Thermocouple Protection Tube

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Insulation and Refractory Materials

silicon carbide thermocouple protection tube
thermocouple protection tubes
silicon nitride thermocouple protection tube
high temperature resistance
thermocouple with ceramic protection tube
Thermocouple Protection Tube Supplier
silicon carbide thermocouple protection tube
thermocouple protection tubes
silicon nitride thermocouple protection tube
high temperature resistance
thermocouple with ceramic protection tube
Thermocouple Protection Tube Supplier
Thermocouple Protection Tube

Laurel Silicon nitride thermocouple protection tube is a tubular ceramic product made mainly of silicon nitride (Si3N4). It is used to protect temperature-measuring elements such as thermocouples from harsh environments, ensuring the accuracy and stability of temperature measurement.

Product Details

Thermocouple protection tubes are of great significance in maintaining the integrity and measurement accuracy of thermocouple sensors. They are meticulously designed to withstand harsh operating conditions. In industrial settings like furnaces, where there are extreme heat, corrosive gases, and abrasive particles, these tubes act as a shield for the delicate thermocouple elements.




They come with different characteristics that make them suitable for various environments. Some offer excellent mechanical strength and corrosion resistance, while others combine high strength, heat resistance, and resistance to chemical attack. By protecting the thermocouple from physical damage, chemical corrosion, and thermal shock, these protection tubes ensure reliable temperature measurement. This is crucial for the smooth and efficient operation of processes in industries such as metallurgy, glassmaking, chemical engineering, and power generation.


Table parameters

UnitResult


GPSN()RSSN()
Bulk density g/cm3>3.2>2.4
Si3N4%>92>92
Bending StrengthMpa>600>200
Thermal Expansivity (W/mk)16-2214
Porosity%0<15
Working TemperatureºC14001150
Hardness(HRA)
>92>85


Features

★ Offers excellent compactness and high strength from its dense structure.

★ Exhibits good thermal conductivity and strong thermal shock resistance.

★ Non-wetting to non-ferrous metal melts like aluminum and is highly corrosion resistant.

★ Features high temperature resistance and a low thermal expansion coefficient.


The application fields of thermocouple protection tubes are extensive, mainly in the following aspects:


Metallurgical Industry: In steel and non - ferrous metal smelting, forging, and heat treatment processes, thermocouple protection tubes are used to measure and control temperatures. They can withstand high - temperature molten metal environments and corrosive gases, ensuring accurate temperature measurement and providing a basis for optimizing process parameters to improve metal quality.

Glass Industry: In glass furnaces, these tubes are used to measure the temperature of the molten glass and the furnace body. They help maintain a stable temperature environment, which is crucial for the even melting of glass raw materials and the quality control of glass products, contributing to the production of high - quality glass with fewer defects.

Chemical Industry: In chemical reaction processes that require strict temperature control, such as organic synthesis and catalytic reactions, thermocouple protection tubes are used to accurately measure and monitor the reaction temperature. They resist chemical corrosion and ensure the reliability of temperature data, which is essential for controlling the reaction process and improving product yield and quality.

Power Generation Industry: In power plants, especially in coal - fired boilers and gas - fired turbines, thermocouple protection tubes are used to measure the temperature of the flue gas, steam, and various components. This helps monitor the operating status of the equipment, optimize the combustion process, and ensure the safe and efficient operation of the power generation system.

Ceramics Industry: During the firing process of ceramics, thermocouple protection tubes are used to measure and control the temperature in the kiln. They can endure the high - temperature environment in the kiln and provide accurate temperature information, which is beneficial for ensuring the quality and consistency of ceramic products, whether they are daily - use ceramics, industrial ceramics, or electronic ceramics.

Automotive Industry: In automotive engines and exhaust systems, thermocouple protection tubes are used to measure the temperature of the engine coolant, exhaust gas, and other parts. This provides important data for engine management systems to optimize fuel combustion, reduce emissions, and improve the overall performance and reliability of the vehicle.


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