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The use and characteristics of a new generation of intelligent induction heating equipment

The induction heating device is a three-phase power frequency alternating current, which is rectified into a direct current, and then the direct current is converted into an adjustable current, and an alternating current flowing through the capacitor and the induction coil is supplied to generate a high density in the induction coil. The magnetic lines of force and the cutting of the metal blank in the induction coil create a large eddy current in the metal blank. This eddy current also has some properties of the intermediate frequency current, that is, the free electrons of the metal itself flow in the metal body with resistance to generate heat.

For example, a metal cylinder is placed in an induction coil with alternating intermediate frequency current. The metal cylinder is not in direct contact with the induction coil. The temperature of the energized coil itself is already low, but the surface of the cylinder is heated to redness or even melt. And the speed of this redness and melting can be achieved by adjusting the frequency and current intensity. If the cylinder is placed in the center of the coil, the temperature around the cylinder is the same. The cylinder is heated and melted without generating harmful gases or strong light to pollute the environment.

Induction heating equipment is widely used in various fields such as forging, casting, heat treatment, mechanical thermal processing, powder metallurgy.

Intelligent induction heating equipment:
A new generation of intelligent induction heating equipment: digital circuit control, high temperature control precision, IGBT zero-crossing point is precisely controlled in the switching state, the main circuit resonance frequency is automatically tracked, and can automatically adapt to the load according to the change of the workpiece to ensure that the circuit is in resonance state, so that the whole induction The heating device output is extremely efficient.
Intelligent induction heating equipment has the following characteristics:
One: control core: generally adopts the world's advanced high-speed digital signal processor (HDSP), and uses a dedicated chip as an auxiliary processor.
Second: Inverter devices generally adopt high-efficiency fast resonance control mode, the inverter efficiency is greater than 95%, and the host power factor is greater than 0.9.
Three: Induction heating equipment has a design structure combining air cooling and water cooling.
Four: Control mode: All-digital high-efficiency fast resonance, can adapt to various parameters of the sensor, smart device power supply generally built-in digital PID temperature control module.
Five: Induction heating equipment has IO interface: analog output, analog input, IO output and IO input interface, RS232 or RS485 communication interface.
Six: The communication interface can be connected to a dedicated data logger.
Seven: Power adjustment adjustment mode: stepless adjustable, can be adjusted from 0% to 100%, resolution is 0.1% grade or 0.01% grade, output stability can reach 0.3% or 0.025%.
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