Newly Machined Alumina Ceramic Porous Tubes
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Advantages of Alumina Ceramic Porous Tubes
1. High Temperature Resistance: Alumina ceramic porous tubes can withstand extreme temperatures, making them suitable for environments where thermal stability is crucial.
2. Chemical Inertness: They are chemically inert, meaning they do not react with most chemicals. This property is essential in applications involving corrosive substances or harsh environments.
3. Mechanical Strength: Despite their porosity, alumina ceramic porous tubes maintain excellent mechanical strength, ensuring durability and reliability in demanding conditions.
Manufacturing Process
1. Raw Material Selection: High-purity alumina powder is chosen as the primary raw material due to its superior properties and consistency.
2. Mixing: The alumina powder is mixed with binders and additives to achieve the desired porosity and mechanical strength.
3. Forming: The mixture is shaped into tubes using various methods such as extrusion or slip cating.
4. Drying: The formed tubes are dried to remove moisture and improve their structural integrity.
5. Firing: The dried tubes are fired at high temperatures in kilns to sinter the alumina particles, resulting in a dense ceramic structure with controlled porosity.
Application of Alumina Ceramic Porous Tubes
1. They are usually used as furnace working tubes to support high-temperature processes.
2. In the kiln, they support and organize ceramic products.
3. The thermocouple protection tube made of alumina ceramic porous tube ensures accurate temperature measurement.
4. Alumina ceramic porous tubes can be used as supporting elements for heaters.
5. Alumina ceramic porous tubes can be used as high-temperature electrical insulation components.
6. Alumina ceramic porous tubes can be used temperature measurement components.
7.In the field of ceramic lasers, alumina ceramic porous tube components contribute to the stability and performance of lasers.
Size,Performance index
Insulation tube (extrusion) Specification Table:
Insulation tube (extrusion) Specification Table:
Composition table
| NAME | CONTENT(%) |
| Al2O3 | 99.3-99.5(99.7) |
| SiO2 | 0.3-0.5 |
| CaO+MgO | 0.2-0.3 |
| K2O+Na2O | 0.2-0.35 |
| Fe2O3 | <0.1 |
| OTHER | <0.05 |
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 | Cold compressive strength | MPa | 350 |
6 | 20ºC leakage rates | Torr・L/sec | >10-11=1.33322×10-12Pa・m3/sec |
7 | Twisting in high temperature | mm | 0.2 allowed in 1600ºC |
8 | Bonding in high temperature | not bonded in 1600ºC | |
9 | 20-1000ºC coefficient ofthermalexpansion | mm.10-6/ºC.m | 8.2 |
10 | Thermal conductivity | W/m.k | 25 |
11 | Electric insulation strength | KV/mm | 20 |
12 | 20ºCdirect current insulation resistance | Ohm/cm | 1014 |
13 | High-temperature insulation resistance | 1000ºC MΩ | ≥0.08 |
1300ºC MΩ | ≥0.02 | ||
14 | Thermal shock resistance | 4 times not cracked in 1550ºC | |
15 | Maximum working temperature | ºC | 180 |
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 do we need to provide to obtain a quotation?
A1. The number of pores, diameter, hole spacing, and length of porous pipes. Purchase quantity.
A2. Because of their excellent chemical stability, alumina ceramics are used widely in acid-resistant pump impellers, pump bodies, acid-carrying pipe linings and valves. Aluminum oxide ceramics are used in the manufacture of textile wear parts and knives. This is due to their extreme hardness and wear resistance.
A3. Alumina is a very hard ceramic that is excellent at resisting abrasion and is ideal for wear-resistant inserts or products.
Q4. Is alumina ceramic porous?
A4. High purity alumina ceramics can be made into porous tubes (or alumina Al2O3), as their mechanical strength and wear resistance can better protect the safety of accessory metals.
Certificate
Feedback
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