Products
Specialized for polycrystalline silicon reduction furnace.
INTRODUCTION:
The Silicon Nitride Ceramic Exhaust Hood is a device designed specifically for polycrystalline silicon reduction furnaces. Made of silicon nitride (Si3N4) ceramic material, it has high temperature resistance, corrosion resistance, no pollution, strong thermal shock resistance, high mechanical strength, easy operation, high insulation degree, not affected by reducing atmosphere, stable performance, long service life and other properties. It is applied in the photovoltaic industry and can effectively prevent silicon slag and silicon blocks from entering the exhaust pipeline, helping enterprises improve the purity of polycrystalline silicon, reduce equipment maintenance costs and meet strict environmental requirements.
FEATURES:
1. Dimensional stability under high temperature environment
2. Life advantages in complex thermal cycles
Silicon nitride exhaust hood in photovoltaic hydrogen reduction furnace: After 1000 thermal cycles from 1200 degree to water cooling (room temperature), the material did not crack or deform, while traditional silicon carbide exhaust hood can only withstand 300 cycles under the same conditions.
3. High temperature compatibility with dissimilar materials
Silicon nitride exhaust hoods are often connected to metal flanges or graphite electrodes. Due to its close thermal expansion coefficient to graphite, the interface thermal stress is reduced by 60% compared to alumina metal joints, significantly reducing the risk of high-tem
