 2.6 | |
| 17 | |||||
| Thermal Resistance | °C |
| 200 | 200 | 300 |
| Volume Resistivity | Ω·cm (100°C) |
1012 | 1012 | 1012 | 1012 |
| dielectric strength | V/m | 15×106 | 15×106 | 11×106 | |
| 10×106 | |||||
| dielectric constant | 9 | 9.8 | 33 | ||
| (1MHz) | 6 | ||||
| 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 | /
|
Product Picture:
Company Introduction:
Dongguan Ming Rui Ceramic Technology Co., LTD., a professional manufacturer of machined ceramic parts, has 10 senior engineers and lots of technicians. We produce strengthened structure zirconia ceramic bar, ceramic tube, ceramic shaft, ceramic plate, ceramic sleeve, ceramic valve, ceramic plunger and ceramic arm. The products are applicable to instruments, medical instruments, clocks and electronic products, mills, energy and power, machine and metals, autocar and military and some other high-end areas.
In cooperation with Tsinghua University, we've achieved great successes in particular requirements. With our professional knowledge and business experience in machined ceramic parts, low-budget and high-performance new ceramic products are made of high–quality raw materials. The value of our ceramic products is greatly increased due to the composite technology and precise processing.
Our high efficiency machined ceramic parts, perfect service and good reputation roots in our professional machined ceramic technology, continuous innovation, great sincerity and our pursuit for sustainable development. We have a unique technnology called “mirror polishing” that has improved the brightness, color, smoothness of our ceramic parts.
Factory Shows
1. Are you a manufacturer ?
Yes we are a ceramic manufacturer . We proceed with the whole process start from Powder material to forming , sintering , machining, marking , inspection , packing , we do the whole process .
2.Can you produce free samples for me ?
Yes usually , we can produce free samples for you but it is up to the product complexity .
3.What terms can you accept for payment ?
T/T, L/C , Western union , Money Gram and Paypal is welcome , but paypal and western union only for small -sum payment.