Alumina furnace tube
Advantages of Alumina furnace tube
1. Alumina furnace tubes have advantages such as high impact toughness, high compressive strength, heat resistance, and impact resistance that glass cannot match.
2. Alumina furnace tubes have excellent wear resistance and a long service life.
3. The surface of the alumina furnace tube is smooth and the friction coefficient is low.
4. Alumina furnace tubes have low volume density and light weight.
5. It can resist corrosion from various acids, alkalis, and salts, and its hardness is second only to diamonds.
6. Low thermal expansion coefficient and thermal conductivity, operating temperature up to 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.
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 |
Our factory
Jinzhou Yunxing Industrial Ceramics Co., Ltd. was established in 2000, mainly producing various types of tubular ceramic products and various industrial parts with alumina content above 99.3%. The factory covers an area of 4000 square meters.
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.
The company currently has 3 1800 ° C high-temperature furnaces and 2 1400 ° C low-temperature kilns independently designed and manufactured. The molding process is mainly based on grouting molding, and has other molding process equipment such as extrusion and hot die casting.
The company has 105 employees, including one senior ceramic engineer, three engineers, six overseas sales staff, and four professional after-sales staff.
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. Proper cleaning and inspection are necessary to ensure their suitability for subsequent applications.
Q3. Are alumina ceramic furnace tubes suitable for high-pressure applications?
A3: Yes, alumina ceramic furnace tubes can be used in high-pressure applications. 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
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2. For any other satisfaction, please also feedback to us to make our service better and better.
