Vacuum furnace operation precautions
1. The cooling water source of the intermediate frequency power supply. The vacuum furnace body and the induction coil must be filled with water and there should be no impurities in the water.
2. Start the water pump to make the water frequency of the medium frequency power supply. Vacuum furnace induction coil and furnace cooling system normal, and adjust the water pressure to the specified value.
3. Check the vacuum pump power supply system, the belt pulley is tight, and the vacuum pump oil is located in the middle line of the oil seal observation hole. After checking, manually turn the vacuum pump belt pulley. If there is no abnormality, the vacuum pump can be started with the butterfly valve closed. 4. Check the condition of the vacuum furnace, require the first level of hygiene in the vacuum furnace. The induction coil is well insulated, and the sealed vacuum tape has elasticity and the size is qualified.
5. Check if the lever handle of the vacuum furnace body is flexible.
6. Check that the rotary McGee vacuum gauge is satisfactory.
7. Check the graphite crucible and install the furnace accessories.
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