High-Temperature Industrial Measurement Protection Sheaths
This series of thermocouple protection sheaths are manufactured from high-purity silicon carbide (SiC) ceramic materials, including pressureless sintered silicon carbide (SSiC) components and reaction bonded silicon carbide (RB-SiC) materials, providing reliable protection for temperature measurement in extreme industrial environments.
| Item | HALSIC-I (Reaction-Bonded) | HALSIC-S / RX (Recrystallized/Doped) | HALSIC-S (Pressureless Sintered) |
|---|---|---|---|
| Max. Long-Term Service Temp. | 1350°C (Oxidizing/Reducing Atmosphere) | 1600°C (Oxidizing Atmosphere) >2000°C (Protective/Inert Atmosphere) | 1600°C (Oxidizing Atmosphere) |
| Thermal Shock Resistance (ΔT) | Excellent, can withstand rapid heating/cooling shocks | ||
| Thermal Conductivity | High, ensures rapid temperature measurement response | ||
| Key Corrosion Resistance | Highly resistant to most acids, molten salts, and molten metals (e.g., Al, Zn, Pb, Sn); stable in strong alkaline environments. | ||
| Key Mechanical Properties | High hardness, high flexural strength, excellent resistance to abrasive particle erosion. | ||
Temperature measurement inside pyrolysis furnaces, gasifiers, blast furnaces, and sintering furnaces using high-temperature silicon carbide ceramic protection tubes for improved thermal stability and corrosion resistance.
This immersion heater protection sheath is manufactured using high-performance silicon carbide ceramic materials designed for long-term operation in molten aluminum and aluminum alloy furnaces.
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Thermal Performance: Utilizes high thermal conductivity material and an optimized thin-wall structural design, resulting in low thermal resistance, high heat transfer efficiency, and low energy consumption.
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Chemical Stability: Possesses excellent resistance to erosion and corrosion from molten aluminum and its alloys, with no element leaching, ensuring metal purity.
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Structural Reliability: Features an extremely low coefficient of thermal expansion and outstanding thermal shock resistance, maintaining structural integrity and preventing cracking or spalling even under frequent thermal cycling.
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Service Life: Under standard operating conditions, the design life is significantly longer than that of traditional materials, reducing replacement frequency and overall maintenance costs.
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Installation & Maintenance: Simple structural design, compatible with standard heater interfaces, making installation and replacement operations straightforward.
This product combines high-performance silicon nitride ceramics with optional reaction bonded silicon carbide structural components for demanding molten metal heating applications.
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Comprehensive Protection: Provides an all-around protective barrier for the heating element with excellent high-temperature resistance, corrosion resistance (especially against molten metal erosion), and high mechanical strength.
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Thermal Management: Good thermal conductivity (~15-25 W/m·K) helps transfer heat evenly and rapidly to the molten bath, reducing localized overheating and improving heating uniformity and energy efficiency.
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Enhanced Reliability: Significantly reduces the risk of heater failure due to short circuits or corrosion caused by sheath damage, increasing the overall Mean Time Between Failures (MTBF) of the heating system.
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Standard Size Range: Outer Diameter φ50mm - φ430mm; Length ≤ 1350mm.
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Customization Service: Non-standard dimensions, special shapes, interface configurations, and wall thickness optimization can be designed based on customer-provided heater drawings or specific operating condition requirements.
We provide advanced ceramic solutions for:
- thermocouple protection sheaths,
- immersion heater tubes,
- molten aluminum systems,
- kiln and furnace temperature measurement,
- and high-temperature corrosion-resistant applications.
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