99% alumina ceramic valve sleeve

Alumina Ceramic Valve Sleeve Product Introduction

Alumina ceramic valve sleeves are industrial valve components made from ceramic materials primarily composed of aluminum oxide (Al₂O₃), mainly used in corrosive media transportation systems. Their main components include aluminum oxide (Al₂O₃), zirconium oxide (ZrO₂), and silicon dioxide (SiO₂).

1. Main Features and Advantages:

• Ultra-high hardness and wear resistance: Mohs hardness reaches 9 (second only to diamond), and wear resistance is 5-10 times that of metal valves.

• Excellent corrosion resistance: Can resist strong acids, strong bases, and organic solvents; only a few media such as hydrofluoric acid cause significant corrosion.

• Excellent high-temperature resistance: Can withstand high temperatures of 1200℃ for a long time, with a melting point of up to 2050℃.

• Excellent sealing performance: High surface finish (Ra≤0.2μm), enabling zero-leakage sealing.

• Lightweight design: Density is only 1/3 of that of metal (3.75-3.85 g/cm³).

2. Technical Parameters

Density: 3.75-3.85 g/cm³

Hardness: Rockwell HRA89, Mohs 9

Bending strength: ≥300 MPa

Compressive strength: 2500 MPa

Operating temperature: -40℃ to 350℃

Pressure range: 0.6-2.5 MPa

Elastic modulus: 380 GPa

3. Application Fields

• Chemical industry: Transportation of highly corrosive media such as sulfuric acid, hydrochloric acid, and sodium hydroxide.

• Metallurgy industry: Control of highly abrasive media such as blast furnace gas, ore slurry, and steel slag.

• Power industry: Ash and slag treatment in coal-fired power plants, desulfurization and denitrification systems.

• Environmental protection: Wastewater treatment, fly ash treatment from waste incineration.

• Oil and gas: High-pressure pipelines resistant to H₂S corrosion.

Supports custom specifications.