I. Core Performance Parameters

1. Material and Composition

Alumina content ≥ 92%-99.9% (high-purity), density ≥ 3.5-3.6 g/cm

Rockwell hardness HRA 85-88, wear resistance 260-271.5 times that of manganese steel and 171.5 times that of high-chromium cast iron

2. Mechanical Properties

Compressive strength ≥ 850 MPa, flexural strength ≥ 290 MPa, fracture toughness KIC ≥ 4.8 MPa·m/s

Coefficient of thermal expansion 7.2×10⁻³m/m·K, thermal conductivity 20 W/m·K

3. Temperature Range

Ordinary type: Long-term use ≤ 250°C (limited by rubber buffer layer)

High-purity type: Temperature resistance ≤ 1600°C (sintering temperature 1650-1990°C)

II. Structural Design and Process

1. Steel-backed ceramic composite liner

Three-layer structure: Alumina ceramic sheet (wear-resistant (layer) + rubber buffer layer (Shore hardness 60±5) + steel plate base (3-10mm)

Fixing Method: Dual bolt welding and adhesive bonding, ceramic plate through-bolt welding to prevent falling off

2. Process Features

Unibody vulcanization molding, ceramic rubber and steel plate integrated, impact resistance improved by 60%

Supports custom shapes (such as curved plates and dovetail groove plates), smooth surface reduces material resistance

III. Typical Application Scenarios

1. High-Impact Conditions

Steel plant weighing hoppers and mining chutes: The rubber buffer layer absorbs the impact of large particles, reduces noise and prevents blockage.

Coal conveying systems for thermal power plants: The ceramic rubber composite lining resists coal block impact, extending service life by over 10 times.

2. High-Temperature Corrosive Environments

Metallurgical High-Temperature Pipelines: High-purity Alumina ceramic lining resists molten metal corrosion at 1600°C

Chemical Reactors: Acid and Alkali Resistance (pH 1-14), Resistant to weak acids and bases