Si3N4 Protection Tube for Thermocouple

Si3N4 Protection Tube for Thermocouple

Si3N4 or Sialon/Syalon material can be widely used as the main material of protection tubes for thermocouple, for long working life and free  maintenance.

As the necessary means of measuring temperature, thermocouple protection tubes are applicable in metallurgical industry, such as  aluminum, tin, lead, zinc etc. The advantages are:

●Si3N4 material has better thermal shock resistance and high-temperature mechanical strength, light weight, high strength and easy to operate. It will not burst even if exchange is done in the course of processing, making it easy for production and maintenance.

●Si3N4 material has the low conductive advantage. Its low specific heat minimizes loss of heat. This will be conducive to achieving the accuracy of temperature measurement for the thermocouple protection tube.

●Molten aluminum’s low wettability prevents stick of slagging in the tube, thus easy to maintain and operate.

●Si3N4 has excellent corrosion resistance and wear resistance, and ensure longer working life. If proper maintenance, the actual using life can be up to 2-3 years.