Precautions for the use of tube furnace
Precautions for the use of tube furnace:
1. After the furnace is used for the first time or not used for a long time, it should be baked at about 120°C for 1 hour, and used after baking at about 300°C for 2 hours to avoid cracking of the furnace. The furnace temperature should not exceed the rated temperature to avoid damage to the heating element and furnace lining. It is forbidden to directly pour various liquids and dissolved metals into the furnace to keep the furnace clean.
2. If a quartz tube is used in the furnace, when the temperature is higher than 1000 ℃, the high temperature part of the quartz tube will appear opaque. This is called devitrification, which is an inherent defect of continuous fused quartz tube and is a normal phenomenon.
3. When the cold furnace is used, because the tube furnace is cold and needs to absorb a lot of heat, the temperature rise rate in the low temperature section is not easy to be too fast, and the difference in the temperature rise rate of each temperature section is not too large. The sintered material should be fully considered when setting the heating rate The physicochemical properties of the product, so as to avoid the phenomenon of spraying and polluting the furnace tube.
4. Regularly check whether the electrical connection part of the temperature control system is in good contact, and special attention should be paid to whether the connection of each connection point of the heating element is tight.
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