Vacuum Furnace Automatic Control System
What are the main parts of automatic control of vacuum furnace
In order to realize the automatic control of vacuum furnace operation process, the automatic control system needs to detect the vacuum degree, temperature parameters, process operation parameters and state of degassing chamber, heating chamber and cooling chamber, and ensure the control output of process temperature control requirements of each chamber. It mainly includes the following items:
1. Detection parameters: temperature value of three temperature detection points in degassing chamber, heating chamber and cooling chamber, pressure value in vacuum furnace, vacuum degree in furnace, etc.
2. Detection status: over-temperature alarm, water shortage alarm and over-pressure alarm in degassing chamber, heating chamber and cooling chamber;
3. Heating setting: By controlling the operation of temperature control meter, the heating power supply can be adjusted to change the temperature in the furnace. The temperature of each chamber is sampled by thermocouple. The temperature of the furnace body measured is compared with the temperature required by the process, and the deviation is calculated. The temperature control meter controls the heating current of the heating power supply plate by calculating the deviation according to certain rules, so as to control the temperature. High temperature vacuum furnace.
4. Control output: Control the conveyor mechanism to transport the truck between heating chamber, degassing chamber and cooling chamber, control the action of diffusion pump, mechanical pump, Roots pump, main valve, rough pump valve, front valve, etc., to achieve the required vacuum environment.