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Ceramic lined pipe

Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.

Customize ceramic lined fittings

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. 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. A small amount of iron also remains in the ceramic layer. There is a thin equiaxed grain area of alumina near the steel pipe wall, and then alumina was grown in form of dentrite to the surface of ceramic layer.

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.

A well-known example of SHS reaction is the thermite reaction given below:

化学反应式

This reaction generates temperatures above the melting point of alumina and is used in the thermit welding process for joining railway lines.

Several other terminologies – such as combustion synthesis, gasless combustion or self-propagating exothermic reaction – are used to describe the process.

The types of material that can be formed using this process include metal borides, silicides, carbides, nitrides, sulphides, aluminides and oxides.

Self-propagating High-temperature Synthetic process

Main Properties 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

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.

1. Ceramic Lined Steel Pipe and Elbows:

1.1 The Manufacturing Process of Ceramic Lined Steel Pipe and Elbows:
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 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. They are widely used to convey highly abrasive material such as fly ash and any other fine powder material in mine, thermo power generating, coal processing plant, metallurgy, construction, etc. The service life is 10 to 20 times longer than normal steel pipe.

Features and Advantages:

a). High Abrasion Resistant:
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. A composite elbow was used in a mining plant for about fifty thousands hours.

The general service life of common steel elbow is about 700 hours.

b). Corrosion Resistant:
Corundum is a neutral material, and is acid-proof and fouling -free.

c). Heat Resistant:
Ceramic-lined composite steel pipe can work under circumstances of -50 to 800 degrees Celsius.

d). Lower Weight and Convenient Installation:
The ceramic-lined steel composite 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.

e). Lower Cost:
Ceramic-lined composite steel pipe can take place of expensive stainless steel, titanium, nickel, cast stone or alloy pipes. Extended service life can also reduce maintenance cost.

Features of Alumina Ceramic:

Alumina is a cost effective and widely used material in the family of engineered ceramics. Alumina ceramics have been developed and optimized for maximum wear resistance and corrosion resistance. A high density, diamond like hardness, fine grain structure and superior mechanical strength are the unique properties that make it the material of choice for a wide range of demanding applications. Ceramic has uses similar to Cast Basalt but it has greater resistance to wear in high velocity applications and impact resistance in extreme dynamic Systems

Characteristics of SHS self-burning ceramic composite pipe

Self-propagating high temperature synthesis technology of corundum ceramic composite steel pipe is that is, “SHS” technology composite, is a national High-tech “863” project, is the original national metallurgical Industry Department, the Ministry of Electricity Project focused on the promotion of new products, the tube from within to outside by ceramic (corundum) layer, transition layer and steel layer composed of three parts.

Good wear resistance

Ceramic composite pipe due to corundum ceramic (a-AL2O3), Mohs hardness of 9.0 is equivalent to more than HRC90. Therefore, it has high wear resistance for abrasive media conveyed by industries such as metallurgy, electric power, mining, and coal. It has been confirmed by industrial operation that its wear life is ten times or even several ten times that of hardened steel.

Small operating resistance

SHS ceramic composite pipe is not like a convex spiral line on the inner surface of a seamless steel pipe because the inner surface is smooth and never corrodes. The inner surface roughness and clear water resistance characteristics of the relevant test units were tested. The smoothness of the inner surface was better than that of any metal pipe. The clear drag coefficient was 0.0193, which was slightly lower than the seamless pipe. Therefore, the tube has the characteristics of small running resistance and can reduce operating costs.

Corrosion, anti-scaling

Since the steel ceramic layer is (a-AL2O3), it is a neutral characteristic. Therefore, it is resistant to acid and alkali and seawater corrosion, and it also has anti-scaling properties.

Temperature resistance and heat resistance

Due to the corundum ceramic (a-AL2O3), it is a single stable crystalline structure. Therefore, the composite pipe can operate normally in the long-term temperature range of -50–700°C. Material linear expansion coefficient of 6-8 × 10-6/0C, about 1/2 of the steel pipe. The material has good thermal stability.

