Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.
- Packaging the abrasion resistant pipe
- Properties of the Ceramic-lined pipe
- Ceramic-lined carbon steel pipe
- The ceramic-lined steel composite pipe
- Advantages of Ceramic lined pipe
| Sand injection test | 30% Transfer test of sludge with SiO2 | ||
| Material | Volume diminution (cm3) | Material | Volume diminution (cm3) |
| Ceamic lining Steel pipe | 0.0022 | Ceamic lining Steel pipe | 3 |
| Ceramic pipe Al2O397% | 0.0025 | S45C | 25 |
Self-propagating High-temperature Synthetic process
Self-propagating high temperature synthesis (SHS) is used to describe a process in which the initial reagents (usually powders), when ignited, spontaneously transform into products due to the exothermitic heat of reaction.
The combination of high rigidity of ceramic and high elasticity of steel gives the pipe unmatchable features as an abrasion resistant, heat resistant and corrosion resistant material for use in the fields of power generation, metallurgy, mining, and chemical industry etc.. It has many advantages over steel pipes, cast stone pipes, and steel-plastic compound pipes.
Usage of Ceramic Lined pipe
The ceramic lined pipe transport has been widely used in the industries of electric power, metallurgy, coal, petroleum, chemical engineering, building materials, mechanism and so on.
The ceramic lined elbow throughout the power, metallurgy, coal, petroleum, chemical, building materials, machinery and other industries, and high-speed development. When lining the wear-resistant ceramic elbow to deliver high grinding material (such as ash, coal, ore powder, etc.), there is a lining of wear-resistant ceramic elbow wear fast, especially the elbow Wear faster. When lining a The ceramic lined elbow to deliver a highly corrosive gas, liquid or solid, there is a problem that the lined wear-resistant ceramic elbow is corroded and is quickly damaged.
There is a problem that it is expensive to use a heat-resistant steel pipe when the material having a higher temperature is conveyed in the lining of the wear-resistant ceramic elbow. After lining the wear-resistant ceramic elbow, these problems are solved.
The ceramic lined elbow is widely used in wear and tear of the mine filling material, ore powder and tailings transport, coal-fired power plant powder, smelting, ash and other lined with wear-resistant ceramic elbow is also very appropriate.
The ceramic lined pipe, Elbows, Reducer, Tees and others manufactured in our factory have been used in over 200 thermal power plants, more than 50 mines and the industries of coal, building materials, mechanism, petroleum and so on.
Abrasion
Ceramic layer Ceramic Lined Reducer Pipe with flange reducer Al2O3 content greater than 89% , micro-hardness HV1000-1500, which has a high abrasion resistance, wear resistance than ten times higher than carbon steel after quenching , superior tungsten carbide drill.
Application range
- coal pulverizing system of power plant pipeline, including, powder transmission pipeline, thick powder separator pipeline, coal drop pipe, combustion system of a wind pipe, a secondary air pipe, three pipeline and burner pipelines, in addition to ash slagging system the discharge pipe, powder pipe, dry ash conveying pipe;
- iron and steel plant raw material conveying pipeline, collecting pipe, dust pipe, ash pipe, ash pipe, mixing pipe, grinding export pipeline, coal pipeline, coal pipeline, separator pipe, burner radius pipe, etc.;
- cement plant selection machine outlet pipe, choose machine inlet pipe, pipe dust pipe, vertical mill outlet pipe, circulating air duct, high temperature air blower, lower material pipe, etc.;
- petroleum, chemical, mining, coal, coal washing plant, smelting, paper, aluminum, building materials, powder engineering, food machinery and other processing and conveying material pipe.
Corrosion
Ceramic materials are neutral , chemically stable , has excellent corrosion resistance and acid resistance , resistant to various inorganic acids, organic acids , organic solvents , and its degree of corrosion of stainless steel is more than ten times.
Temperature
Temperature above 2000celsius degree, long-term work in the range of -50 -900 celsius degree.
Easy welding
Ceramic adjustable tube can be welded , flanged , flexible connectors and other fast way links , very easy to install.
Clean and easy maintenance
Smooth wall, can prevent scaling , fouling, self-cleaning function. Tightness.
