Alumina Ceramic Tube
Advantages of alumina ceramic tubes
1. Alumina ceramic tubes are made of high-purity aluminum oxide.
2. Alumina ceramic tubes have excellent corrosion resistance, wear resistance, and high temperature resistance.
3. Alumina ceramic tubes have precise engineering design and strict quality control.
4. Our alumina ceramic tubes meet the strictest industry standards, providing excellent protection and service life.
Application of alumina ceramic tubes
1. Furnace work tubes
2. Kiln furniture, components & accessories
3. Thermocouple protection tubes
4.Heater Support Elements
5. High Temperature Electrical Insulators
6. High voltage electrical insulators
Size,Performance index
Alumina Tube(open both ends)(slip casting) Specification Table:
Alumina ceramic performance index (Notice of Correct in Leakeage Rate）
NO. | Property | Unit | Alumina |
1 | Al2O3 | % | >99.3 |
2 | SiO2 | % | — |
3 | Density | g/cm3 | 3.88 |
4 | Water absorption | % | 0.01 |
5 | Compressive strength | MPa | 2300 |
6 | 20℃ leakage rates | Torr・L/sec | >10-11=1.33322×10-12Pa・m3/sec |
7 | Twisting in high temperature | mm | 0.2 allowed in 1600℃ |
8 | Bonding in high temperature | not bonded in 1600℃ | |
9 | 20—1000℃ coefficient of thermal expansion | mm.10-6／℃.m | 8.2 |
10 | Thermal conductivity | W/m.k | 25 |
11 | Electric insulation strength | KV/mm | 20 |
12 | 20℃direct current insulation resistance | Ohm/cm | 1014 |
13 | High-temperature insulation resistance | 1000℃ MΩ | ≥0.08 |
1300℃ MΩ | ≥0.02 | ||
14 | Thermal shock resistance | 4 times not cracked in 1550℃ | |
15 | Maximum working temperature | ℃ | 1800 |
16 | Hardness | Mohs | 9 |
17 | Flexural strength | Mpa | 350 |
Factory Equipment
Slip casting moulding: Inject the prepared slurry into the gypsum mold and let it stand for a period of time to allow the gypsum mold to absorb moisture. The slurry forms a uniform body on the inner wall of the mold.
Injection moulding: Inject a slurry containing paraffin into a metal mold at a certain temperature and pressure, and after the body cools and solidifies, perform demolding to prepare ceramic bodies.
Extrusion moulding: Suitable for long tube products, the powder is extruded into shape through an extruder.
FAQ
A1: Please offer the specification of alumina ceramic tube, such as shape, dimension, quantity, application etc.
A2: Generally it is 5-10 days if the goods are in stock. Or it is 15-30 days if the goods are not in stock, it is according to quantity.
A3: Yes, we could offer the little sample for free charge but do not pay the cost of freight.
A4: Yes, Customization can include adjustments to size, shape, and additional features to meet the specific needs of your application.
Certificate
Feedback
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2. For any other satisfaction, please also feedback to us to make our service better and better.