The cost of the project is low

Ceramic composite pipes are light weight and affordable. It is 50% lighter than the cast stone tube with the same inner diameter; it is 20-30% lighter than the wear-resistant alloy tube, and it has good wear resistance and corrosion resistance because of its long service life, thus supporting hanger costs, transportation costs, installation fees, and Reduce operating costs. Comparing the project budget of the design institute and construction unit with the actual project, the project cost is equivalent to the cast stone. Compared with the wear-resistant alloy pipe, the project cost is reduced by about 20%.

Easy installation and construction

Because of its light weight and good welding performance. Therefore, welding, flanges, quick coupling, etc. can be adopted, and the construction and installation are convenient, and the installation cost can be reduced.

Other Knowledge

Ceramic steel pipe and traditional steel pipe, wear-resistant alloy cast steel pipe, cast stone pipe, as well as steel plastic, steel rubber pipe, etc. have essential differences. The outer layer of ceramic steel pipe is steel, and the inner is corundum. The Vickers hardness of corundum layer is as high as 100-1500 (Rockwell hardness is 90-98), which is equivalent to tungsten cobalt hard gold. The wear resistance is more than 20 times times higher than carbon steel pipe, it is superior to the corundum grinding wheel which is usually bonded. Now the corundum grinding wheel is still the main grinding wheel of the grinding mill. The corundum layer in the ceramic steel tube can wear away the corundum grinding wheel. The abrasion resistance of ceramic steel tube is mainly by the inner layer of several millimeters thick corundum layer, its Morse hardness is 9, second only to diamond and SIC, in all oxides, its hardness is the highest.

The inner liner ceramic wear-resisting steel pipe is made by SHS high temperature synthesis-centrifugal method, the melting point of corundum in ceramic steel pipe is 2045 ℃, the corundum layer and steel layer have special structure and stress field because of the process reason. Under normal temperature, the compressive stress of the ceramic layer, the tensile stress of the steel layer, the two opposites, into a balanced whole. Only when the temperature rises to more than 400 ℃, because the thermal expansion coefficient is different, the new stress field produced by the thermal expansion and the original stress field in the ceramic steel pipe cancel each other, so that both the ceramic layer and the steel layer are in a free equilibrium state. When the temperature rises to 900 ℃ the inner liner ceramic wear-resistant steel pipe into the water, repeatedly soaked repeatedly, the composite layer does not crack or cracking, showing the incomparable thermal shock resistance of ordinary ceramics. This performance is of great use in construction, because the outer layer is steel, in addition to heating the inner layer does not crack, in the construction, the flange, blowing, explosion-proof doors can be welded, but also can be directly welded to connect, which is more than wear-resistant cast stone pipe, wear-resistant cast steel pipe, Rare-earth wear-resistant steel pipe, bimetal composite pipe, steel pipe, Steel rubber pipe In the construction is not easy to weld or welding more than a chip. Internal liner ceramic Wear-resistant steel pipe resistance to mechanical impact is good, in transport, installation beat and the two support between the weight bending deformation, the composite layer does not break off.

At present, the practice of dozens of thermal power plants shows that the wear resistance of the inner-lined ceramic steel tube is high, and the resistance to fluid scouring is strong. In the first air duct, the bending pipe wear the most quickly, the wear resistance of the inner liner ceramic wear-resisting steel pipe is more than 5 times times higher than that of the thick wall wear-resisting cast steel elbow.

In practice, the inner liner ceramic wear-resistant steel pipe after 1-2 years to open observation and measurement, the composite layer has no obvious wear or fall off, in the same size and unit length of the pipeline, the internal liner ceramic wear-resistant steel tube weight only wear-resistant cast steel pipe or bimetal composite pipe of about 1/2, the cost of each of the meters reduced 30–40%, Only cast stone pipe and Rare-earth wear-resistant steel pipe weight of about 2/5, per meter project cost reduction of more than 20%. In the corrosive or high-temperature place to use the liner ceramic wear-resistant steel pipe, its price is only a stainless steel tube, nickel-titanium tube of a fraction of.

Fluid pipeline transportation is not only used in the power industry, but also in metallurgy, coal, petroleum, chemical, building materials, machinery and other industries. When the pipe is transported with large grinding material (such as ash residue, pulverized coal, mineral fine powder, tailings cement, etc., there is a problem of fast abrasion of pipe, especially the bending pipe wear fast; when conveying a strong corrosive gas, liquid or solid in the pipeline, there is a problem that the pipeline is corroded and destroyed quickly. When conveying the material with high temperature in the pipeline, there are some problems such as the price of heat-resisting steel pipe is very expensive. The internal liner ceramic wear-resistant steel pipe market, these problems are solved.

