Alumina furnace tube
Advantages of Alumina furnace tube
Alumina furnace tubes have advantages such as high impact toughness, high compressive strength (350Mpa), heat resistance, and impact resistance. Alumina furnace tubes has excellent wear resistance and a long service life, with a smooth surface and low friction coefficient. Low bulk density (3.88 x g/cm3), lightweight. The thermal expansion coefficient (3.8 x mm. 10-6/℃. m) and thermal conductivity coefficient are low (25 W/m.k), and the working temperature can reach 1800 ℃.
Applications of Alumina furnace tube
1. Furnace work tubes
2. Kiln furniture, components & accessories
3. Thermocouple protection tubes
4.Heater Support Elements
5. High Temperature Electrical Insulators
6. Extreme temperature measurement components
7.Ceramic Laser components
8. High voltage electrical insulators
We only make high purity alumina ceramics
1. High-purity alumina content 99.3% -99.5%, other alumina ceramics 92% -99%.
2. The color of high purity alumina product is milky white, and other products are pink or white. The higher the purity, the more transparent the color.
3. Alumina is a refractory material, the higher the purity, the better the refractory effect
4. After high-purity alumina ceramics are fired and cooled in a 1800-degree high-temperature kiln, the products are not easy to break when they encounter high temperatures. Other ceramics are fired at 1500 ℃ ~ 1800 ℃.
5. The volume density of high-purity alumina> 3.92 g / cm3 has a smooth surface and is not easily corroded by chemicals. The bulk density of other ceramics is> 3.70 g / cm3 ~> 3.85 g / cm3.
6. High purity alumina has good hardness and good wear resistance.
7. High purity alumina products have a longer service life.
How to clean alumina furnace tubes
1.Clean with detergent. Because the surface of the alumina furnace tube is very smooth and has strong corrosion resistance. During use, it will not hide many other substances.Easy to clean.
2.Use tools to flush. Because the alumina furnace tube is very wear-resistant, you can use some cleaning tools with high friction to clean it. Use some brushes and add some detergent inside, and it is easy to clean it thoroughly.
3.Use ceramic stain remover or soap. If the alumina furnace tubes are relatively dirty, you can buy ceramic cleaning agents or soap at this time. As long as you use the cleaning agent and water together, you can quickly wash away those dirty things.
Size,Performance index
Alumina Tube(open both ends)(slip casting) Specification Table:
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 |
Our factory
The company's main products are: alumina ceramic tubes, alumina ceramic crucibles, alumina ceramic rods, alumina ceramic boats, alumina ceramic plates, alumina ceramic parts, etc.
Our products are widely used in Semiconductor, Medical, Aerospace, Scientific Research, Fluid Controlling, Food Processing, Automotive, Defense, Thermal Processing, Electronic and Electrical, Mineral Processing,Textile, Pulp and Paper, Glass Processing, Mechanical Engineering, etc.
Our has established a high standard of quality system and strict quality control process, each batch of products are subjected to strict quality inspection, and different packaging requirements for different products to ensure the safe transportation of products.In order to ensure quality, the company adopts advanced finished product inspection equipment and standardized Gage calibration;Including automatic inspection equipment, coordinate measuring instrument, etc.
The service philosophy of our is meeting quality requirement and customer satisfaction. When there are problems of order, Our quickly respond to the honestly situation to the customer and give the customer the solution in short time. This service concept has resulted in the long-term cooperation between our and customers.
FAQ
Q1. What information should we supply to get a quote?
A1: Please offer the specification of ceramic tube, such as shape, dimension, quantity, application etc.
Q2. Can alumina ceramic furnace tubes be reused after use?
A2: Yes, alumina ceramic furnace tubes can be reused after use, provided they are undamaged and free from contamination.
Q3. Are alumina ceramic furnace tubes suitable for high-pressure applications?
A3: Yes, Their excellent mechanical strength and resistance to thermal and chemical stresses make them suitable for demanding conditions.
Q4. Can alumina ceramic furnace tubes withstand rapid temperature changes?
A4: Alumina ceramic furnace tubes exhibit good thermal shock resistance, allowing them to withstand rapid temperature changes without cracking or breaking. However, it's essential to choose a tube with suitable thermal shock resistance for specific application requirements.
Certification
Feedback
1. If you have any questions or questions, please contact us and we will communicate with you as soon as possible.
2. For any other satisfaction, please also feedback to us to make our service better and better.
