Precautions for use of vacuum tubular furnace

Time：2022-06-29

Maintenance and precautions of vacuum tubular furnace:
1. when the vacuum tubular furnace is used for the first time or again after long-term shutdown, it must be dried The oven drying time shall be four hours at room temperature of 200 ℃ 200 ℃ to 600 ℃ for four hours When in use, the furnace temperature shall 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 50 ℃ below the maximum temperature. At this time, the furnace wire has a long service 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 such as grease need to be heated, a large amount of volatile gas will affect and corrode the surface of electric heating elements, destroy them and shorten their service life Therefore, it is necessary to timely prevent and properly seal containers or properly open holes for elimination during heating

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

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

5. always keep the furnace clean and timely remove oxides and other things in the furnace

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

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