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Aluminum Oxide (Al2O3) Protective Tube - High Temperature

fine ceramics

Aluminum Oxide (Al2O3) Protective Tube - High Temperature

Item Number : KM-C07

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Application

Alumina oxide CeramicsTubes are often used as sheaths or housings for thermocouples (temperature sensing devices). Is a ceramic tube mainly made of aluminum oxide (aluminum oxide). Alumina ceramics have excellent high temperature resistance, mechanical strength and chemical inertness, making them suitable for a variety of industrial applications. Alumina ceramic tubes are used to protect thermocouples from harsh environments such as extreme temperatures, corrosive gases, or abrasive substances.They feature an open design and are available in single, dual, quadruple or multi-hole configurations to accommodate different thermocouple arrangements. They offer an enclosed, single-bore design that protects sensitive thermocouple wires from harsh environments while allowing accurate temperature measurements.

  • Thermocouple protection: Alumina ceramic tubes are widely used as protective sleeves for thermocouples in various industries, including metal refining, glass manufacturing, chemical processing, power generation, etc.
  • Furnace and Kiln Applications: These tubes are used as components in high temperature furnaces, kilns and heating systems where they provide insulation and protect sensitive components from harsh environments.
  • Semiconductor industry: Alumina ceramic tubes are used in semiconductor manufacturing processes such as chemical vapor deposition (CVD) or physical vapor deposition (PVD), where accurate temperature measurement is critical.
  • Laboratory equipment: Can be used in laboratory environments for high temperature experiments, sample preparation or as protection for sensitive measuring equipment.

Detail & Parts

High temperature aluminum protection tube detail 1
High temperature alumina protection tube

High temperature alumina protection tube detail 2High temperature alumina protection tube detail 3

High temperature alumina protection tube detail 4High temperature alumina protection tube detail 5

High temperature alumina protection tube detail 6

High temperature alumina protection tube detail 7
Alumina ceramic tube thermocouple protection tube double hole

Technical specifications

High temperature alumina protection tube

Ф1*Ф0.3mm (double holes) Ф3*Ф0.7mm (double holes) Ф2*0.4mm (four holes)
Ф1.5*Ф0.5mm (double hole) Ф5*Ф1.5mm (double holes) Ф4*Ф1mm (four holes)
Ф2*Ф0.5mm (double hole) Ф5.5*Ф1.5mm (double holes) Ф5*Ф1.2mm (four holes)
Ф2.5*Ф0.7mm (double holes) Ф8*Ф2mm (double holes) Ф8*Ф2mm (four holes)

Alumina ceramic tube thermocouple protection tube double hole

Ф1*0.3mm Ф2*0.3mm Ф3*0.7mm Ф4*1.5mm Ф5.5*1.5mm Ф8*2mm
Ф1.2*0.3mm Ф2*0.5mm Ф3.5*0.8mm Ф4.5*1.2mm Ф6*1.8mm Ф8*2.4mm
Ф1.4*0.4mm Ф2*0.6mm Ф3.5*1mm Ф5*1.2mm Ф6.5*1.8mm Ф10*2.7mm
Ф1.5*0.4mm Ф2.5*0.7mm Ф4*1.2mm Ф5*1.5mm Ф6.5*2mm Ф7*2mm

The produce we show are available in different sizes and custom sizes are available on request.

Advantages

  • High temperature resistance: Alumina ceramics can withstand extremely high temperatures, typically up to 1800°C (3272°F), which makes it suitable for applications involving high temperatures or rapid temperature changes.
  • Mechanical Strength: Alumina ceramic tubes exhibit excellent mechanical properties, including high hardness, stiffness, wear resistance, and impact resistance. They can withstand thermal shock and mechanical stress commonly found in industrial environments.
  • Chemical inertness: Alumina ceramics are chemically stable and resistant to most acids, alkalis and corrosive gases. This makes it ideal for protecting thermocouples in aggressive chemical environments or in processes involving strong acids or bases.
  • Electrical Insulation: Alumina ceramic is an electrical insulator, which means it does not conduct electricity. This characteristic is very important when using thermocouples to measure temperature in live environments.

