Silicon Nitride Thermocouple Sheath
Premium Ceramic Sheath for Thermocouple Protection in Molten Metal Applications
Key Features
Exceptional Thermal Shock Resistance
With its low thermal expansion coefficient, our silicon nitride tube can withstand rapid temperature changes without cracking - ideal for demanding thermal cycling environments.
01
High Mechanical Strength
Maintains structural integrity under extreme mechanical stress and high temperatures, outperforming traditional ceramic tubes such as alumina and silicon carbide.
02
Corrosion & Erosion Resistant
Designed to resist chemical attacks and slag build-up in molten aluminum, zinc, copper, and other non-ferrous metal environments.
03
Extended Service Life
Longer lifespan reduces replacement frequency and overall maintenance costs, helping customers achieve lower total cost of ownership.
04
Excellent Insulation Properties
High electrical resistance ensures accurate temperature readings and safe operation even in harsh working conditions.
05
Why Choose Silicon Nitride for Thermocouple Protection?
Thermocouples are crucial for accurate temperature control in metal processing. However, failure due to tube cracking, chemical erosion, or thermal fatigue is common with conventional materials.
Our silicon nitride thermocouple protection tube solves these issues by offering:
Increased process reliability
Reduced downtime and replacement frequency
Enhanced safety and product quality
Common Applications
Molten aluminum, copper, and zinc processing
01
Metal casting and smelting
02
Glass melting furnaces
03
Foundry temperature monitoring systems
04
Technical Specifications
| Property | Value |
|---|
| Material | Silicon Nitride (Si₃N₄) |
| Max Working Temperature | 1400–1500°C |
| Thermal Conductivity | >15 W/m·K |
| Density | ~3.2 g/cm³ |
| Corrosion Resistance | Excellent (Molten Metals, Slag, Oxidation) |
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