Overview of Active Calcined Alumina Powder for Ceramic Roller in Tunnel Kiln

Active Calcined Alumina Powder for Ceramic Roller in Tunnel Kiln is precision-engineered from 99%+ pure aluminum oxide (Al₂O₃), offering outstanding mechanical strength and thermal stability. With a maximum operating temperature of 1800°C, these rings are widely used in high-wear applications such as bearings, seals, insulators, and semiconductor processing equipment. Their exceptional hardness and corrosion resistance make them ideal for demanding industrial environments.

Key Features of Active Calcined Alumina Powder for Ceramic Roller in Tunnel Kiln

Extreme Temperature Resistance – Stable up to 1800°C with minimal thermal expansion

Superior Wear Resistance – Harder than steel, ensuring long service life

Excellent Electrical Insulation – High dielectric strength for electronic applications

Chemical Inertness – Resists acids, alkalis, and corrosive gases

Precision Machined – Tight tolerances for consistent performance in mechanical assemblies

(Active Calcined Alumina Powder for Ceramic Roller in Tunnel Kiln)

Specifications of Active Calcined Alumina Powder for Ceramic Roller in Tunnel Kiln

Active calcined alumina powder is vital for high-performance ceramic rollers in passage kilns. This product ensures rollers stand up to severe warmth and mechanical anxiety. Key specs specify its quality and efficiency. High pureness is critical. The alumina web content need to exceed 99.5%. Low degrees of pollutants like silica, iron oxide, and soda are necessary. Pollutants hurt the last ceramic buildings. Bit size circulation straight affects sintering and final density. Managed particle dimension makes certain constant packaging and shooting actions. An average bit dimension (D50) typically varies between 3 to 10 micrometers. Details surface is an additional crucial action. Values normally fall in between 2 to 6 m TWO/ g. This influences sensitivity during sintering. The alpha phase material need to be extremely high. Complete conversion to alpha alumina during calcination assurances thermal security. Alpha alumina is the stable crystal kind at heats. Bulk density affects handling and processing. Loose mass thickness often determines 0.8 to 1.2 g/cm FIVE. Tapped bulk thickness is higher, around 1.2 to 1.8 g/cm SIX. Real thickness approaches the theoretical worth for alumina, about 3.98 g/cm ³. Great flow residential properties are essential for constant developing procedures. The powder has to move smoothly via manufacturing devices. Chemical evaluation validates the reduced pollutant degrees. Sodium oxide (Na ₂ O) content is particularly critical. It has to be below 0.05% to stop fluxing and weakening at high temperatures. Silica (SiO ₂) and iron oxide (Fe ₂ O FIVE) levels likewise need limited control. They usually remain listed below 0.02% each. This powder provides superb thermal shock resistance. It offers high mechanical toughness in the terminated rollers. Put on resistance is significantly enhanced. Regular quality ensures dependable roller performance throughout the demanding tunnel kiln atmosphere. Correct choice assurances lengthy service life and minimized kiln downtime.

(Active Calcined Alumina Powder for Ceramic Roller in Tunnel Kiln)

Applications of Active Calcined Alumina Powder for Ceramic Roller in Tunnel Kiln

Active calcined alumina powder is vital for making strong ceramic rollers used in tunnel kilns. Tunnel kilns fire ceramic products like floor tiles or tableware at very heats. These kilns need rollers to relocate items through the home heating zones. Normal rollers can stop working under the warm and weight. This is where alumina powder makes a distinction.

Producers mix this unique powder right into the ceramic material for the rollers. The powder is really pure and has small particles. This provides the finished rollers exceptional properties. First, the rollers end up being much harder. Hard rollers stand up to wear far better. Continuous activity inside the kiln would harm softer rollers. Second, the rollers gain high toughness. They sustain heavy tons without breaking. This maintains manufacturing running smoothly.

Third, alumina powder offers the rollers great thermal stability. Tunnel kilns obtain very warm. Rollers need to handle this warmth without buckling or breaking. Alumina maintains its form and toughness also at peak temperature levels. This integrity is vital. Kiln closures are costly and disruptive.

Fourth, the powder assists the rollers stand up to chemical strike. Gases and fumes inside the kiln can damage materials. Alumina is inert. It does not react quickly with these severe substances. This suggests the rollers last much longer. Operators obtain even more life span before requiring substitutes.

Using this powder additionally improves the sintering procedure during roller production. Sintering bonds the ceramic fragments together securely. The fine alumina fragments assist create a dense, consistent framework. This dense structure blocks splits and boosts durability. The outcome is rollers that do regularly under difficult problems. Manufacturing facilities see less downtime and lower maintenance expenses.

Company Profile

Alumina Technology Co., Ltd,. We focus on the research and development, production and sales of alumina products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2005, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Alumina Boat, Alumina Crucible, Alumina Dish, Alumina Foam Filter, Alumina Plate, Alumina Rod, Alumina Bar, Alumina Balls, Filter Alumina, Nano Alumina Powder, Spherical Alumina Powder, ect. please feel free to contact us.(nanotrun@yahoo.com)

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Active Calcined Alumina Powder for Ceramic Roller in Tunnel Kiln

What is active calcined alumina powder for?
This powder makes ceramic rollers stronger. Tunnel kilns get very hot. Rollers move products through the kiln. Normal rollers can break. Alumina powder makes them tougher. It helps them handle the heat better. Rollers last longer this way.

Why use this powder instead of other materials?
Alumina powder is very pure. It has high hardness. It resists heat extremely well. Other materials might melt. Other materials might wear out faster. Alumina keeps its shape. This means rollers don’t warp easily. Production stays smooth.

What particle size is best?
The particle size matters a lot. Too coarse causes problems. Too fine causes problems. A medium size is usually best. Think around 3 to 5 microns. This size packs together well. It gives good density after firing. Strong rollers need good density. Check the supplier’s specs.

How much powder is needed in the roller mix?
The amount varies. It depends on the roller recipe. A typical range is 15% to 30%. Too little alumina weakens the roller. Too much makes firing difficult. It can cause cracks. Start with the supplier’s recommendation. Test small batches first. Adjust as needed.

What problems can happen using this powder?
Agglomeration is a common issue. Powder clumps form. This creates weak spots. Mixing must be very thorough. Drying shrinkage can be high. Firing needs careful control. Cracking might occur if heating is too fast. Follow mixing and firing steps exactly. Good powder dispersion prevents most problems.

(Active Calcined Alumina Powder for Ceramic Roller in Tunnel Kiln)