Silicon Nitride Protection Tube, Si3n4 Protection Tube for
Thermocouple
Silicon Nitride (Si3N4) Bonded SiC thermocouple protection tube is
mainly used in the production of aluminum, copper, and zinc, as the
lining material of the molten pool and electrolytic bath (reduction
bath). The sidelining of the reduction bath is eroding by aluminum
and cryolite (used as an additive), but Si3N4 bonded SiC material
could not be eroded by aluminum, and do not have a chemical
reaction with cryolite. So this kind of material is ideal for the
lining bricks of the electrolytic bath. In particular, this kind of
bricks has the excellent properties of high strength, abrasive
resistance and nonconductive, so the copolymer (Al2O3 and
Cryolite). The copolymer likes protective film to protect the
working lining and improve the service life of the electrolytic
bath. At the same time, the Si3N4 bonded SiC bricks have lower
thermal conductivity than silicon bricks, so they can reduce the
thickness of the side wall or input higher power to expanse the
loading capacity of the electrolytic bath, and increase the output.
Because of the high resistivity of the material, it can reduce the
power consumption of the side -wall by about 15%, saving energy and
protecting the environment.
- Best producing technology in China. Our tubes can be instead of
Japanese tubes in Aluminium melt furnace.
- Very smooth surface to avoid any blotted metal liquid.
- Good thermal conductivity.
- High temperature strength.
- Special groove to be easily fixed.
Silicon Nitride Protection Tube Technical Specifications
| Density | 2.8 g/cm3 |
| Porosity | ≤16% |
| Phase composition | ß-Si3N4, Oxide |
| SIC | 72% |
| Si3N4 | 21% |
| compressive strength | 140MPa |
| flexure strength | 35MPa |
| Thermal conductivity | 16 w/m*k |
Si3n4 Protection Tube for Thermocouple Standard size (in stock):
- OD28 x ID16 x Length 200-1500mm
- OD45 x ID25 x Length 200-2000mm
- OD50 x ID25 x Length 200-2000mm
Other Size: Customizable according to your requirement
If you're interested in our Silicon Nitride Protection Tube, Si3n4 Protection Tube for
Thermocouple, contact us now to get a quote!