FAQ

What are the applications of Boron Nitride ceramic parts?

Boron Nitride ceramic parts find applications in various industries. They are commonly used in high-temperature environments, such as in thermal management systems, crucibles, heaters, and insulators. Due to their excellent thermal conductivity, Boron Nitride ceramic parts are used as heat sinks, substrates for electronic devices, and components in high-power electronics. They are also utilized in the aerospace industry for applications requiring lightweight and high-temperature resistance, such as rocket nozzles and thermal shields. Boron Nitride ceramic parts are also used in the semiconductor industry as wafer carriers, crucibles for crystal growth, and insulators. Additionally, they find applications in the chemical industry, where their chemical inertness and resistance to corrosion make them suitable for handling corrosive materials.

What are muffle furnace used for?

Muffle furnaces are mainly used for high-temperature applications in industrial manufacturing and laboratory environments. They provide a controlled and insulated environment for heating materials, allowing precise temperature control. Muffle furnaces are ideal for ashing samples, heat-treating applications, and materials research. They are commonly used for melting glass, creating enamel coatings, technical ceramics, soldering, and brazing. Muffle furnaces use technology and design to achieve greater control of temperature uniformity and isolate heated materials from combustion contaminants.

What are the main types of rubber processing machines?

The main types of rubber processing machines include twin screw extruders, plate vulcanizing presses, open mixing mills, small lab rubber calendering machines, lab internal rubber mixers, lab plastic PVC calenders, automatic high temperature heat presses, and more. Each type is designed for specific tasks such as mixing, vulcanizing, calendering, and extruding rubber materials.

What are the common applications of alumina crucibles?

Alumina crucibles have diverse applications in industries such as metallurgy, ceramics, chemistry, and materials research. They are commonly used for high-temperature processes, including melting, calcination, and sintering of metals, alloys, and ceramics. Alumina crucibles are also utilized in the production of catalysts, glass, and advanced materials. In laboratories, they are used for sample preparation, heating, and chemical reactions. Additionally, alumina crucibles find applications in thermal analysis techniques such as differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).

What are the advantages of using ceramic crucibles?

Ceramic crucibles offer several advantages over other types of crucibles. Firstly, they have excellent thermal resistance, allowing them to withstand high temperatures without cracking or warping. Ceramic crucibles are also chemically inert, meaning they do not react with most substances, making them suitable for a wide range of applications. They are also non-porous, ensuring that there is no contamination or absorption of materials during heating or melting processes. Ceramic crucibles are highly durable and long-lasting, making them a reliable choice for repeated use. Additionally, ceramic crucibles can be manufactured in various shapes and sizes to accommodate different experimental or industrial requirements.

How are high-purity graphite crucibles made?

High-purity graphite crucibles are typically manufactured through a process called isostatic pressing. In this method, graphite powder is placed in a rubber mold, and then subjected to high pressure from all directions. This pressure compacts the graphite particles into a dense and uniform crucible shape. The crucible is then heated to a high temperature to remove any impurities and improve its purity.

What are the advantages of using Boron Nitride ceramic parts?

Using Boron Nitride ceramic parts offers several advantages. Firstly, their high thermal conductivity allows for efficient heat transfer, making them ideal for applications requiring heat dissipation or thermal management. Secondly, Boron Nitride ceramics exhibit excellent electrical insulation properties, making them suitable for electrical and electronic applications. They have low dielectric loss and high dielectric strength, allowing for reliable electrical insulation even at high temperatures. Additionally, Boron Nitride ceramic parts have a low coefficient of friction, providing excellent lubrication and wear resistance in applications where low friction is desired. They are also chemically inert, making them resistant to most acids, alkalis, and molten metals. Boron Nitride ceramic parts can withstand high temperatures without significant deformation or degradation, making them suitable for use in extreme environments.

What are the types of muffle furnace?

Box furnace, tube furnace, crucible furnace, split furnace, vacuum furnace, and multi-zone furnace are some types of muffle furnaces. The choice of muffle furnace depends on the specific application and requirements of the user.

What is the principle of operation for a twin screw extruder plastic granulation machine?

