Dayoo Advanced Ceramic Co.,Ltd
| Place of Origin | Made In China |
| Brand Name | Dayoo |
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Product Specification
| Place of Origin | Made In China | Brand Name | Dayoo |
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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.
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
✅ 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
| 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 |
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
⚠️ 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
Technical Support: Free flow optimization solutions
Customization: Non-standard hole sizes and shapes available
Emergency Response: 24-hour technical consultation
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.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics. Deyu Precision Ceramics Technology Co., Ltd. has many years of e... We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics. Deyu Precision Ceramics Technology Co., Ltd. has many years of e...
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