Alumina Thermocouple Protection Tubes , Ceramic Protection Tube , Al2O3
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Product number |
GGS-0-A3-1 |
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Size |
custom made |
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Material |
Alumina、Al2O3 |
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Density |
3.8~3.9 g/cm3 |
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Purity |
99.7-99.9 |
*The above table shows the specifications and dimensions of common alumina thermocouple protection tubes measured under specific conditions. We can customize ceramic protective tubes of different sizes for you.
One end of the alumina thermocouple protection tubes is in a closed state. It is a ceramic tube designed specifically for protecting thermocouples. GORGEOUS is a professional manufacturer of advanced ceramics and can provide you with a variety of high-quality alumina thermocouple protection tubes.
We produce alumina thermocouple protection tubes with excellent performance. The thick wall tube (HWT) adopts a thicker wall thickness design to provide higher mechanical strength and durability. As an external protection for thermocouples, it can significantly improve product use. longevity, and has a variety of sizes (1mm-100mm) and purity (99.7-99.9) for you to choose from. You can also provide us with drawings for customized services.
Ceramic protection tubes can protect platinum thermocouple elements or other precious metal thermocouples working at high temperatures of 1200°C, ensuring that the thermocouples measure temperature accurately and extend their service life.
When the general protection tube (such as mullite protection tube) is used at a temperature exceeding 2200°F (1200°C), the silica contained in the protection tube will contaminate the platinum. The protection tubes we produce are usually 99.8% pure and contain only a very small amount of flux (silicon dioxide concentration is very low, less than 100 ppm). While protecting the platinum from being contaminated by silica, the superior thermal conductivity of alumina can also ensure accurate temperature measurement.
If you want to better protect the Bo thermocouple or other precious metal thermocouples, we recommend you use our alumina protection tube!
Alumina Thermocouple Protection Tube Performance
When purchasing ceramic protective tubes, it is important to consider the thermal shock characteristics and physical strength of the protective tubes.
Excellent high temperature resistance: Our alumina thermocouple protection tubes can withstand high temperatures of 1600°C under normal conditions and can be temporarily exposed to extreme high temperatures of 1900°C under special atmospheres (such as redox atmospheres).
Excellent thermal shock resistance and key to the use of protective tubes: Ceramic protective tubes should also have good thermal shock resistance, be stable at high temperatures, and not easily cracked or oxidized. (Note that the maximum temperature change rate of the protective tube during use cannot exceed 150 ° C/Hr).
Excellent corrosion resistance: Alumina has good chemical inertness and allows the ceramic protection tube to resist corrosion from most chemical substances (such as acid, alkali, and salt), which provides additional protection for the thermocouple.
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Characteristic |
Unit |
Value |
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Purity |
– |
99.8 |
99 |
95 |
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Density |
g/cm3 |
3.92 |
3.89 |
＞3.6 |
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Bending Strength |
Kpsi |
60 |
55 |
52 |
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Compressive Strength |
Kpsi |
370 |
370 |
300 |
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Operating Temperature |
℃ |
1750 |
1500 |
1250 |
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Dielectric Constant |
– |
9.8 |
9.7 |
9 |
Disclaimer: The above data are performance parameters tested based on our production experience. The performance of the product will be slightly different under different conditions and is for purchase reference only.
Alumina Thermocouple Protection Tube Process
Raw material preparation: We use high-quality alumina as raw material and are equipped with multiple advanced ball mills to grind the alumina powder to submicron level to ensure that the mechanical strength and thermal shock resistance of the ceramic protective tube are the best.
Sintering: During the sintering process, we take different measures for ceramic protection tubes of different purities. High-purity alumina will form a dense and almost single-phase ceramic during sintering. We will add a very small amount of magnesium oxide (MgO ≤ 0.05%) to control the growth of grains.
Porosity: Most ceramic tubes contain a small amount of closed pores. We use extremely advanced sintering technology to ensure that the porosity of your ceramic products is controlled below 0.4%.
