NSiC Thermocouple Protection Tube Ceramic Sheath Pipe
PRODUCT DESCRIPTION
Silicon nitride bonded silicon carbide (NSiC) protection tube is a high-performance ceramic component widely used as a thermocouple protection tube in extreme environments. Combining the strength and toughness of silicon nitride with the high temperature resistance of silicon carbide.Silicon nitride bonded silicon carbide excellent material properties make it an ideal choice for applications that require high temperature strength, wear resistance, and thermal stability.
Characteristics of NSiC Thermocouple Protection Tube
1、Ultra high temperature tolerance: Long term use temperature: 1600 ℃ (air atmosphere), in reducing gas can reach 1800 ℃；
2、Extreme environmental adaptability: thermocouple protection tube is resistance to chemical corrosion; Molten aluminum (800 ° C), HClgas, sodium vapor；
3、Thermal shock resistance: the critical thermal shock temperature difference Δ T ₐ is 800 ℃；
4、Accurate measurement guarantee: thermal response time: only 8-12 seconds at 1200C (3 times faster than alumina tubes);
5、Electromagnetic shielding: effectively isolates electromagnetic interference.
FEATURES & BENEFITS
High temperature resistance
Thermal shock resistance
High thermal conductivity
High mechanical strength
Acid and alkali resistance
Wear resistance
Selection Guide
(1) Diameter selection
Standard type: Ф 8 / Ф 10mm (balanced strength and response speed) Reinforced type:
Ф12mm with cooling flange (for continuous measurement of molten steel);
(2) Connection method
Quick clamp: suitable for frequent replacement scenarios (such as electric furnace steelmaking);
Threaded seal: M20x1.5+graphite gasket (high-pressure reactor).
MAIN PARAMETER
| High Temperature Kiln Equipment Industry | NSiC |
| SiC Content (%) | 75% |
| SisN+ Content (%) | ≥25% |
| Bulk Density (g/cm3) | 2.73~2.83 |
| Apparent Porosity (%) | <12 |
| Room temperature strength (MPa) | 160~170 |
| Strengthat 1300℃(MPa) | 170~180 |
| Elasticity modulus at 20℃ | 250 |
| Thermal Conductivity At 1200℃(W/mk) | 20 |
| Thermal Expansion x10-6/℃ | 4.7 |
| Max Using Temperature（℃） | 1450℃ |
| Hardness At 20°C (Kg/mm2) | 2500 |
| Fracture Toughness At 20°(MpaxM1/2) | 4.0 |
APPLICATION
1、Black metallurgy industry；
2、Nonferrous metallurgical industry；
3、Chemical high-temperature reaction industry；
4、SiN SiC protective tube should be preferred in the following scenarios：
（1）There is a risk of mechanical impact (such as in continuous casting production lines)；
（2）Strong corrosive molten salt environment (aluminum electrolysis, waste incineration)；
（3）Intermittent production that requires quick disassembly and assembly；
（4）Need for ultra-high precision temperature control (within+1 ℃).
PACKING
ABOUT US
Riseport Global Traders Ltd. (Shenyang) delivers integrated global solutions through customized service offerings that adapt to diverse client needs, supported by an efficient production system equipped with advanced technology to ensure superior quality and rapid response. Our diversified logistics network seamlessly combines sea, air and land transport, providing end-to-end supply chain management that guarantees safe and timely delivery to international markets.
