Silicon Carbide Ceramic lined pipe

Key Characteristics:

• High Wear Resistance: Silicon carbide is one of the hardest materials available, providing exceptional resistance to abrasion and wear.
• Corrosion Resistance: SiC ceramic lined pipes are highly resistant to chemical corrosion from acids, alkalis, and other aggressive chemicals.
• High-Temperature Resistance: SiC ceramics can withstand high temperatures, making them suitable for applications involving intense heat.
• Thermal Conductivity: High thermal conductivity ensures efficient heat transfer, beneficial in thermal processing applications.
• Low Thermal Expansion: The low thermal expansion coefficient of SiC ceramics provides excellent thermal shock resistance.

Size inspection for lined Silicon Carbide

It components involves precise measurement and verification to ensure that the SiC lining meets specified dimensions and tolerances.

sealing platform

Flange I.D.

Flange O.D.

Flange Thickness

Height of sealing

Hole center distance

Length

Manufacturing Process:

The silicon carbide ceramic lining is typically applied to the inner surface of the pipe using a bonding process that ensures a tight, durable fit. The lining can be applied using various methods, including slip casting, reaction bonding, or direct sintering.

Advantages:

• Extended Service Life: The durability of SiC ceramic lined pipes significantly extends their service life compared to traditional metal pipes, reducing the frequency of replacements.
• Reduced Maintenance Costs: The high resistance to wear and corrosion minimizes maintenance needs, leading to lower overall operating costs.
• Improved Efficiency: The smooth surface of SiC ceramics reduces friction, improving the flow efficiency of transported materials.

Silicon Carbide Ceramic lined pipes are essential for industries that deal with highly abrasive and corrosive materials, providing a cost-effective solution for improving the durability and efficiency of their piping systems. These pipes help reduce operational costs and increase the lifespan of the equipment, ensuring consistent performance in harsh conditions.

Applications:

• Mining and Mineral Processing: Used to transport abrasive slurries and materials, reducing downtime and maintenance costs due to wear and tear.
• Power Generation: Employed in ash and coal handling systems, as well as in the transport of abrasive and corrosive fluids.
• Chemical Processing: Ideal for transporting corrosive chemicals and hot gases, maintaining integrity in harsh chemical environments.
• Oil and Gas Industry: Used in pipelines for transporting crude oil, natural gas, and other hydrocarbons that can be highly abrasive and corrosive.
• Thermal Power Plants: Applied in flue gas desulfurization (FGD) systems, where high wear and corrosion resistance are required.

Properties

Silicon carbide (SiC) ceramics have a set of unique physical-chemical properties, such as high hardness and mechanical stability at high temperatures, excellent thermal conductivity and low coefficient of thermal expansion, high resistance to corrosion and oxidation, wide bandgap, and others.

• High hardness (second only to diamond)
• Low density 40% the density of steel – approximately the same as aluminium
• Low porosity
• Good wear resistance in sliding and abrasive environments
• Excellent corrosion resistance in most chemical environments
• Low thermal expansion and high thermal conductivity leading to excellent thermal shock resistance.

Properties of reaction bonded silicon carbide

Reaction Bonded SiC has the lowest cost production technique with a course grain. Reaction Bonded SiC provides somewhat lower hardness and use temperature, but higher thermal conductivity. Reaction bonded silicon carbide has high strength, high hardness, hig abrasion resistance, high temperature resistance, corrosion resistance, good oxidation resistance, good thermal shock resistance, good thermal conductivity, rapid cooling and rapid heat resistance and high temperature creep resistance, etc. It can be made into beam, roller, cooling air pipe, thermocouple protection pipe, temperature measuring pipe, burner nozzle, wear-resisting parts, corrosion-resisting parts, sealing parts and a variety special-shaped structural parts.

Properties of pressureless sintered silicon carbide

Compared with reaction bonded silicon carbide, pressureless sintered silicon carbide has higher purity, better mechanical properties, more prominent corrosion resistance ( Resistantto strong acid and alkali corrosion, It is also the only ceramic material which can resistant to hydrofluoric acid corrosion ), higher wear resistance, because of there’s no free silicon in the material can be used in other materials can not meet the environment, longer service life.

Advantages

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.

1. High strength: as the outer wall of the composite steel pipe is made of common ordinary steel pipe, the strength requirements of various processes are fully satisfied, under the support of the outer wall steel pipe.
2. High wear resistance: Most of the inner wall of the steel pipe is a high wear-resistant ceramic which are selected according to the process requirements. The ceramic content is more than 95%. Thus, the product has good wear resistance.
3. High anti corrosion: As the composite layer is made of corrosion-resistant materials, it seems to solve the main problems. It can be widely used in sites containing acid, alkali and salt.
4. High bond strength: The matrix of the composite is made of organic polymer. On the basis of inorganic ceramic as a reinforcing agent, it is articulated under the environment of specific temperature, pressure and proper vacuum. At the same time, together with the inner wall of the steel pipe, the peeling strength is up to 14-16 MP which is is more than 100 times of the ordinary lining pipe. However, the difference of thermal expansion coefficient of composite layer leads to the phenomenon of inner liner falling off.
5. Weather ability: This product can be used for 40 to 200 degrees for a long period of time. It can be as high as 260 degrees. This product is widely used in environmental protection, electric power, chemical industry, metallurgy, mining and other industries. It is an ideal substitute for lining plastic pipes.

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.

SiC 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 RBSiC ceramic. Moh’s hardness of up to 13. Wear resistance than carbon steel pipe more than 30 times higher.

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 10 times.

Working condition of silicon carbide ceramic wear-resistant pipe

Metallurgy and power industry: The reason why these two industries are put together is mainly because the two industries have a large number of metal pipes for the transmission of coal powder, ash, mud, and the like. After using the wear-resistant elbow pipe, the advantages of strong wear resistance, long life and easy installation are immediately highlighted.

Mining industry: If the wear-resistant elbow pipe is not used, the ordinary pipe is used for the transportation of the ore powder. Due to the filling of the mine and the transportation of the concentrate powder, the wear of the pipe is relatively large, so that the life of these pipes is only about one year. After wearing elbow pipes, the life of such pipes will be extended by a factor of five.

Coal industry: If long-distance wet transport of coal is required, the pipe has the requirements of good wear resistance and high corrosion resistance, and the pipe with wear-resistant elbow can meet these requirements well.