Production control of polycrystalline silicon 24 rod pairs
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Does anyone have experience in producing 24 pairs of rods? Could you give some advice?
Same as those with 9 pairs and 12 pairs of rods, hey
It’s easy to start the furnace, but difficult to shut it down; it’s easy to stop the furnace quickly, but this can cause the rods to crack. Apart from high yield, it has many disadvantages. Now, consider replacing the silicon core to ensure production volume, maximize its thickness, and prevent rod inversion. It is still in the experimental stage; no pressure treatment has been applied. The time required is twice that of 12 pairs of rods, with the same rate of growth per unit. The graphite card holder, the electrode PTFE sleeve, and the viewing port all require further modification
Twenty-four pairs of rods are just an enlarged version of twelve pairs of rods; they have more drawbacks, and the probability of failure is twice that of twelve pairs of rods.
What do you think are the reasons for the furnace failure? Besides tipping over at the start and when the furnace is turned on, at what other stage might tipping over occur?
First, the distribution of the air inlets needs to be adjusted so that the airflow enters the furnace evenly; this ensures uniform growth of the silicon rods and prevents them from collapsing when they are still small. Of course, the more rods there are, the harder it is to control things