A twin screw extruder plastic granulation machine operates by mixing and processing raw materials like engineering plastics, modified plastics, waste plastics, and masterbatches through a twin screw mechanism. This machine ensures thorough mixing and processing for various plastic materials.

What are the advantages of using alumina crucibles?

Alumina crucibles offer several advantages in high-temperature applications. Firstly, they have excellent thermal shock resistance, allowing them to withstand rapid heating and cooling without cracking. Alumina crucibles also have high chemical resistance, making them suitable for use with acids, bases, and other corrosive materials. They have low electrical conductivity, which is beneficial for preventing electrical interference in certain applications. Alumina crucibles are also inert and do not react with most substances, ensuring the purity of the materials being processed. Additionally, they have a long lifespan and can withstand repeated use at high temperatures.

What are some common uses of ceramic crucibles?

Ceramic crucibles have a wide range of applications across various industries. They are commonly used in laboratories for heating, melting, or calcining substances during experiments or sample preparations. Ceramic crucibles are also widely used in metal casting and alloy production processes, as they can withstand the high temperatures required for melting metals. They are used in the production of ceramics, glass, and semiconductors, where precise temperature control and chemical resistance are crucial. Additionally, ceramic crucibles find applications in the pharmaceutical and chemical industries, as well as in research and development, where they are used for analyzing and testing materials under extreme temperature conditions.

What are the common applications of high-purity graphite crucibles?

High-purity graphite crucibles have a wide range of applications in industries such as metallurgy, foundries, and laboratories. They are commonly used for melting and casting non-ferrous metals, including aluminum, copper, and precious metals. High-purity graphite crucibles are also utilized in the production of alloys and high-temperature ceramics. They are essential in processes such as chemical analysis, spectroscopy, and sample preparation in laboratories. Additionally, these crucibles find applications in the semiconductor industry for the melting and growing of silicon and other semiconductor materials.

What considerations should be made when selecting Boron Nitride ceramic parts?

Several considerations should be made when selecting Boron Nitride ceramic parts. Firstly, the specific application requirements should be evaluated, such as temperature range, electrical insulation properties, thermal conductivity, mechanical strength, and chemical resistance. This will help determine the appropriate grade or formulation of Boron Nitride ceramic to select. Secondly, the design and geometry of the ceramic part should be considered to ensure that it can be manufactured using the available processes and equipment. The dimensional tolerances and surface finish requirements should also be taken into account. Additionally, the cost and availability of the Boron Nitride ceramic parts should be considered, as different manufacturing processes and grades of Boron Nitride can vary in cost. It is advisable to consult with manufacturers or experts in the field to ensure that the selected Boron Nitride ceramic parts meet the specific application requirements.

What is muffle furnace in chemistry?

A muffle furnace is a type of oven equipment used in chemistry that can reach high temperatures and provides a controlled and insulated environment for heating materials, allowing precise temperature control. It separates the object to be heated from all byproducts of combustion from the heat source. Muffle furnaces are used in solid-state reactions, such as reducing metals or creating oxides, and for limiting oxygen exposure in materials. They are also used in high-temperature chemical vapor deposition processes and are ideal for ashing samples, heat-treating applications, and materials research.

What is the purpose of a plate vulcanizing press in rubber processing?

A plate vulcanizing press is used for the vulcanization of rubber products. Vulcanization is a critical process in rubber manufacturing that improves the material's strength, elasticity, and resistance to heat and chemicals.

How should alumina crucibles be handled and maintained?

Proper handling and maintenance of alumina crucibles are crucial to ensure their longevity and optimal performance. When handling, it is important to avoid dropping or impacting the crucibles to prevent cracking or damage. They should be stored in a clean and dry environment to avoid contamination. Regular cleaning of the crucibles is necessary to remove any residual materials or impurities. This can be done using a soft brush, mild detergent, or solvents suitable for alumina. It is recommended to preheat the crucibles before use, especially when subjected to rapid temperature changes, to prevent thermal shock. Crucibles should be inspected for cracks, erosion, or other damage, and if any issues are found, they should be replaced to maintain the quality of the materials being processed. Following the manufacturer's guidelines for maintenance and handling is essential.