Remarks:
- Under the direction of the arrow diagram for the export direction.
- Bend radius is usually 1.5-5 times the diameter of steel pipe (1.5-5D).
- Othe specifications of the compsite pipe can be manufactured accord to the user requirments.
- The weight is caculate by theoretics, maybe have some tolerance, the real weight will be weigh in afer them finished.
Hoop strength is the resistance against radial pressure. The strength of the ceramic -lined steel composite pipe is 300 to 500MPa.
Ceramic lined extension pipe draws
Features and Advantages of ceramic lined pipe
1). High Abrasion Resistant:Ceramic Liner pipe is a high technology production technology-self-fuel high temperature clutch synthesis method.
Vickers hardness of the corundum lining is HV1100 to1500, as high as that of tungsten-cobalt hard alloys, and the abrasion resistance is 20 times as carbon steel pipes. The composite ceramic lined steel elbow was used in a mining plant for about fifty thousands hours. The general service life of common steel elbow is about 700 hours.
2). Corrosion Resistant:
Corundum is a neutral material, and is acid-proof and fouling -free.
3). Heat Resistant:
Ceramic lined composite steel pipe can work under circumstances of -50 to 800 Celsius degree .
4). Lower Weight and Convenient Installation:
The ceramic lined steel pipes are lighter than alloy pipes, cast iron pipes, and cast stone pipes and can be welded or connected through flanges, which reduces the expense of transportation and makes the pipes easier to install.
For the pipes with the same sizes, types and length, the weight of ceramic pipe is about 1/2 of the wearable cast alloy steel pipe's, while the cost has reduced 10%~20% per meter.
The weight of ceramic lined steel pipe is about 1/3 of the cast stone bent pipe's, 1/2 of the cast stone straight pipe's.
Main Properties of Ceramic lined pipe
| Item | Index |
|---|---|
| Content of Alumina | ≥85% |
| Density | ≥3.5 g/cm3 |
| Rockwell Hardness | ≥80 HRA |
| Impact Strength | ≥850 Mpa |
| Bending Strength | ≥290MPa |
| Breaking Temper | ≥4.8MPa m1/2 |
| Coefficient of Linear Thermal Expansion | 20W/m.K |
Ceramic (Corundum: a-Al2O3) lined abrasion resistant straight pipe and fittings are lined with highly abrasion resistant ceramic by SHS -------Self-propagating High-temperature Synthetic process.
- The ceramic-lined steel composite pipe can be joined by welding the steel pipe layer.
- Ceramic lined pipes can take place of expensive stainless steel, titanium, nickel, cast stone or alloy pipes.
- Extended service life can also reduce maintenance cost.
Self-Propagating Ceramic Pipe
Self-propagating ceramic steel pipe create a new generation of abrasion and corrosion resistant engineering pipeline.
The self-propagating ceramic steel pipe has very good wear resistance, Excellent corrosion resistance and Excellent thermal resistance performance.
SHS-self-propagating ceramic steel pipe and elbow create a new generation of abrasion and corrosion resistant engineering pipeline. The composite pipe is composed of three layers: ceramic, intermediate, and steel layers.
The ceramic layer is formed by molten alumina at a temperature above 2500 degree. The molten alumina produced from the reaction Fe2O3+2Al=2Fe+Al2O3 spreads on the inside wall of the steel pipe under the influence of a centrifugal force, then solidifies, so the ceramic layer has high density and smooth surface and bonds to the steel pipe.
Applicable Industries:
- Pipe need excellent wear resistance property: Power plant, Mining, Sea Port, Coal Plant, And pipe for transporting the powder, slurry, sand etc.
- Coal washing plant, pipe for transporting coal and other material.
- Pipe for transporting the melted aluminium.
- Any pipe which need wear protection, corrosion protection etc.
Benefits:
- Excellent wear resistance, Alumina content of the ceramic liner is higher than 95%, Hardness HV1000-1500. The wear protection performance is more than 10 times better than carbon steel after quenching,
- Excellent corrosion resistance, stable chemical properties.
- Excellent thermal resistance performance up to 2000℃,Can be used in the area from -50℃ to 900℃ for long time.
- Can be connected with other pipe by welding, flange and soft fast connecting, easy installation.
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