Thyristor Intermediate Frequency Induction Heating Equipment

1. Application of thyristor intermediate frequency induction heating equipment:

Mainly used in forging, casting and metal quenching and tempering industries, especially suitable for heat treatment such as heating before forging, casting smelting, steel pipe seam annealing, metal smelting, diathermy, hot forging, heat preservation, metal quenching, annealing, normalizing, tempering, etc. craft.

2. The composition of thyristor intermediate frequency induction heating equipment:

The whole set of equipment consists of thyristor intermediate frequency power supply, resonant tank circuit, induction heating coil, capacitor bank, furnace body bracket, feeding and discharging device, circulating soft water cooling system, operating table (optional), automatic control system (optional) and other parts.

3. Features of thyristor intermediate frequency induction heating equipment:

A. The complete structure design of thyristor intermediate frequency induction heating equipment:

1. Integrated design of rectifier switch cabinet and inverter output cabinet, compact structure and small volume.

2. The power factor of the power grid side is ≥0.92; for high-power power supply, 12-pulse thyristor is used for rectification, the DC voltage is high, and the harmonic current of the grid side is small.

3. The inverter bridge adopts the power unit superposition method to complete the power synthesis, which is convenient for installation and maintenance.

4. High-standard electromagnetic compatibility design, electromagnetic radiation meets national standards; airtight chassis design meets the harsh environmental requirements of users on site.

5. The form of the resonance tank is independently designed according to the actual needs of users, and the on-site layout is convenient and flexible.

B. Fully digital control system for thyristor intermediate frequency induction heating equipment

1. The three-phase rectifier is controlled by a cost-effective single-chip microcomputer to achieve precise synchronous triggering, high control precision, and small non-characteristic harmonics on the grid side.

2. The resonant inverter adopts CPLD to form an all-digital control system, which automatically fixes the angle, has high phase-locking precision and wide phase-locking range.

3. The power supply has perfect protection function, reliable operation and low failure rate.

C. Man-machine interface and fault diagnosis system of thyristor intermediate frequency induction heating equipment (optional)

1. PLC + touch screen is used to form a perfect man-machine interface system.

2. Realize the comprehensive automatic control of the power supply heating system.

3. Fault display and fault diagnosis system.