Silicon nitride ceramic punch
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材料及含量
产品特点
1. Corrosion Resistance: In a 3.5% NaCl solution, the average annual corrosion depth is only 0.02 μm, which is four orders of magnitude lower than that of 316 stainless steel.
2. Wear Resistance: Hardness HV ≥ 1500, and the performance remains stable in environments with abrasive particle media.
3. Lightweight: Density is approximately 3.2 g/cm³, significantly reducing component inertia.
4. Thermal Shock Resistance: Can withstand rapid heating and cooling conditions (ΔT > 800℃) without easily cracking.
5. Long Lifespan: In high-pressure seawater erosion tests, the edge wear after 1000 hours of operation is only 3-5 μm.
产品详情
Silicon Nitride Ceramic Punch Product Introduction:
Silicon nitride ceramic punches are high-performance ceramic products made of materials with strong covalent bonds, possessing the following significant characteristics:
1. High hardness and high strength: Hardness can reach HRA 91-93, and flexural strength is >490 MPa, making it one of the hardest materials in the world.
2. Excellent thermal performance: Low thermal expansion coefficient (3.2 × 10⁻⁶/℃), high thermal conductivity (20-25 W/(m·K)), and excellent thermal shock resistance (ΔT > 800℃).
3. Superior chemical stability: Resistant to corrosion from almost all inorganic acids and caustic soda solutions below 30%, and forms a protective SiO₂ layer in oxidizing environments.
4. High-temperature performance: Can be used up to 1200℃ in air and up to 1400℃ in a protective atmosphere.
Technical Parameters
Hardness: HV ≥ 1500.
Compressive Strength: > 2500 MPa.
Fracture Toughness: 6.5-7.5 MPa·m¹/².
Thermal Conductivity: 20-25 W/(m·K).
Coefficient of Thermal Expansion: 3.2 × 10⁻⁶/℃.
Operating Temperature: ≤ 1200℃ in air, ≤ 1400℃ in protective atmosphere.
Application Fields
Silicon nitride ceramic plungers are widely used in various industrial fields:
Mechanical manufacturing: Valves, pipes, classifying wheels, ceramic cutting tools, bearing balls, etc.
Metallurgical industry: High-temperature mold components, stamping tools.
Chemical equipment: Corrosion-resistant pump bodies, sealing rings, heat exchanger components.
Aerospace: Engine bearings, high-temperature structural components.
Electronics and semiconductors: Thermal conductive substrates, precision machining tools.
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