Ceramic Lined Pipe usage

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.

And it has developed rapidly. When transporting the materials with the harder abrasion (such as ash dregs, slag, coal powder, mining dregs, the rest mines, cement, etc), it will exit the problem that the abrasion of pipes is too rapid. Especially, the abrasion of bent pipes is greatly more rapid.

When transporting the special abrasion materials or erosive materials, it will exit the problem that the damage of pipes is too rapid.

Ceramic lined pipe and the traditional steel pipe, wear-resistant alloy cast steel pipe, cast stone pipe and steel, steel and other rubber pipe is essentially different. Ceramic lined pipe is the outer layer of steel, the inner layer is corundum. Coral layer Vickers hardness of up to 1100-1500 (Rockwell hardness of 90-98), the equivalent of tungsten cobalt hard gold. Wear resistance than carbon steel pipe more than 20 times higher.

Abrasion resistant straight pipe

Abrasion resistant elbow


Installion of the ceramic lined elbow

When transporting the materials with the harder abrasion (such as ash dregs, slag, coal powder, mining dregs, the rest mines, cement, etc), it will exit the problem that the abrasion of pipes is too rapid. Especially, the abrasion of bent pipes is greatly more rapid.

Use the ceramic lined elbows instead the backpack steel pipes

Ceramic lined pipe and the traditional steel pipe, wear-resistant alloy cast steel pipe, cast stone pipe and steel, steel and other rubber pipe is essentially different. Ceramic lined pipe is the outer layer of steel, the inner layer is corundum. Coral layer Vickers hardness of up to 1100-1500 (Rockwell hardness of 90-98), the equivalent of tungsten cobalt hard gold. Wear resistance than carbon steel pipe more than 20 times higher.

Ceramic Lined Cyclone Overflow Pipe

At present, the use of our company’s high wear-resistant ceramic lined steel pipe dozens of thermal power plant practice shows that: ceramic lined steel pipe anti-wear ability, anti-fluid erosion ability.

In a duct, the elbow wear the fastest, in practice, Ceramic lined pipe used after 1 to 2 years to open the observation and measurement, the composite layer are no obvious wear or tear off, ceramic-coated steel pipe wear Than the thick-walled wear-resistant cast steel pipe increased by nearly 5 times.

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.

For example, in the condition of hard abrasion, the ceramic steel unbent pipes have been used for several years. But, at present, there is no any ceramic steel unbent pipe has been worn through. Even the ceramic steel unbent pipes with hardest abrasion, their use life is 10 times longer than the cast stone bent pipes and wearable alloy steel bent pipes, 15 times longer than the toughened plastic bent pipes and toughened latex bent pipes.

The ceramic lined pipe has captured the market rapidly. Besides the high quality and the wonderful capability, it’s also because its capability price ratio is higher than other wearable, anti-abrasion & anti-hotness pipes.

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 pipe is about 1/3 of the cast stone bent pipe’s, 1/2 of the cast stone unbent pipe’s.

Coal preparation plant site

The cost per meter is equal to the unbent pipe’s, 5%~15% less than the bent pipe’s.

Serious wear and tear of the pipeline not only caused a lot of material waste and media running, running, dripping, leakage, and frequent pipeline maintenance replacement, increasing the labor intensity of workers, increased production costs.

Variety classification and code name of wear-resisting pipe in power industry
The abrasion pipe of thermal power plant is mainly conveying raw coal powder, ash slag, flue gas desulfurization (FGD) limestone powder and slurry, due to the transmission of medium velocity fast, poor operating conditions, resulting in pipelines, especially elbow, variable diameter pipe serious wear and corrosion, not only consumes a lot of metal materials, but also to the thermal power plant security, economic operation has brought hidden dangers. The abrasion mechanism of pipeline is mainly based on erosion wear. Wear-resistant pipe can be divided into two categories: single metal pipe and composite pipe.

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.

Advantages & limitations for using ceramic lining in pipes

The ceramic lining in pipes used for transporting fluidized coal, from the crushing plant to the boiler, needs to be lined with ceramic.

