High Thermal Shock Resistance Silicon Nitride Sealing Pipe and Si3N4 Sealing Valve with High Density for Low-Pressure Die Casting
Price:
200-500 yuan/kg
MOQ:
Negotiable
Delivery Time:
Negotiable
Brand:
KEGU
Product Description
Silicon Nitride (Si3N4) Sealing Pipes & Valves for Low-Pressure Die Casting
Engineered for extreme industrial environments, our high-performance silicon nitride ceramic sealing components deliver unmatched durability and reliability in aluminum processing applications. These materials offer superior thermal and mechanical properties, forming the foundation for innovative equipment like the L-shaped high thermal conductivity submerged heating appliance.
Why Silicon Nitride for Sealing Applications?
Unmatched Performance:
- Optimal for Low-Pressure Die Casting: High density, strength, and exceptional thermal shock resistance (ΔT 400-500°C) make Si3N4 the premier choice for sealing tubes and valves.
- Superior Wear Resistance: Outperforms aluminum titanate and alumina ceramics, ensuring long-term airtightness and reducing maintenance frequency.
- Excellent High-Temperature Strength: Maintains structural integrity under frequent thermal cycling, ensuring prolonged service life.
Design & Installation Note: While silicon nitride offers exceptional strength, its ceramic nature requires careful handling. Avoid large mechanical shocks by ensuring proper design and installation of lifting and transmission equipment.
Technical Property Comparison: Silicon Nitride vs. Alternative Materials
| Category | Property | Unit | 99% Al₂O₃ | S-SiC | ZrO₂ | Si₃N₄ |
|---|---|---|---|---|---|---|
| Physical | Density | g/cm³ | 3.9 | 3.1 | 6.0 | 3.2 |
| Water Absorption | % | 0 | 0.1 | 0 | 0.1 | |
| Physical | Sintering Temperature | °C | 1700 | 2200 | 1500 | 1800 |
| Mechanical | Hardness (HV) | HV | 1700 | 2200 | 1300 | 1400 |
| Flexural Strength | MPa | ~343 | ~392 | ~882 | ~686 | |
| Compressive Strength | MPa | ~2942 | ~1961 | ~1961 | ~2255 | |
| Thermal | Max Working Temperature | °C | 1500 | 1600 | 1300 | 1400 |
| Thermal Expansion Coefficient (0-1000°C) | 10⁻⁶/°C | 8.0 | 4.1 (0-500°C) | 9.5 | 2.0 (0-500 °C) | |
| 5.2 (500-1000°C) | 4.0 (500-1000 °C) | |||||
| Thermal Shock Resistance | ΔT (°C) | 200 | 250 | 300 | 400-500 | |
| Thermal Conductivity (25°C) | W/m*K | 31 | 100 | 3 | 25 | |
| Thermal | Thermal Conductivity (300°C) | W/m*K | 16 | 100 | 3 | 25 |
| Electrical | Volume Resistivity (20°C) | Ω*cm | >10¹² | 10⁶-10⁸ | >10¹⁰ | >10¹¹ |
| Dielectric Strength | kV/mm | 18 | Semiconductor | 9 | 17.7 |
Key Benefits for Your Operation:
- Extended Component Lifespan: Reduced downtime and replacement costs.
- Consistent Sealing Performance: Maintains airtight integrity under thermal stress.
- Enhanced Process Reliability: Minimizes leaks and process interruptions in die casting.
Applications: Sealing pipes, valves, and bespoke components for low-pressure die casting machines, aluminum transfer systems, and high-temperature industrial fluid handling.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Shaanxi KeGu New Material Technology Co., Ltd
Location
5# Chaoyang Road,Weicheng Sub-district，Qinhan New City, Xixian New Area, Xi'an Shaanxi Province,China,712039
Contact Person
Yuki