Heavy-Duty Refractory Protection for Extreme Temperatures, Corrosive Gases, and Molten Metal Baths
Manufactured using pressureless sintering technology, Sintered Silicon Carbide (SSiC / SiC) ceramic protection tubes are engineered to shield temperature sensors (thermocouples and pyrometers) from mechanical impact, thermal degradation, and aggressive chemical attack in high-temperature furnaces and non-ferrous melting processes[cite: 12, 13, 14]. Its dense, non-porous structure ensures non-wetting properties against molten aluminum, zinc, and flux dross[cite: 12, 15].
Key Advantages
- High Temperature Resistance up to 1650°C: Retains high flexural strength and dimensional stability up to 1650°C in atmospheric environments and 1350°C in molten metals[cite: 12].
- Outstanding Corrosion and Erosion Resistance: Chemically inert against strong acids, corrosive furnace gases, and molten aluminum wash[cite: 12].
- Rapid Thermal Response: High thermal conductivity ensures instantaneous temperature reading and precise thermal tracking[cite: 12, 13].
- Non-Wetting to Molten Metals: Repels liquid metal adhesion and slag sticking, preventing bath contamination and extending cleaning intervals[cite: 12, 15].
- Grooved Collar Mounting Neck: Precision-machined collar groove allows secure clamping and gas-tight installation with mounting flanges[cite: 13, 14, 15, 17].
Technical Specifications
| Specification | Value |
|---|---|
| Material | Pressureless Sintered Silicon Carbide (SSiC / SiC) |
| Max Operating Temperature | 1650°C (Atmospheric) / 1350°C (Molten Metal Bath) |
| Bulk Density | ≥ 3.10 g/cm³ |
| Hardness (Vickers / Mohs) | > 2500 HV / Mohs 9+ |
| Bending Strength (20°C) | ≥ 400 MPa |
| Configuration | One-end closed (rounded bottom), grooved open mounting neck[cite: 12, 13] |
| Standard Dimensions (OD / ID) | Ø 20 / 10 mm, Ø 25 / 12 mm, Ø 28 / 16 mm, Ø 30 / 18 mm |
| Standard Lengths | 300 mm – 1500 mm (Custom dimensions available) |
Applications
Molten aluminum melting and holding furnaces, low-pressure casting machines, chemical reactors, ceramic sintering furnaces, incinerators, and metallurgical heat treatment facilities.
Tags: silicon carbide tube, SSiC protection sheath, SiC thermocouple sheath, ceramic protection tube, refractory ceramic tube
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