Steel-lined Alumina ceramic linings are high-performance composite materials composed of steel plate and alumina ceramic. They are widely used in industrial applications subject to harsh conditions such as wear and corrosion. The following is a detailed introduction:

Material Composition

Steel plate: As the base material, it provides strength and toughness, capable of withstanding significant impact and vibration. Commonly used materials include ordinary carbon steel and stainless steel.

Alumina ceramic: As the wear-resistant layer, it is generally made from high-purity alumina powder, sintered at high temperatures. It possesses extremely high hardness and wear resistance, effectively resisting wear and erosion.

Performance

High Wear Resistance: Alumina ceramic boasts high hardness, reaching Rockwell hardness levels of HRA88 and above, offering excellent wear resistance. It effectively resists erosion and wear from materials, extending equipment life.

Strong Impact Resistance: Combining the toughness of steel plate with the hardness of ceramic, some products feature a rubber buffer layer between the ceramic and steel plate to resist impact from large objects and prevent the ceramic layer from cracking.

Excellent Corrosion Resistance: The ceramic's primary component, α-alumina, is chemically stable and resistant to corrosive substances such as acids and alkalis, making it suitable for corrosive environments such as chemical processing. Easy Installation: Modular production allows for bolt-on or welded installation, simplifying disassembly and replacement, reducing maintenance time and costs.

Production Process

Alumina powder is first crushed, screened, mixed, formed, dried, and sintered to form ceramic sheets. High-quality steel plates are then used as the substrate, and the ceramic sheets are welded to the steel plate using methods such as lap welding and lock welding. After welding, they undergo heat treatment to relieve stress. Finally, the steel-lined ceramic sheets undergo leveling and polishing to ensure a smooth surface and a tight bond between the ceramic sheet and the steel plate.

Applications

Mining Industry: Suitable for linings and wear-resistant components of equipment such as crushers, ball mills, and conveyors, protecting against wear and impact from ore.

Metallurgical Industry: Suitable for linings of equipment such as blast furnaces, converters, and continuous casting machines, withstanding high temperatures, high pressures, and highly corrosive environments.

Power Industry: Commonly used in coal-fired power generation units, ash handling systems, and dust collectors, protecting against wear and corrosion from ash and smoke. Chemical industry: It can be used as the inner lining of reactors, agitators, conveying pipelines and other equipment to resist corrosion and wear from chemical substances.

Key attributes