Zhengzhou Gou's analysis of GP and CYP high frequency induction heating power supplies

What is GP type high frequency induction heating power supply?

High-frequency induction heating power supply was called high-frequency electric furnace in the early days. The earlier used model was the vacuum tube type 3-60 imported from the Soviet Union. 60 means the output power is 60kW. Now the old models of domestic high-frequency induction heating equipment are represented by GP60-CR3. GP means high-frequency induction heating equipment, 60 means the output power is 60kW, C means quenching, R means melting, and the last letter is the serial number of the model; the new model is Represented by GGC-50-2, GG represents high-frequency induction equipment, c represents quenching, 50 represents the output power value of 50kW, and 2 represents the frequency of 200-250kHz.

High-frequency induction heating power supply has both industrial frequency and high voltage, DC high voltage and high frequency and high voltage, so special attention should be paid to safety during use and operation. Now there are both old and new models in the company. The early rectifier parts that used thyristors have been changed to high-voltage silicon stack rectifiers. The DC high voltage is output to the vacuum tube oscillator, which generates high-frequency current through the step-down transformer to the inductor and heats the workpiece.

There are two ways to adjust the output power of vacuum tube high-frequency induction heating power supply:

1) Adjust the anode voltage of the triode to change the output power.

2) Perform matching adjustment, that is, adjust the ratio of anode current to gate current so that the oscillator works in a critical or slightly overvoltage state. At this time, a larger power output can be obtained under a certain anode voltage.

What is CYP super audio induction heating power supply?

CYP ultra-audio power supply refers to a vacuum tube induction heating power supply with a frequency in the range of 20-100kHz. Because the audio frequency is 20kHz, and because frequencies greater than 10OkHz have entered the high-frequency band, frequencies greater than 20kHz and 10OkHz are called super audio frequencies.

The current depth of super audio frequency is more suitable for the hardened layer depth of general parts (1.5 -2.Omm), and the hardened layer of gears with centering module m=4mm is better than the hardened layer of high-frequency power supply. The rated frequency of the super audio power supply used in Russia is 66kHz, and the frequency currently produced in China is 30 - 50kHz. The old model of super audio power supply is named after CYP100 -0. 035 - C. CYP means super audio induction heating equipment, and 100 means the output power is lOOkW, 0.035 means the frequency is 35kHz. The naming of new models of super audio power supplies, such as GGC150-0.3, GGC means induction heating quenching, 150 means the output power is 150kW, and 0.3 means the frequency is 30 -40kHz.

In terms of the oscillation circuit diagram, the super audio power supply is similar to the high-frequency induction heating power supply, except that the frequency is higher and the frequency is lower, and the capacitance is larger.