Alumina ceramic rolling mill rolls

Alumina Ceramic Rollers Product Introduction

Alumina ceramic rollers are high-performance industrial ceramic products made from alumina (Al₂O₃), with the main component being alumina, and the effective content usually exceeding 92%. Some products adopt a composite structure design, with an outer layer made of special ceramic materials (such as alumina, zirconia, etc.) and an inner metal sleeve, combined using adhesives or hot pressing.

Technical Parameters:

Density: 3.6 g/cm³.

Compressive Strength: >1050 N.

Pressure Resistance: 120 MPa.

Thermal Conductivity: 0.032.

Mohs Hardness: 9.

Long-term Operating Temperature: Up to 1600℃.

Application Areas

• Metallurgical industry: Utilizing its high temperature resistance (melting point 2050℃) and corrosion resistance, it is used in sliding nozzles for steel casting and in the smelting of rare and precious metals.

• Chemical systems: Used as reactor vessels, pipes, and chemical pump components due to its high hardness and wear resistance.

• Electronics industry: Used in thermocouple sheaths, protective tubes, and solid-state integrated circuit substrates, thanks to its excellent high-temperature insulation properties.

• Food and pharmaceutical industries: Used in food processing and pharmaceutical production, where high cleanliness is required.

• Other fields: Including glass manufacturing, mechanical processing, and wear-resistant components.

Performance Characteristics

• Excellent wear resistance: With a Mohs hardness of 9, it exhibits excellent wear resistance, making it suitable for high-wear environments.

• Superior heat resistance: Low thermal expansion coefficient (8-9×10⁻⁶/℃) and good thermal stability.

• Strong corrosion resistance: Highly resistant to acids, alkalis, salts, and other chemical substances.

• Good insulation properties: Excellent insulation performance in high-frequency environments with low loss.

• Long service life: Compared to metal components, the replacement cycle can be extended by several times.

Supports custom specifications.