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The ceramic-lined steel composite pipe

Date:2018-07-17    View:2620      Tag:The ceramic-lined steel composite pipe

Ceramic lined steel composite pipes have excellent wear resistance. The service life of materials used in hard abrasives is 20 times longer than that of ordinary steel pipes.


The combination of high rigidity and high elastic steel makes the pipes unrivalled and can be used as wear-resistant, heat-resistant and corrosion resistant materials in the fields of power generation, metallurgy, mining and chemical industry.

      

Ceramic-lined carbon steel pipe                                      Low carbon steel pipe with ceramic                                      The ceramic lined steel composite pipe



Ceramic Lined Steel Pipe and Elbows
      

Ceramic Lined Elbow                                                    Ceramic Lined reducer pipe                                                           Ceramic Lined Bends




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.

Ceramic lined extension pipe draws
Principle of a wear-protected pipe 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.

Size range:

  • 22.5 degree elbow
  • 45 degree elbow
  • 90 degree elbow
  • Backpack wear-resistant ceramic lined elbow
  • Straight Pipe (CLSP)
  • Ceramic-Lined Composite Tee
  • Ceramic lined composite Y-type Tee

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. 

1.2. Features and Advantages: 
A). High wear resistance:
The Vivtorinox hardness of corundum lining is HV1100 to 1500, which is as high as tungsten cobalt cemented carbide and its wear resistance is 20 times of that of carbon steel pipe. The composite elbow has been used for about fifty thousand hours in the mining plant.
The general service life of ordinary steel elbow is about 700 hours.
B). Corrosion resistance:
Corundum is a neutral material that is acid and dirt free.
C). Heat resistance:
Ceramic lined composite steel pipes can work in the environment of -50 to 800 degrees Celsius.
D). Light weight, easy to install:
Ceramic lined steel composite pipes are lighter than alloy tubes, cast iron pipes and cast stone pipes, which can be welded or connected through flanges, reducing transportation costs and making pipes easier to install.
For pipes of the same size, type and length, the weight of ceramic tube is about 1/2 of wearable cast alloy steel pipe, and the cost is reduced by 10%~20% per meter. The weight of ceramic lined steel pipe is about 1/3 of cast stone elbow and 1/2 of straight pipe of cast stone.
E). Lower cost:
Ceramic lined composite steel pipes can replace expensive stainless steel, titanium, nickel, cast stone or alloy pipes. Prolonging the service life can also reduce the maintenance cost.

Usage of The ceramic-lined steel composite 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 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).
Wear-resisting comparative table of The ceramic-lined steel composite pipe:
Sand injection test 30% Transfer test of sludge with SiO2
Material Volume diminution
(cm3)
Material Volume diminution
(cm3)
Ceamic lined
Steel pipe
0.0022 Ceamic lined
Steel pipe
3
Ceramic pipe
Al2O397%
0.0025 S45C 25
Features and Advantages of ceramic-lined steel composite pipe:

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

1). 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. 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.

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