Ceramic steel shell Silicon carbide (SiC) wear-resistant pipe is a high-performance wear-resistant pipe. It combines the high hardness and wear resistance of silicon carbide ceramic with the high strength and good toughness of a metal steel shell, and is widely used in industrial fields. The following is a detailed introduction:

Structure and Materials

Inner Lining Material: The inner lining of the wear-resistant pipe is made of silicon carbide (SiC) ceramic, which has a Mohs hardness of up to 9.5, 30% higher than Alumina ceramic and surpassing tungsten steel. It has extremely high wear resistance. In the ASTM G65 test, the wear resistance is only 0.05g, which is twice that of alumina ceramic and 25 times that of high-chromium steel.

Outer Layer Material: The outer layer is a steel shell, typically made of high-quality carbon structural steel such as Q235 and Q345, or stainless steel such as 304 and 316L. The steel shell provides excellent strength and toughness to the pipe, enabling it to withstand external pressure and mechanical shock, while also facilitating installation and connection. Composite Structure: Utilizes a sandwich protection system consisting of a silicon carbide ceramic layer, a transition buffer layer, and a high-toughness steel matrix. The transition buffer layer is typically a metal ceramic, which effectively absorbs vibration energy and improves the pipe's resistance to particle erosion by 400%.

Performance

High-Temperature Resistance: Operates stably and long-term within a temperature range of -50°C to 1600°C, withstanding corrosion from molten metal and ultra-high-temperature flue gases.

Corrosion Resistance: Silicon carbide ceramic exhibits excellent chemical stability and is resistant to corrosive media such as strong acids (such as concentrated sulfuric acid and hydrochloric acid) and strong bases (such as NaOH). It can be used within the full pH range of 1-14.

High Thermal Conductivity: With a thermal conductivity of up to 120 W/(m·K), it rapidly dissipates heat and offers 50% greater thermal shock resistance than ordinary ceramics, effectively preventing ceramic layer cracking caused by rapid temperature fluctuations.

Low Operating Resistance: The silicon carbide Ceramic Lining features a smooth surface with minimal roughness, resulting in low fluid resistance, reducing energy loss during material transportation and improving conveying efficiency. Easy Installation: Due to its metal steel outer shell, it can be installed using a variety of methods, including welding and flange connections, making installation easy and reducing installation costs.

Applications

Mining Industry: Suitable for tailings slurry conveying pipelines, effectively resisting long-term erosion from high-hardness particles such as quartz sand, extending pipeline service life.

Steel and Metallurgy: Suitable for blast furnace pulverized coal injection pipes and slag conveying pipes, withstanding temperatures up to 1400°C and corrosion from molten metal slag.

Thermal Power Generation: Suitable for boiler slag discharge pipes and desulfurization slurry circulation pipes, resisting corrosion from Cl⁻ and SO₄²⁻ ions and abrasion from gypsum crystallization.

Chemical Industry: Suitable for concentrated sulfuric acid conveying pipes and high-temperature molten salt pipelines, withstanding strong acids as high as pH 0.5 and high-temperature molten salt environments up to 800°C.