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Nitride bonded silicon carbide production tube
Si3N4 bonded SiC ceramic refractory material, is mixed with high pure SIC fine powder and Silicon powder, after slip casting course, reaction sintered under 1400~1500°C. During the sintering course, filling the high pure Nitrogen into the furnace, then the silicon will react with Nitrogen and generate Si3N4,So Si3N4 bonded SiC material is composed of silicon nitride (23%) and silicon carbide(75%) as main raw material,mixed with organic material,and shaped by mixture, extrusion or pouring,then made after drying and nitrogenization.
Si3N4 bonded SiC as a new type refractory material,is used widely.The applying temperature is 1400 C.It has better thermal stability,thermal shock,which is better than plain refractory material and recrystallized SiC.It also has antioxidation,high corrosion resistant,wear-resistantance,high bending strength.It can resist corrosion and scouring,be no polluted and fast heat conduction in molten metal such as AL,Pb,Zn,Cu ect.
Please check below specification:
- The diameter of Si3N4 bonded SiC thermocouple protection tube is Φ12-80mm,length is 1600 mm.It can be usded in high temperature kiln furnace and all kinds of atmosphere.It also can be directly used in all kinds of melted liquid.
| Common size for SiC & Si3N4 protection tubes | ||
| Outer diameter | Inner diameter | Length |
| 13 | 10 | 500-1000 |
| 16 | 8-10 | 300-1000 |
| 20 | 12 | 300-1200 |
| 25 | 14-15 | 1500 |
| 28 | 16-20 | 300-1200 |
| 30 | 10-20 | 1500 |
| 35 | 25 | 300-1250 |
| 40 | 25-28 | 300-12000 |
| 50 | 25 | 300-1200 |
| Remarks:the protection tubes can be customized | ||
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