Ceramic lined pipes are more resistant to abrasion than most other materials such as steel, stainless steel, rubber lined, etc.

There’s some of each, but over the long haul, they balance out.

Here’s some general thoughts:

  1. All pipe is to be made of a long hole surrounded by metal or plastic centred around the hole.
  2. All pipe is to be hollow throughout the entire length – do not use holes of different length to the pipe.
  3. The ID (Inside Diameter) of all pipe must not exceed the OD (Outside Diameter) – otherwise the hole will be on the outside.
  4. All pipe is to be supplied with nothing in the hole, so that water, steam or other stuff can be put inside at a later date.
  5. All pipe should be supplied without rust; this can be more readily applied at the job site. NOTE: Some vendors are now able to supply pre-rusted pipes. If available in your area, this product is recommended, as it will save a great deal of time at the job site.
  6. All pipe over 500ft (150m) in length should have the words “LONG PIPE” clearly painted on each side and end, so that the contractor knows it’s a long pipe.
  7. Pipe over 2 miles (3.2km) in length must also have the words “LONG PIPE” painted in the middle, so the contractor will not have to walk the entire length of the pipe to determine whether or not it is a long pipe or a short pipe.
  8. All pipe over 6ft (1.83m) in diameter must have the words “LARGE PIPE” painted on it, so the contractor will not mistake it for small pipe.
  9. Flanges must be used on all pipe. Flanges must have holes for bolts, quite separate from the big hole in the middle.
  10. When ordering 90 or 30 degree elbows, be sure to specify left-hand or righ-hand, otherwise you will end up going the wrong way.
  11. Be sure to specify to your vendor whether you want level, uphill or downhill pipe. If you use downhill pipes for going uphill, the water will flow the wrong way.
  12. All couplings should have either right-hand or left-hand threads, but do not mix the threads otherwise, as the coupling is being screwed on one pipe, it is being unscrewed fron the other.
  13. All pipes shorter than 1/8in (3mm) are very uneconomical in use, requiring many joints. They are genreally known as washers.
  14. Joints in pipes for piping water must be water-tight. Those in pipes for compressed air, however, need only be air-tight.
  15. Lengths of pipes may be welded or soldered together. This method is not recommended for concrete or earthenware pipes.
  16. Other commodities are often confused with pipes. These include: conduit, tube, tunnel and drain. Use only genuine pipes.

Use only genuine pipes.

Ceramic linings out last standard piping 4 to 1, In straight runs even better. I would suggest contacting one of the transport equipment suppliers in your area and discuss with them your options.

Properties

Wear-resistant ceramic composite pipe, full name ceramic liner composite steel pipe, is a kind of ceramic composite steel pipe.

A small amount of iron also remains in the ceramic layer. There is a thin equiaxed grain area of alumina near the steel pipe wall, and then alumina was grown in form of dentrite to the surface of ceramic layer.

Physical Properties
Ceramic lined pipe

When abrasive material is transported through steel pipe in mining applications, typically as pumped slurry, the pipe can quickly be eroded from the inside out, which in more extreme cases can result in pipe leaks and even failure, or significant maintenance costs and downtime for pipe replacement.

Section of the composite pipe
Microstructure of ceramic layer
Mechanical Propertie:

FeAl2O4 distributes among alumina dentrite. Although the ceramic layer was solidified from one end to another end of a pipe, the microstructure of ceramic layer was almost uniform throughout the whole length of the pipe.

Resistance to thermal shock
A composite elbow was used
in a mining plant for about
fifty thousands hours.

Hoop Strength

Hoop strength is the resistance against radial pressure. The strength of the ceramic -lined steel composite pipe is 300 to 500MPa.

Compression-Shear Strength

Compression-shear strength is the bonding strength at the interface between the ceramic layer and the steel pipe. The compression-shear strength of the ceramic-lined composite pipe is 15 to 20MPa.

Resistance to Mechanical Shock

The ceramic layer does not crack or flake off when the composite pipe receives a mechanical shock.

Resistance to Thermal Shock

The ceramic layer does not crack or flake off when heated to 800℃ and then quenched.

Resistance to Abrasion:

The ceramic-lined steel composite pipe has exceptional resistance to abrasion. Its service life in materials transportation with hard abrasives is more than 20 times longer than in common steel pipe.

