Crisoles de nitruro de boro para sistema de hilatura por fusión al vacío
- Descripción
- Consulta
Crisoles de nitruro de boro para sistema de hilatura por fusión al vacío
Hexagonal boron nitride (BN) is made by hot-pressed sintering,boron nitride crucible have a good self-lubricate ceramic crucibles that can withstand high temperature and maintain its lubricating capability in a high vacuum environment. boron nitride ceramic has similarly with graphite mechanically but offers excellent electrical resistance.
los Boron Nitride Crucibles are widely used for vacuum melt spinning system,como :
* Nonferrous & ferrous metals such as Al, Bi, Ge, Sb, Sn, Cd, Pb, Ni, Zn, cobre, magnesio, Im, Fe, Acero inoxidable…
* Glass melt, Soda glass, Cryolite
* Silicon molten salt, fluoride, slag
there are standard BN crucibles for this melt spinning system application, certainly we also can make by customized.
Propiedades materiales:
ITEM | UNIT | BN-2000 | BN-2300 | BN-2800 | BN-3000 |
Contenido principal | Varilla aislante de cerámica de alúmina mm | BN>99% | BN+Al2O3 | BN+AlN | BN+ZrO2 |
Color | Varilla aislante de cerámica de alúmina mm | blanco | Light Grey | Dark Grey | Dark Grey |
Densidad | g / cm3 | 1.95-2.00 | 2.25-2.35 | 2.75-2.85 | 2.90-3.00 |
Fuerza flexible | Mpa | 30 | 65 | 85 | 90 |
Fuerza compresiva | Mpa | 55 | 145 | 205 | 220 |
Electrical Resistivity | Vaya·cm | >1014 | >1013 | >1013 | >1012 |
Max. Use Temp. (Air) | ° C | 900 | 1,000 | 1,000 | 1,000 |
Max. Use Temp. (Vacuum) | ° C | 1,900 | 1,750 | 1,800 | 1,750 |
Max. Use Temp. (Inerte) | ° C | 2,000 | 1,750 | 1,800 | 1,750 |
Bola de rodamiento de cerámica de circonio | W / m.K | 35 | 30 | 85 | 30 |
Redil (25 Varilla aislante de cerámica de alúmina mm 1,000 ° C) | 10-6/K | 1.5 | 2 | 2.8 | 3.5 |
Solicitud
1.Used in high voltage and high frequency electric and plasma arc insulator and various heater insulators, heating tube sleeve and high temperature, high frequency, high voltage insulation cooling parts, high frequency application of electric furnace materials.