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Precautions for use of vacuum tube furnace

Maintenance and precautions of vacuum tube furnace:

1. When the vacuum tube furnace is used for the first time or is used again after long-term shutdown, it must be dried. The drying time should be 200 ℃ for four hours and 200 ℃ for four hours to 600 ℃ for four hours. During use, the maximum furnace temperature should not exceed the rated temperature to avoid burning the electric heating elements It is forbidden to pour various liquids and soluble metals into the furnace. It is better to work below the maximum temperature of 50 ℃. At this time, the furnace wire has a long life

2. The vacuum tube furnace and controller must work in a place where the relative humidity does not exceed 85 and there is no conductive dust, explosive gas or corrosive gas When metal materials with grease need to be heated, a large amount of volatile gas will affect and corrode the surface of the electric heating element, so that it can be destroyed and shorten its service life. Therefore, timely prevent and properly seal the container or properly open holes to eliminate it during heating

3. According to the technical requirements, regularly check whether the wiring of the electric furnace and controller is in good condition, whether the pointer of the indicator is stuck and detained when moving, and use the potential difference meter to check the error increase of the instrument caused by the fatigue and balance damage of the magnetic steel, demagnetization, expansion wire, spring piece, etc

4. The controller of vacuum tube furnace shall be used within the range of ambient temperature 0-40 ℃

5. Keep the furnace clean and remove oxides in the furnace in time

6. Do not pull out the thermocouple suddenly at high temperature to prevent the jacket from cracking