Purity: We have 99.7-99.9 purity for you to choose! High purity, high performance 99.9% alumina ceramic protection tube and high quality and durable 99.7% alumina ceramic protection tube.
Precision size: Gorgeous produces alumina thermocouple protection tubes with typical specifications ranging from 1mm to 100mm. We guarantee that your product tolerance is within a reasonable minimum range. Please refer to the table below for detailed specifications.
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Parameter |
Specification Range |
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Outer Diameter (OD) |
1mm - 100mm |
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Inner Diameter (ID) |
0.5mm - 90mm |
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Length |
50mm - 2000mm |
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Wall Thickness |
0.5mm - 10mm |
Note: The above parameters and specifications are for reference only. The actual customization specifications may vary slightly depending on the process.
Application Areas of Alumina Thermocouple Protection Tubes
Thermocouples are needed in various high-temperature industries, chemical industries, power industries, etc., but some industries are often in harsh environments, and alumina thermocouple protection tubes can play a good protective role.
High-temperature industries are often in high-temperature environments. Alumina thermocouple protection tubes can effectively protect thermocouples, allowing them to accurately measure the temperature of furnace equipment.
In the chemical industry, thermocouples need to come into contact with various corrosive chemicals. Alumina ceramic tubes are corrosion-resistant and can effectively protect thermocouples from corrosion by various chemicals, extend the service life of thermocouples, and make the production process safer and more efficient.
In the power industry, thermocouples work in thermal power plants and nuclear power plants. In these environments, high temperature and high pressure are usually present. Alumina tubes have good heat resistance and electrical insulation, which can protect thermocouples from environmental influences to a large extent.
Alumina thermocouple protection tube has many superior properties such as high temperature resistance, corrosion resistance, high hardness, high wear resistance, insulation resistance, etc., making it an excellent material for protecting thermocouples.
Strong Strength
We have a professional advanced ceramic production plant with more than 15 years of professional experience and numerous technical research results in the production of advanced ceramics.
We only produce high-quality products in a 10,000-level dust-free workshop, using the best raw materials and equipment to ensure the performance of subsequent ceramics.
In the molding process, we use a variety of advanced equipment, such as injection molding machines, isostatic pressing machines (CIP), hot pressing machines, etc. These equipment and the operation of our professionals ensure the quality of alumina ceramic products.
Sintering is a critical step in the ceramic manufacturing process. We use a rapid sintering furnace (RAPID) to ensure quality while greatly shortening the ceramic sintering cycle. We also have microwave sintering furnaces, hot isostatic pressing furnaces (HIP) and other equipment for sintering different alumina ceramics. Our professionals strictly and accurately control the ceramic sintering time and temperature to further improve the performance of alumina ceramics.
We conduct strict product inspections on our products. For high-precision ceramic parts, we achieve the smallest and most reasonable tolerances;
A group of R&D teams with rich professional knowledge are at your service at any time. We enjoy a good reputation at home and abroad and are appreciated by many partners.
pack
Gorgeous carefully packs each product to prevent damage during transportation. We ensure that the alumina thermocouple protection tubes delivered to you are of high quality and complete.
Product display
The specific parameters of our typical alumina thermocouple protection tubes are for your reference. If you need to customize high-quality alumina thermocouple protection tubes, please contact us!
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product name |
Image |
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99% pure aluminum oxide protective tube Operating temperature: up to 1650°C Density: about 3.75 g/cm³ Thermal expansion coefficient: 8.0 × 10^-6/°C Thermal conductivity: approximately 25 W/m·K (at 1000°C) Hardness: Mohs hardness 9 Bending strength: 300 MPa |
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99.7% pure aluminum oxide protective tube Operating temperature: up to 1800°C Density: about 3.90 g/cm³ Thermal expansion coefficient: 8.2 × 10^-6 /°C Thermal conductivity: approximately 30 W/m·K (at 1000°C) Hardness: Mohs hardness 9 Bending strength: 350 MPa |
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Contact us now!
If you need high-quality alumina thermocouple protection tubes, please contact us immediately. We will serve you wholeheartedly!
