What is the impact of surface smoothness in the reduction furnace on the production of silicon rods?
Thread Content
During operation, the reduction furnace develops certain crystallizations on its walls, which affects the smoothness of the inner wall. At this point, what impact will a decrease in the smoothness of the inner wall of the furnace have on the production of silicon rods? Would friends who are interested in this area like to share their opinions? Is it still necessary to polish the inner wall of the reduction furnace again?
Even foreign people’s stoves have silver-plated inner walls
Mirror reflection reduces the loss of thermal radiation from the silicon rods, thereby lowering the energy required for reduction. As for whether to use silver or gold plating, I think it’s just a gimmick – it’s completely unnecessary for producing solar-grade polycrystalline silicon. Of course, silver plating increases the cost of the equipment, which means foreigners can earn more profits.
Reply to 4# tzm10: Don’t you think what you said is contradictory? ? Since it is already known that specular reflection can reduce the reduction energy consumption, then what is the purpose of silver plating the inner wall? ? ? ? ? ?
Grind and polish it to make the furnace walls as smooth as possible.
In my opinion, each time the reduction furnace is operated at high temperatures, amorphous silicon deposits form on its walls, and the furnace itself also undergoes high-temperature passivation. In fact, it is sufficient to clean away the amorphous silicon deposits from the furnace walls; there is no need to remove the high-temperature passivation layer on those walls, as this helps to protect them and has no negative impact on the products.
Reply to 5# mao12345: Electro-polishing can also achieve the same result; there’s no need for silver plating
Just clean it, and the surface will gradually become less shiny; it seems that the scrubbing effect isn’t very good!
Proper cleaning is essential; there’s no need for polishing as long as there are no major defects, and polishing won’t make any difference after the device has been used a few times
Use a roughness tester to check it; if the precision decreases, it should be repaired promptly by polishing it to a mirror finish. For the repair and polishing of online equipment, please contact: 13898980209