How can I choose the right ceramic crucible for my application?

When choosing a ceramic crucible for a specific application, several factors should be considered. Firstly, the temperature range required for the application should be determined, as different types of ceramics have varying maximum temperature limits. It is important to select a crucible that can withstand the expected temperature without deformation or damage. Secondly, the size and capacity of the crucible should be considered to ensure it can accommodate the required quantity of material. The shape and design of the crucible should also be compatible with the experimental setup or industrial process. Additionally, the chemical compatibility of the crucible with the substances being used should be assessed to ensure there will be no adverse reactions or contamination. Consulting with suppliers or experts in the field can help in selecting the most suitable ceramic crucible for specific applications.

What factors should be considered when selecting high-purity graphite crucibles?

When selecting high-purity graphite crucibles, several factors should be considered. Firstly, the size and capacity of the crucible should align with the intended application and the amount of material to be melted or processed. The crucible's thermal conductivity, thermal shock resistance, and chemical compatibility should be evaluated to ensure they meet the specific process requirements. It is important to select crucibles made from high-quality graphite material with high purity levels to minimize contamination and ensure excellent performance. The crucible's design and construction should also be considered, such as the presence of handles or pouring spouts for easy handling. Additionally, it is advisable to consult with manufacturers or experts in the field to ensure the selection of the most suitable high-purity graphite crucibles for specific applications.

What manufacturing processes are used to produce Boron Nitride ceramic parts?

Several manufacturing processes can be used to produce Boron Nitride ceramic parts. The most common methods include hot pressing, hot isostatic pressing (HIP), and slip casting. Hot pressing involves compacting Boron Nitride powders under high pressure and temperature to form a dense ceramic. HIP involves subjecting the Boron Nitride powder compact to high temperature and pressure in an inert gas environment to achieve even higher density and eliminate any remaining porosity. Slip casting involves forming a slurry of Boron Nitride powder and a binder, pouring it into a mold, and then drying and firing the green body to produce the final ceramic part. Other processes, such as extrusion, injection molding, or machining, may be used for shaping and finishing the Boron Nitride ceramic parts, depending on the desired geometry and specifications.

What is the use of muffle furnace for ash?

Muffle furnaces are commonly used for ashing samples, which involves heating materials to high temperatures to determine their percentage of ash content. This process is helpful in testing and treating materials in various industries such as cement making, foundry, and nuclear sectors. The standard muffle furnace is also used for manufacturing glass, ceramics, and other materials. Overall, muffle furnaces play a vital role in material testing and treatment at high temperatures, making them a crucial apparatus in many industries.

How does an open mixing mill for rubber work?

An open mixing mill for rubber works by mixing and dispersing rubber, plastic raw materials, pigments, masterbatches, and other high molecular polymers. The machine consists of two rollers that rotate in opposite directions, ensuring uniform mixing and dispersion of the materials.

How should ceramic crucibles be handled and maintained?

Proper handling and maintenance of ceramic crucibles are essential to ensure their longevity and performance. When handling ceramic crucibles, it is important to avoid dropping them or subjecting them to sudden temperature changes, as this can cause thermal shock and result in cracking or breakage. It is advisable to use appropriate tools, such as tongs or gloves, for handling hot crucibles. After use, ceramic crucibles should be allowed to cool down gradually before cleaning. Cleaning can be done using warm water and mild detergent, followed by rinsing and drying thoroughly. It is important to avoid using harsh chemicals or abrasive materials that can damage the ceramic surface. Regular inspection should be carried out to check for any signs of wear, cracks, or discoloration, and damaged crucibles should be replaced to ensure safety and accuracy in experiments or industrial processes.

What is the temperature of muffle furnace?

The temperature range of a muffle furnace is between 800°C to 1800°C, with a maximum temperature of 1473 K (1200°C; 2192°F). It is crucial to choose a furnace that will reach the desired temperature for your applications. Muffle furnaces are commonly used in metallurgy, glassmaking, ceramics, and other industries that require materials to be melted or heated to high temperatures. It usually takes approximately an hour for a muffle furnace to reach maximum temperature.

