Reduction furnace is in operation!
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The voltage of the reduction furnace drops too rapidly during operation; address this from several aspects.
It’s better to have curves; otherwise, no one will be able to explain it
When the voltage drops are higher than the standard, what are the hazards, and how can it be controlled to prevent such rapid drops?
Generally, it is due to excessive growth inside the furnace and severe atomization, which results in silicon rods developing numerous cornflower-like or fish-scale patterns.
Handling suggestions: 1. Reduce the current applied to the silicon rods appropriately in order to lower the temperature of the gas field inside the furnace; 2. Increase the ratio of H2 to TCS and raise the amount of hydrogen used. If misting occurs severely inside the furnace, it is necessary to cut off the TCS immediately, and feed material again after repairs are made. Otherwise, it is recommended to shut down the furnace to prevent the formation of fish-scale-shaped inclusions in the material.
Could you explain the method of refeeding? I haven’t used this method yet. Don’t know the key points!
If the temperature control is set high, stopping the current supply or increasing the hydrogen voltage will prevent a rapid drop.
If the temperature control is set high, stopping the current supply or increasing the hydrogen voltage will prevent a rapid drop.
Do not increase the current for now; reduce the ratio, and increase the hydrogen circulation rate. In this way, the voltage will decrease more slowly, the silicon rods will become more dense, and their surface gloss will also be higher
How to increase the hydrogen circulation rate? ? Isn’t extracting hydrogen just about adjusting the ratio?