High-Performance Silicon Nitride Ceramic Nozzles with HV10 Ge 1500 for Wear Resistance
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
Negotiable
Brand:
Dayoo
Product Description
High-Performance Ceramic Nozzles Silicon Nitride Material With HV10 Ge 1500 For Wear Resistance
Silicon nitride (Si₃N₄) nozzles are manufactured using high-purity silicon nitride powder (Si₃N₄ ≥ 99%) through gas pressure sintering (GPS) technology. These nozzles exhibit exceptional high-temperature resistance, corrosion resistance, and thermal shock resistance, making them ideal for extreme working conditions in demanding industrial applications.
Primary Applications
- Metal Processing: High-temperature molten metal atomization nozzles
- Chemical Industry: Corrosive fluid injection systems
- Energy Sector: Fuel injectors for gas turbines
- Environmental Equipment: Flue gas desulfurization spray guns
- 3D Printing: Metal powder atomization nozzles
Key Advantages
- Extreme Temperature Resistance: Continuous use at 1400°C (short-term 1600°C)
- Superior Thermal Shock Resistance: Withstands rapid temperature changes up to 1000°C
- Excellent Corrosion Resistance: Resistant to acids and alkalis (except hydrofluoric acid)
- Ultra-High Hardness: HV10 ≥ 1500, outstanding wear resistance
- Extended Service Life: 5-8 times longer lifespan than metal nozzles
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | High-purity Si₃N₄ (≥99%) |
| Density | 3.2-3.3 g/cm³ |
| Flexural Strength | ≥600 MPa |
| Max. Operating Temp | 1400°C (1600°C short-term) |
| Thermal Expansion Coefficient | 3.2×10⁻⁶/°C (20-1000°C) |
| Hole Diameter Tolerance | ±0.02 mm |
| Surface Roughness | Ra ≤ 0.2 μm |
Manufacturing Process
- Material Preparation: High-purity Si₃N₄ powder (D50 ≤ 0.5 μm) mixed with sintering aids
- Forming Process: Isostatic pressing (200 MPa)
- Gas Pressure Sintering (GPS): Sintered at 1800°C in nitrogen atmosphere
- Precision Machining: CNC grinding for high-precision dimensions
- Quality Inspection: X-ray flaw detection, flow rate testing, and strength verification
Usage Guidelines
⚠️ Installation: Use ceramic-specific fixtures to avoid mechanical stress concentration
⚠️ Temperature Control: Heating rate ≤5°C/min (above 800°C)
⚠️ Media Restrictions: Avoid hydrofluoric acid and molten alkali metals
⚠️ Maintenance: Regularly inspect nozzle orifice for wear
After-Sales Service
- Technical Support: Free flow optimization solutions
- Customization: Non-standard hole sizes and shapes available
- Emergency Response: 24-hour technical consultation
FAQ
Q: What are the advantages of Si₃N₄ nozzles over SiC nozzles?
A: Better thermal shock resistance, superior alkali corrosion resistance, and suitability for harsher conditions.
Q: What is the maximum operating pressure?
A: Standard nozzles withstand 20 MPa, while specially designed versions can handle 50 MPa.
Q: When should a nozzle be replaced?
A: Replace if flow rate deviation exceeds ±15% or visible wear is detected.
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Company
Dayoo Advanced Ceramic Co.,Ltd
Location
No. 6, Shuangjin Street, Qiubin Industrial City, Qiubin Street, Wucheng District, Jinhua, Zhejiang
Contact Person
Lu