Wear Resistant Alumina Ceramics
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Product Information
Alumina ceramic, also known as aluminum oxide or Al2O3, is an oxide ceramic widely used in industry. Alumina ceramic materials are known for their extremely high hardness and high thermal conductivity. The properties of alumina ceramics make it one of the most widely used ceramics in structural, wear and corrosive environments.
Aluminum oxide is characterized by high hardness, corrosion resistance, thermal stability, good dielectric properties (for conversion from DC to GHz frequencies), low loss tangent and stiffness.
Alumina ceramics are divided according to the Al2O3 content in the material. Common ones are: 75%, 95%, 99%, 99.5%, 99.7% alumina ceramics, etc. Usually, we choose the purity of alumina ceramics based on the performance requirements of the products we make.
Product Categories
1. Alumina Ball
Alumina balls are non-spherical aluminum oxide particles that are widely used in the petrochemical, agricultural and coatings industries.
Alumina balls can directly enter the reaction, greatly reducing the impact on the catalyst, thereby extending the service life of the catalyst. In addition, alumina balls can also be used to make surface protective coatings. After spraying on metal, plastic and other surfaces, it can improve surface hardness, corrosion resistance, wear resistance and flame retardancy.
In the electronics industry, spherical alumina balls are of great significance in the field of electronic packaging because of their excellent electrical, thermal and mechanical properties.
Particle size range: 0.3-0.4, 0.4-0.6, 0.6-0.8, 0.8-1.0, 1.0-1.2, 1.2-1.4, 1.4-1.6, 1.8-2.0, 2.0-2.2, 2.2-2.4, 2.8-3.0, 3.0-3.2, 3.2-3.5, 4.5-5.0, 5.0-5.5, 6.0-6.5, 6.5-7.0, 8, 10, 12, 15, 20.
![2](http://www.sdrobert.com/uploads/2155.jpg)
Alumina Grinding Balls
Alumina grinding balls are spherical particles made of high-purity alumina and are commonly used as abrasives or grinding media. Due to its high hardness and good wear resistance, it is also widely used in industries with high requirements for grinding and wear resistance.
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Alumina Ceramic Balls
2. 92%, 95% alumina wear-resistant ceramics(conventional, special-shaped, customized products)
![18](http://www.sdrobert.com/uploads/1838.jpg)
![19](http://www.sdrobert.com/uploads/1936.jpg)
![37](http://www.sdrobert.com/uploads/3717.jpg)
![34](http://www.sdrobert.com/uploads/3419.jpg)
![17](http://www.sdrobert.com/uploads/1744.jpg)
![微信图片_20240522152713](http://www.sdrobert.com/uploads/微信图片_20240522152713.png)
![36](http://www.sdrobert.com/uploads/3621.jpg)
![33](http://www.sdrobert.com/uploads/3325.jpg)
3. Composite Pipe
![14](http://www.sdrobert.com/uploads/1447.jpg)
4. Composite Ceramic Lining
![15](http://www.sdrobert.com/uploads/1549.jpg)
![16](http://www.sdrobert.com/uploads/1638.jpg)
Product Index
Item
|
Al2O3 >92%
|
>95%
|
>99%
|
>99.5%
|
>99.7%
|
Color
|
White
|
White
|
White
|
Cream Color
|
Cream Color
|
Theoretical Density(g/cm3)
|
3.45
|
3.50
|
3.75
|
3.90
|
3.92
|
Bending Strength(Mpa)
|
340
|
300
|
330
|
390
|
390
|
Compressive Strength(Mpa)
|
3600
|
3400
|
2800
|
3900
|
3900
|
Elastic Modulus(Gpa)
|
350
|
350
|
370
|
390
|
390
|
Impact Resistance(Mpam1/2)
|
4.2
|
4
|
4.4
|
5.2
|
5.5
|
Weibull Coefficient(m)
|
11
|
10
|
10
|
12
|
12
|
Vickers Hardness(HV 0.5)
|
1700
|
1800
|
1800
|
2000
|
2000
|
Thermal Expansion Coefficient
|
5.0-8.3
|
5.0-8.3
|
5.1-8.3
|
5.5-8.4
|
5.5-8.5
|
Thermal Conductivity(W/mk)
|
18
|
24
|
25
|
28
|
30
|
Thermal Shock Stability
|
220
|
250
|
250
|
280
|
280
|
Maximum Operating Temperature℃
|
1500
|
1600
|
1600
|
1700
|
1700
|
20℃ Volume Resistance
|
>10^14
|
>10^14
|
>10^14
|
>10^15
|
>10^15
|
Dielectric Strength(kv/mm)
|
20
|
20
|
20
|
30
|
30
|
Dielectric Constant
|
10
|
10
|
10
|
10
|
10
|
Workshop Show
![49](http://www.sdrobert.com/uploads/4910.jpg)
Construction Cases
![31](http://www.sdrobert.com/uploads/3128.jpg)
![32](http://www.sdrobert.com/uploads/3228.jpg)
Package&Warehouse
![30](http://www.sdrobert.com/uploads/3025.jpg)
![28](http://www.sdrobert.com/uploads/2827.jpg)
![42](http://www.sdrobert.com/uploads/4217.jpg)
![29](http://www.sdrobert.com/uploads/2928.jpg)
![51](http://www.sdrobert.com/uploads/5117.jpg)
![43](http://www.sdrobert.com/uploads/4312.jpg)
Company Profile
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Shandong Robert New Material Co., Ltd. is located in Zibo City, Shandong Province, China, which is a refractory material production base. We are a modern enterprise that integrates the research and development, production, sales, kiln design and construction, technology, and export refractory materials. We have complete equipment, advanced technology, strong technical strength, excellent product quality, and good reputation. Our factory covers over 200 acres and an annual output of shaped refractory materials is approximately 30000 tons and unshaped refractory materials is 12000 tons.
Our main products of refractory materials include: alkaline refractory materials; aluminum silicon refractory materials; unshaped refractory materials; insulation thermal refractory materials; special refractory materials; functional refractory materials for continuous casting systems.
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Frequently Asked Questions
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We are a real manufacturer, our factory is specialized in producing refractory materials for more than 30 years. We promise to provide the best price, the best pre-sale and after-sale service.
For each production process, RBT has a complete QC system for chemical composition and physical properties. And we will test the goods, and the quality certificate will be shipped with the goods. If you have special requirements, we will try our best to accommodate them.
Depending on the quantity, our delivery time is different. But we promise to ship as soon as possible with guaranteed quality.
Of course, we provide free samples.
Yes, of course, you are welcome to visit RBT company and our products.
There is no limit, we can provide the best suggestion and solution according to your situation.
We have been making refractory materials for more than 30 years, we have strong technical support and rich experience, we can help customers design different kilns and provide one-stop service.