The correct operation of Shanghai Feiyue vacuum drying oven

correct applicationShanghai Feiyue Vacuum Drying BoxIt is necessary to first evacuate and then heat and increase the pressure, but what is the purpose of doing so?

*The experimental goods are placed in a vacuum box to simulate low sea pressure conditions for low-pressure experiments, and to remove gas factors from the experimental goods. If the heating element is heated first, it will shrink due to the heat, and the vacuum box has excellent sealing. The huge pressure caused by gas shrinkage can lead to the explosion of tempered glass in the inspection window, which is a safety hazard. Vacuuming first and then heating can prevent this risk from happening.

Secondly, the warm air pressure generated by heating is exported to the vacuum pressure gauge, causing the temperature of the pressure gauge to decrease. If it exceeds its operating temperature, it will cause reading errors in the pressure gauge, reflecting precision.

Thirdly, if the pressure is first increased and then evacuated, the warm atmosphere of the box is extracted, causing the temperature of the box to drop during vacuuming. The extracted warm atmosphere will be discharged by the vacuum pump, causing the task temperature of the vacuum pump to be too high, increasing the task frequency of the vacuum pump, and protecting the vacuum pump. Because using an electric vacuum drying oven with accurate operation methods is extremely redundant, it not only ensures safety but also extends the service life of the facility.