For these abrasive applications, mild steel pipe is not tough enough to stand up to the abuse for more than a year or two. As a result, maintenance engineers are seeking superior piping alternatives to reduce maintenance and prolong system life, at a price point that will not significantly impact the budget.

The general servicelife of common steel elbow is about 700 hours.

Good Weld Ability

The ceramic-lined steel composite pipe can be joined by welding the steel pipe layer.

Light Weight

The ceramic-lined steel composite pipes are lighter than alloy pipes, cast iron pipes, and cast stone pipes, which reduces the expense of transportation and makes the pipes easier to install.

Good weld ability
The relative weight of the
composite pipe is about
40-50% lighter than that of the
caststone pipe
Convenient Installation

The ceramic-lined steel composite pipes can be easily connected by welding, or with flanges and soft easy connectors.

The composite pipes have good corrosion-resistant. There is no evidence of corrosion filling the composite pipes with bitter for one year (left), but the common steel pipe under the same condition is corroded seriously (right).

Ceramic liner composite pipe is different from traditional seamless steel pipe, wear-resisting alloy cast steel pipe, cast stone pipe, steel plastic pipe and steel rubber pipe.


Advantages of Ceramic lined pipe

Ceramic Liner pipe is a high technology production technology-self-fuel high temperature clutch synthesis method.

Ceramic Liner Composite pipe is a high technology production technology-self-fuel high temperature clutch synthesis method. The tube is composed of corundum ceramics, transition layer and steel three layers respectively from inside to outside, the ceramic layer is formed dense corundum porcelain (Al2O3) at high temperature above 2,200 ℃, and the steel pipe is formed firmly by the transition layer.

The advantages of Ceramic lined pipe:

1. Good abrasion resistance

Ceramic lined pipe due to the inner lining of corundum ceramic (A-al2o3), the Mo hardness of up to 9.0 of the equivalent HRC90. Therefore, the metallurgical, electric power, mining, coal and other industries to transport the grinding medium has high wear resistance. The industrial operation confirms that its wear-resisting life is 10 times times or even dozens of times times that of quenched steel.

2. Small Operation resistance

corundum ceramic wear-resistant tube in the inner surface of smooth, and never rust, nor like seamless steel tube inside the surface has convex spiral. After testing the internal surface roughness and water resistance characteristics of the testing units, the smoothness of the inner surface is superior to any metal pipe, the resistance coefficient is 0.0193, slightly lower than the seamless pipe.

3, corrosion resistance, anti-scaling

Because the steel ceramic layer is (A-al2o3), it is a neutral trait. Therefore, with acid and alkali resistance and seawater corrosion, and at the same time with anti-scaling and other characteristics.

4. High temperature resistance and heat-resisting performance

The corundum ceramic (A-al2o3) is a single stable crystalline structure. Therefore, the composite pipe can operate in the -50–700℃ temperature range for a long time. Material linear expansion coefficient 6-8×10-6/0c, about 1/2 of steel pipe.

5. Low construction cost

corundum ceramic wear-resistant tube light weight, the price is suitable. The casting pipe with the same inner diameter is lighter than 50% and lighter than that of the wear-resistant alloy tube 20–30%.

6. Convenient installation and construction

Because of the light weight of the tube, and good welding performance. Therefore, welding, flange, rapid connection and so on, construction and installation is convenient.

7. Ceramic lined pipe with the traditional steel pipe, wear-resistant alloy cast steel pipe, cast stone pipe as well as steel plastic, steel rubber pipe, etc. have essential differences. The outer layer of ceramic steel pipe is steel, and the inner is corundum. The Vickers hardness of corundum layer is as high as 100-1500 (Rockwell hardness is 90-98), which is equivalent to tungsten cobalt hard gold. The wear resistance is more than 20 times times higher than carbon steel pipe, it is superior to the corundum grinding wheel which is usually bonded.

Now the corundum grinding wheel is still the main grinding wheel of the grinding mill. The corundum layer in the ceramic steel tube can wear away the corundum grinding wheel. The abrasion resistance of ceramic steel tube is mainly by the inner layer of several millimeters thick corundum layer, its Morse hardness is 9, second only to diamond and SIC, in all oxides, its hardness is the highest.


