|Place of Origin:||Hunan, China|
|Brand Name:||Jinghui ceramics|
|Certification:||RoHS, REACH, ISO|
Payment & Shipping Terms:
|Minimum Order Quantity:||10 Piece/Pieces|
|Packaging Details:||Vacuum packing with desiccant|
|Delivery Time:||4~5 weeks|
|Payment Terms:||T/T, Western Union, MoneyGram, Paypal, , L/C|
|Supply Ability:||20000 Piece/Pieces per Month|
|Product Name:||Alumina Ceramic Sleeve||Material:||High Purity Alumina Ceramic|
|Color:||Pure White, Pink, Black Optional||Shape:||Ceramic Tube, Ceramic Cylinder|
|Size:||Size Customized||Type:||Ceramic Parts|
alumina ceramic insulator,
aluminum oxide tube
Specification of the ceramic sleeve
1. Material options: aluminum oxide ceramics (from 95% to 99.8%), zirconia ceramic, Silicon carbide ceramic, steatite ceramic
2. Forming methods: Dry pressed, Extrusion, Hot pressed, Ceramic Injection molding, ISO pressed
3. Dimension capability: Min. the inner diameter can be 1mm, Max. the outer diameter can be 800mm
4. Tolerance: outer diameter can be 0.005mm, the inner diameter can be 0.01mm, the overall length can be 0.01mm
5. Surface treatment: External and internal surface to be polished, glazed or metallized
6. Secondary processing: CNC machining, lapping, grinding, precision cutting and so on
Main characteristics of alumina ceramic sleeve
1. Exceptional corrosion resistance, it can withstand various strong acid and alkali, like HF, H2SO4
2. Extraordinary electrical insulation, it always us in many high voltage, high-current application
3. Outstanding wear resistance, over 276 times in comparison with stainless steel
4. Great mechanical properties, hardness, compressive and flexural strength are much higher stainless steel
Our factory manufactures alumina ceramic sleeve as a standard ceramic product with a wide range of specifications with different grades of aluminas, including 75% alumina, 85% alumina, 90% alumina, 95% alumina, 99% alumina, 99.5% alumina, 99.8% alumina. Besides, we could formulate different purity alumina according to physical needs and applications.
Alumina can take temperatures up to 1650°C, having extremely high-temperature stability, chemical corrosion resistance, and high wear and abrasion resistance. Most items are in stock and can be pulled and shipped normally under 1 week. These smaller diameter tubes are produced by extrusion, while larger diameters are produced by hot pressed, dry press or ISO pressed. Sizes are available from 1mm OD to 800 OD in lengths up to 2000mm long.
In order to reach some special requirement, all alumina ceramic bushing can precisely proceed via fine grinding, CNC machining, lapping, and polishing, then it will obtain higher dimensional accuracy, more desirable surface.
We have been dealing with a variety of alumina ceramic sleeves in different types, such as two end open, one end closed, flanged ceramic tube, collared ceramic tue, slotted ceramic tube, half ceramic tube, double bore ceramic tube, triple-bore ceramic tube and so on.
|General||Property||Units||99.5% alumina||99% alumina||95% alumina|
|Fracture toughness||Mpa m 1/2||4-5||4-5||3-4|
|CTE (20-800℃)||1×10 -6 /℃||6.5~8.0||6.2~8.0||5.0~8.0|
|Thermal conductivity (25℃ )||W/m.k||30||29||24|
|Specific heat||1 x 10 3 J/(kg·K)||0.78||0.78||0.78|
|Electrical||Volume resistivity (25℃ )||ohm.cm||＞1 x 10 14||＞1 x 10 14||＞1 x 10 14|
|Dielectric constant (1Mhz)||(E)||9.7||9.5||9.5|
We also produce lots of different types of ceramic tubes, including threaded tube, half tube, one end tubes and so on.
1.Vacuum packing with desiccant as an inner package;
2. Then, exported carton as an outer package.
3. Finally, it will be packed with a wooden case if needed.
4. We regularly use DHL, UPS, FedEx, and TNT to ship small parcels.
5. For large volume order, we could ship it by sea as per customers' needs.
Q1: Is it available to produce customized products?
A: We always support custom-made metallic coated ceramic insulators as per different dimensions, designs, metallization, and platings.
Q2. When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price, please call us or tell us in your email so that we will proceed with your inquiry as a priority.
Q3. How long can I expect to get the sample?
A: After you pay the sample charge and send us confirmed files, the samples will be ready for delivery in 4 weeks. The samples will be sent to you via express and arrive in 3-5 workdays. You can use your own express account or prepay us if you do not have an account.
Q4. How long does the whole procedure being worked out?
A: After you place an order, the manufacturing time is about 25 working days.
Q5. How to ensure quality?
A: The dimension out of any batch will be carried out sampling inspection per International AQL standard. A 100% cosmetic inspection will be done.
Q6. Are you a factory or trading company?
A: We are a professional manufacturer. We are warmly welcome clients from worldwide to visit our factory and cooperate with us.