What are the advantages of using a lab internal rubber mixer?

A lab internal rubber mixer offers advantages such as efficient mixing, kneading, and dispersing of various chemical raw materials like plastics, rubber, synthetic rubber, and low-viscosity materials. It is particularly useful for laboratory settings where precise control and small batch processing are required.

What applications does a small lab rubber calendering machine have?

A small lab rubber calendering machine is used for producing thin, continuous sheets of plastic or rubber materials. It is commonly employed in laboratories and small-scale production facilities for creating films, coatings, and laminates with precise thickness and surface finish.

How does an automatic high temperature heat press machine function?

An automatic high temperature heat press machine is designed for pressing, sintering, and processing materials in a high temperature environment. It can operate at temperatures ranging from hundreds to thousands of degrees Celsius, making it suitable for various high temperature process requirements.

What makes a lab blown film extrusion machine useful?

A lab blown film extrusion machine is useful for detecting the feasibility of film blowing of polymer materials, assessing the colloid condition in the materials, and evaluating the dispersion of colored dispersions and extrudates. It is essential for research and development in polymer processing.
View more faqs for this product

4.8

out of

5

The quality of this alumina tube is top-notch. It's durable and can withstand high temperatures, making it perfect for my lab's needs.

Martin Maestri

4.9

out of

5

The alumina tube arrived quickly and in perfect condition. It's exactly what I needed for my research project.

Olivia O'Brien

4.7

out of

5

I'm impressed with the value for money of this alumina tube. It's affordable and works just as well as more expensive brands.

Lucas Lane

4.8

out of

5

The alumina tube is a great addition to my lab equipment. It's easy to use and clean, and it helps me get accurate results.

Emma Edwards

4.9

out of

5

The alumina tube is a must-have for any lab that works with high temperatures. It's durable and reliable, and it helps protect my equipment.

Oscar Olsen

4.7

out of

5

I'm very satisfied with the alumina tube. It's well-made and has helped me improve the accuracy of my experiments.

Ava Anderson

4.8

out of

5

The alumina tube is a great value for money. It's affordable and works just as well as more expensive brands.

Liam Brown

4.9

out of

5

The alumina tube is a great addition to my lab equipment. It's easy to use and clean, and it helps me get accurate results.

Isabella Garcia

4.7

out of

5

The alumina tube is a must-have for any lab that works with high temperatures. It's durable and reliable, and it helps protect my equipment.

Mateo Hernandez

4.8

out of

5

I'm very satisfied with the alumina tube. It's well-made and has helped me improve the accuracy of my experiments.

Mia Morales

4.9

out of

5

The alumina tube is a great value for money. It's affordable and works just as well as more expensive brands.

Emma Rodriguez

4.7

out of

5

The alumina tube is a great addition to my lab equipment. It's easy to use and clean, and it helps me get accurate results.

Oliver Smith

4.8

out of

5

The alumina tube is a must-have for any lab that works with high temperatures. It's durable and reliable, and it helps protect my equipment.

Amelia Jones

4.9

out of

5

I'm very satisfied with the alumina tube. It's well-made and has helped me improve the accuracy of my experiments.

Liam Williams

4.7

out of

5

The alumina tube is a great value for money. It's affordable and works just as well as more expensive brands.

Isabella Garcia

4.8

out of

5

The alumina tube is a great addition to my lab equipment. It's easy to use and clean, and it helps me get accurate results.

Mateo Hernandez

4.9

out of

5

The alumina tube is a must-have for any lab that works with high temperatures. It's durable and reliable, and it helps protect my equipment.

Mia Morales

4.7

out of

5

I'm very satisfied with the alumina tube. It's well-made and has helped me improve the accuracy of my experiments.

Emma Rodriguez

4.8

out of

5

The alumina tube is a great value for money. It's affordable and works just as well as more expensive brands.

Oliver Smith

PDF - Aluminum Oxide (Al2O3) Protective Tube - High Temperature

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Catalog of Fine Ceramics

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Catalog of High Purity Graphite Crucible

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Catalog of Boron Nitride Ceramics

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