Precautions in automatic control of vacuum furnace

In order to complete the automatic control of the above vacuum furnace process, the automatic control system needs to detect the vacuum degree, temperature parameters, technical operation parameters and conditions of degassing chamber, heating chamber and cooling chamber, and ensure the control output of each chamber's technical temperature control requirements. There are mainly the following:
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 and other parameters;
2) detection status: over temperature alarm, over pressure alarm and water shortage alarm of degassing chamber, heating chamber and cooling chamber;
3) heating is given: after manipulating the operation of the temperature control meter, then adjust the heating power to change the furnace temperature. The temperature of each room is sampled by thermocouple, and the temperature of the furnace body tested is compared with the temperature value required by the technology to check the error. The temperature control meter controls the heating current of the heating power panel according to certain rules, and then controls the temperature.
4) control output: the control transmission organization enables the delivery of the charging car between the degassing chamber, heating chamber and cooling chamber, and controls the action of the dispersion pump, roots pump, mechanical pump, main valve, coarse pumping valve, front valve and other valves to reach the required vacuum environment.