Fine grain, high-grade alumina ceramic is the industrial workhorse material for combating sliding and fine particle abrasion. Alumina ceramic has a proven track record in providing excellent value in many of the most troublesome wear applications and is typically very economical and appropriate in many environments. Alumina ceramic is versatile in that it can be pre-engineered into complex tiling systems and can be applied from very thin linings of just 1.5mmm or 1/16” thick up to 76mm or 3” thick. Addtionally alumina can be formed into large monolithic pieces and cyliners that can create extremely effective abrasion resistant linings for elbows, pipes, tees and wye fittings.
These lining typical outlast other solutions, like chrome carbide or AR plate by 10 times the wear life and with less weigth.
Abrasion Resistant Alumina Ceramic
Critical to ensuring the success of any lining is it correct installation or application. Time and experience proven applications methods include installing liners using epoxy, weld in tiles, RTV silicone, high temperature mortars, interference and shrink fit, bolt in, key arched designs. The result is a superior wear system. These liners can be formed from monolithic ceramics or take the form of integrated tile systems cut in the green state to fit even the most complex fabrications.
|Technical Data||92 series||95 series|
|Hardness ( Mohs)||9||9|
This is a complex process.Our engineers understand wear problems and specify solutions to meet your operational environment. Material properties,tolerances, flatness,attachment methods, and material costs are all considered in a wear solution.
Selection of the appropriate lining method can mean the difference between success and failure in any application.
Typical applications for these ceramic liners include
- Wear Panels
- Mill Liners
- Classifier Cones
- Pulverized Fuel Piping
- Chutes & Hopper Ball Mills
- Ball mills
- Coal Pulverizer Housings
- Exhauster Housings
- Pneumatic Conveying Lines
- Cyclone Separators
- Slurry Lines
- Coal Valves
Application temperature: up to 1000°C / 1832°F depending on application and geometry.
Advantages: highly wear resistant, smooth surface that lasts, no corrosion, available from 1.5 mm thickness.
Ceramic rubber Wear Liner
Ceramic-Rubber compound lining plate is compounded by high alumina ceramics and excellent natural rubber through special process. The excellent damping performance of natural rubber greatly lowers the noise generated in the transportation, which fully settled a series of issues such as impact, abrasion and noise.
Features for this kind wear resistant lining:
1) Outstanding wear-resistant performance: the working face of ceramic-rubber compound lining plate is high alumina ceramics, the hardness of which is second to diamond, so it has excellent wear-resistance.
2) Optimum impact resistance: Compared with ordinary ceramic tiles, the Ceramic-rubber plate under the special process treatment changes the ceramic mechanism of easy breakage. With the characteristic of shock absorption of natural rubber, the impact-resistant performance of ceramic will be highly improved which is more than 10 times of ordinary ceramic tiles.
3) Effective noise reduction: excellent damping of natural rubber absorbs a great deal of vibration energy during shocking, and the flexible molecular chain within the natural rubber will be beneficial for damping, which greatly reduces the noise in transportation. Laboratory test indicates the value of noise reduction up to over 30dB.
4) Adjustable specification: the thickness of rubber and ceramic, the shape of ceramic-rubber plate can be adjusted accordingly to fit for the various conveying equipments.
The Type Of Alumina Ceramics
Alumina ceramics are divided into two types: high purity and common type.
Al2O3 content of high purity alumina ceramics is 99. More than 9% of the ceramic material, due to the sintering temperature up to 1650-1990 ℃, the transmission wavelength of 1 ~ 6 microns, usually made from molten glass to replace platinum crucible; It is used as the sodium lamp tube with its transmittance and alkali resistance. In the electronics industry, it can be used as integrated circuit board and high frequency insulation material.
Ordinary alumina ceramics are divided into 99 porcelain, 95 porcelain, 90 porcelain and 85 porcelain in accordance with Al2O3 content. Sometimes the content of Al2O3 is in 80% or 75% of the ceramic series. Among them, 99 alumina ceramic materials are used to make high temperature crucible, furnace tube and special wear-resisting material such as ceramic bearing, ceramic seal and water valve, etc. Alumina porcelain is mainly used as corrosion resistant and wear-resisting parts; In China, due to the constant incorporation of the sliding stone, the electrical performance and mechanical strength can be improved with metal sealing, such as molybdenum, niobium and tantalum, and some used as vacuum devices.
Rockwell hardness of high alumina ceramics is up to HRA80-90 which is second only to diamond and far exceeds wear-resistant steel stainless
Excellent wear resistance
The wear resistance of high alumina ceramics is 266 times that of manganese steel and 171.5 times that of high chromium cast iron.According to our investigation & follow-up to the clients, the service life of equipment can be prolonged over 10 times under the same working conditions.
High alumina ceramics are inorganic oxides with extremely stable molecular structure and no electrochemical corrosion, thus they can resist erosion of acid, alkali, salt solutions and organic Solvents.
Working temperature of high alumina ceramics can be as high as 1400℃.
High alumina ceramics have the properties of self-lubricity and inadhesion, the roughness is only 1/6 that of steel pipes thus less flow Resistance.
The density of high alumina ceramics is about 3.6g/cm3, which is only half that of steel, thus easy for construction and installation