Alumina Insulation Tube
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Advantages of Alumina Insulation Tube
▪ Alumina insulation tubes have extremely high electrical resistivity, which can effectively prevent current leakage, avoid short circuits between thermocouple wires, ensure accurate transmission of electrical signals, and thus improve the accuracy of thermocouple temperature measurement, providing reliable data for temperature monitoring in industrial production processes.
▪ Alumina insulation tubes, with high melting point and good thermal stability. This not only ensures the integrity of the protective tube itself, but also prevents damage to the thermocouple wire caused by high temperatures, ensuring the normal operation of the thermocouple under high temperature conditions and obtaining accurate temperature data.
▪ Alumina insulation tubes have stable chemical properties and are not easily reactive with surrounding chemicals, avoiding damage to the protective tube caused by chemical reactions and affecting the normal operation of thermocouples. This prolongs the service life of thermocouples and reduces maintenance and replacement costs.
▪ The thermal expansion coefficient of alumina insulation tubes matches well with the thermocouple metal wire. During temperature fluctuations, the thermal stress between the two is relatively small, which can prevent the protective tube from breaking or the metal wire from being damaged due to thermal stress, ensuring that the thermocouple can work stably under different temperature conditions.
Applications of Alumina Insulation Tube
1. Alumina insulation tubes are commonly used for insulation and support of electronic components. For example, in some high-voltage electrical equipment, reliable insulation materials are needed to isolate components with different potentials and prevent the occurrence of leakage and short circuits.
2. Alumina insulation tubes can be used as shaft sleeves, bushings, and other components, which not only provide insulation but also withstand certain mechanical pressure and wear, improving the service life and accuracy of equipment.
3. It are widely used in aircraft engines, satellites, and other equipment. For example, in the hot end components of aircraft engines, alumina insulation tubes can be used to protect sensors and circuits, ensuring their normal operation in environments with high temperature, high pressure, and strong airflow erosion.
Size,Performance index
Insulation tube (extrusion) Specification Table:
Insulation tube (extrusion) 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℃ coefficientofthermalexpansion | 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
Q: Are you trading company or manufacturer?
A: We are made alumina insulation tubes factory.
Q: How long is your alumina insulation tubes delivery time?
A: Generally it is 5-10 days if the alumina insulation tubes are in stock. Or it is 15-30 days .if the goods are not in stock, it is according to quantity.
Q: Do you provide alumina insulation tubes samples? Is it free or extra?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment?
A: 100% in advance. payment
Certificates
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.
