Audited Supplier
Customized and standard optional
Industrial Ceramic
Alumina Ceramic
Ceramic Tube Insulator
High Electrical Insulation
96%, 99%, 99.5% Alumina
Dry Pressed, ISO Pressed, Hot Pressed
Over 3.65g/cm3
Fine Grinding, CNC Machining
Polishing, Glazing, Metalizing
RoHS, Reach, ISO9001
Ceramic Parts
JingHui
Individual Packaging
Max. 800mm mmx 1000mm x 30mm
China
8547100000
Product Description
Custom Industrial High Voltage Al2O3 Alumina Steatite Electrical Ceramic Insulator Tube
The accuracy achieved after precision machining
(1) Axis: roundness 0.002 mm, concentricity 0.002 mm, smoothness Ra0.1;
(2) Hole: the minimum processing hole diameter is 0.2 mm and the depth is up to 6mm;
(3) Slot: min. value to be 0.1 mm of narrow groove, and grooves with custom shapes;
(4) Plane: 0.1mm sheet with minimum processable thickness, parallelism 0.001mm, measurement tolerance 0.001 mm, finish Ra0.1;
(5) Thread: The minimum machinable M2 internal thread, the accuracy of GB-7h, the external thread size is not limited, and the accuracy is GB-6g.
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If you are searching for high alumina ceramic insulator tubes, please call us or email to us today. We do believe you will find an amazing solutions hereby.
With our machining and manufacturing capabilities, Jinghui Ceramics can offer a wide range of standard and customized alumina ceramic insulator tubes. They are regularly made from high-purity aluminum oxides such as 95%, 99%, 99.5% and 99.8% depending on the applications in the different fields. In order to cater the precise fitting relationship, some secondary processes have to be conducted at-house, including fine grinding, drilling, tapping and CNC machining. Therefore, we can meet various technical specifications and grades of ceramic tubes in the market to achieve customers' demanding needs.
Aluminum oxide (Alumina) has an extensive application due to its versatility and low cost of material than other advanced ceramics. Alumina offers high electrical insulation resistance, high-temperature resistance, strong hardness, wear resistance, and good chemical stability. This makes it an ideal material choice for applications requiring high temperature and corrosion resistance.
Aluminum oxide (Alumina) has an extensive application due to its versatility and low cost of material than other advanced ceramics. Alumina offers high electrical insulation resistance, high-temperature resistance, strong hardness, wear resistance, and good chemical stability. This makes it an ideal material choice for applications requiring high temperature and corrosion resistance.
| Option Materials | various purities of alumina from 40% to 99.8% and steatite ceramic |
| Outer diameter | 0.5 ~800 mm |
| Length | 1~1000mm |
| Roughness | To be Ra0.1 |
| Surface treatment | Polished, Glazed, Metalized availability |
| Cosmetic | Smooth surface without no contamination, deformation, and crack |
The accuracy achieved after precision machining
(1) Axis: roundness 0.002 mm, concentricity 0.002 mm, smoothness Ra0.1;
(2) Hole: the minimum processing hole diameter is 0.2 mm and the depth is up to 6mm;
(3) Slot: min. value to be 0.1 mm of narrow groove, and grooves with custom shapes;
(4) Plane: 0.1mm sheet with minimum processable thickness, parallelism 0.001mm, measurement tolerance 0.001 mm, finish Ra0.1;
(5) Thread: The minimum machinable M2 internal thread, the accuracy of GB-7h, the external thread size is not limited, and the accuracy is GB-6g.
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Datasheet of technical ceramic materials
| Property | Units | Materials | ||
| 99.5%Al2O3 | 99%Al2O3 | 95%Al2O3 | ||
| Density | g/cm3 | ≥3.85 | ≥3.80 | ≥3.60 |
| Water absorption | % | 0 | 0 | 0 |
| Hardness | HV | 1700 | 1700 | 1500 |
| Flexural strength | Mpa | ≥379 | ≥338 | ≥320 |
| Compressive strength | Mpa | ≥2240 | ≥2240 | ≥2000 |
| Fracture toughness | Mpa m1/2 | 4-5 | 4-5 | 3-4 |
| Max. service temperature (Non-loading) | ºC | 1675 | 1600 | 1500 |
| CTE (20-800ºC) | 1×10 -6 /ºC | 6.5~8.0 | 6.2~8.0 | 5.0~8.0 |
| Thermal shock | T(ºC) | ≥250 | ≥200 | ≥220 |
| Thermal conductivity(25ºC) | W/m.k | 30 | 29 | 24 |
| Volume resistivity (25ºC ) | ohm. cm | >1 x 10 14 | >1 x 10 14 | >1 x 10 14 |
| Insulation strength | KV/mm | 19 | 18 | 18 |
| Dielectric constant(1Mhz) | (E) | 9.7 | 9.5 | 9.5 |
1. Comprehesive shaping methods from small-sizes to large-sizes, from simple configuration to complex shapes
2. Scientific & rigorous quality-control system and high precision inspection equipment
If you are searching for high alumina ceramic insulator tubes, please call us or email to us today. We do believe you will find an amazing solutions hereby.
