400A Pulse Power Vacuum Heat Treat Oven Plasma Ion Nitriding Furnace 400A

WONDERY VACUUM PULSE PLASMA ION GAS Nitriding Furnace Pulse Power Supply
 
1.Application
The industrial gas nitriding furnace is mainly used for ion nitriding, ion nitrocarburizing (soft nitriding) plasma chemical heat treatment process of mechanical parts to modify the surface of mechanical parts and obtain the required mechanical and physical and chemical properties.
The complete set of industrial heat treatment furnace is composed of ion pulse power supply, vacuum furnace body, vacuum acquisition system, temperature measurement and control system, gas supply system, etc.
 
2.Technical Parameters

 
Duty cycle (pulse power supply):0.10-0.85 adjustable
Pulse frequency (pulse power supply):1000hz
Control mode (pulse power supply): constant frequency and width adjustment
Output waveform (pulse power supply): rectangular square wave
 
3.Pulse Ion Power Supply
3.1 pulse ion power supply
  Pulse ion power supply is a chopper composed of IGBT components and control circuit, which is added on the basis of DC ion power supply. Through chopping, the pulse current with adjustable duty cycle can be obtained. Compared with DC power supply, pulse power supply has the advantages of fast arc extinguishing and energy saving (about 20% power saving). It is an updated product of DC power supply. This power supply can be widely used in ion nitriding, ion carburizing, ion metallizing and other fields.
The pulse ion power supply for gas nitriding furnace is equipped with protection against anode and cathode short circuit, overcurrent and overvoltage, phase failure and misoperation, which improves the self-protection function of the power supply against external factors.
The pulse ion power supply produced by our company is divided into instrument control type and computer control type.
3.2 instrument controlled pulse ion power supply
  Users can set multi-stage temperature rise curve and holding stage in the temperature controller in advance according to the process requirements, and set multi-stage pressure rise curve and pressure maintenance platform in the pressure controller. Through fuzzy adaptive PID regulation and control, it can ensure that the temperature and pressure are completely carried out in the vacuum nitriding furnace according to the set process, and complete the automatic control of the whole process. In this way, manpower is saved, the influence of manual operation on process quality is avoided, and the stability and reproducibility of process quality are greatly improved.
The following figure shows the temperature curve and pressure curve of a process, which can be set in the temperature controller and pressure controller.
3.3 computer controlled pulsed ion power supply
  Computer controlled pulsed ion power supply has been widely used for plasma ion nitriding furnace.
Its host adopts Mitsubishi programmable controller and general commercial computer (or industrial computer), and MCGS Chinese industrial control configuration software. It has 10 sections of temperature rise and insulation PID control, with instrument temperature control accuracy of ± 1 ℃, 10 sections of pressure rise and pressure holding control, and pressure control accuracy of ± 1pA.
  The pleasing interface enables you to work in a relaxed environment. The clear window interface and prompts make the operation simple and easy. The convenient and flexible programming allows you to adjust the process parameter settings in time according to your needs during the processing. Historical process parameters can be stored for future inspection and call.
  The actual temperature and gas nitriding furnace pressure data of the whole process are stored in the computer. After being processed by the graphics software, they are displayed on the computer screen in the form of color graphics curves, and can be printed and saved, which is of great help to analyze and improve the process.
  The following is the window interface of the historical curve of a device in our company
  This screen can query the curve of historical records, including target curve and actual curve.
Note: the red solid line on this screen is the recorded actual temperature curve, and the blue solid line is the recorded actual pressure curve.
The computer-controlled pulse ion nitriding equipment greatly improves the gas nitriding process quality and brings great convenience to users.