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:

  1. Pipe need excellent wear resistance property: Power plant, Mining, Sea Port, Coal Plant, And pipe for transporting the powder, slurry, sand etc.
  2. Coal washing plant, pipe for transporting coal and other material.
  3. Pipe for transporting the melted aluminium.
  4. Any pipe which need wear protection, corrosion protection etc.

Benefits:

  1. 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,
  2. Excellent corrosion resistance, stable chemical properties.
  3. Excellent thermal resistance performance up to 2000℃,Can be used in the area from -50℃ to 900℃ for long time.
  4. Can be connected with other pipe by welding, flange and soft fast connecting, easy installation.

Ceramic lined pipe struct section

Abrasive wear costs the material handling industry billions of dollars each year in downtime and replacements. The supply and application of abrasion resistant materials is a multimillion dollar a year industry. This covers products from epoxies to the hardest most abrasion resistant materials known to man. Choosing the right wear material for your particular application should not be left to the special interest of a one dimensional company or its salesmen.

Evaluating and comparing historical information as it relates to your application is what we do best.

Knowledge + Quality + Longevity = Success

Self-propagating high-temperature synthesis (SHS) is a method for producing inorganic compounds by exothermic reactions, usually involving salts.

Fundamentals

The ceramic layer is formed by molten alumina at a temperature above 2500 degree Celsius. 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.

These ceramic lined system can provide excellent structural support and wear resistance,they are widely used in the heavy industries’ most difficult wear situation.

Size76mm-1020mm
Wall Thickness9mm-27mm
Outside Housing MaterialCarbon Steel Seamless Pipe 
Inner MaterialAlumina Ceramic
Ceramic Lining Thickness
(Including Transition Layer)
3mm to 6mm
Normal Operation Temperature-50 deg. C —- 800 deg. C
Normal Operation Velocity20-35m/s
Length 1.     1M, 2M, 3 M
2.   Customized Maximum Length Can be Achieved by Welding.
Features & Benefits
  • The lining of the product is manufactured from aluminaceramics for engineering.Alumina ceramic material have a high hardness ,and have a strong wear resistance.
  • As the amphoteric compound ,the engineering ceramics will not chemically react with acid and alkali.
  • Since the density of the ceramic is just half that of the steel,the weight of the custom ceramicpipes and fittings is light,which contributes to easy installation.
  • 10 to 1 life performance ,reducing the maintenance cost, down time and clean up.

Classification, structure and industry application of wear resisting elbow

Designed to match standard pipe flanges for easy installation in high-wear areas of the pipeline only.

Maximum long-term cost-savings in replacement parts and downtime.

Now, in power plants, steel mills, petroleum and petrochemical, coal, cement building materials, mines and other industrial and mining enterprises, in the wear of serious material systems, the widespread use of wear-resistant pipes, but because of the characteristics of wear-resistant piping, enterprise procurement and technical personnel in the procurement of wear-resistant pipes and wear This is mainly from the user’s understanding of the wear-resistant pipeline is not comprehensive, wear-resistant elbow and wear-resistant pipe selection To do a comprehensive analysis.

Classification of wear-resisting elbow:

  • Mainstream wear-resistant forms: Ceramic, bimetal, chromium carbide surfacing
  • Traditional wear style: rare earth wear-resisting cast steel, wear-resistant cast stone
  • Non-mainstream wear-resistant forms: sic, tortoise shell mesh wear-resistant mortar (high-temperature wear-resistant), polymer polyethylene, polyurethane, cement

Structure of wear-resisting elbow:

  • Push the wear-resisting elbow
  • Welding wear-resistant bending
  • Compound wear-resisting elbow
  • Backpack wear-resistant elbow

Wear-resistant elbow industry applications:

  1. power plant: pulverized coal, ash removal, dust removal, desulfurization
  2. steel mills: flue gas dust, flushing slag
  3. Petroleum and petrochemical: FCC pipeline, biogas gas pipeline
  4. Cement plant: pulverized coal pipe, kiln head kiln end
  5. coal washery: all plant inside and outside the pipeline, tee Qualcomm, shunt box
  6. Alumina: over material pipe elbow

Specifications & size range of ceramic lined pipe

It reduces considerabley degradation of conveyed material and avoids formation of angel hair through its patented deflection chamber.

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