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High frequency heating machine working principle and use

The induction heating device works as follows

The high-frequency and high-current flow is wound into a ring or other shape of a heating coil (usually made of a copper tube), thereby generating a strong magnetic flux whose polarity changes instantaneously in the coil, and placing the heated substance such as metal on the coil. Inside, the magnetic flux penetrates the entire heated material, and a large eddy current is generated in the opposite direction of the heating current inside the material to be heated, and Joule heat is generated by the electric resistance in the material to be heated, so that the temperature of the substance itself rises rapidly to achieve heating. Effect.

Secondly, the induction heating device is more convenient to heat and has higher heating efficiency. For example, when the other steel is subjected to the heat-transfer heat treatment, the heating rate is not fast, and the heating rate is so fast that the oxidation of the square steel during the heating process is effectively avoided. And decarburization, to ensure the heating effect of the square steel, and it can not only the overall heating of the other steel, but also local heating of the other steel, to meet the requirements of different customers.

Thirdly, the induction coil of the induction heating device can be freely replaced, which enables the same equipment to complete the heat treatment processes such as quenching, annealing, tempering, normalizing, quenching and tempering, and welding, smelting, hot assembly, and thermal disassembly. And the work of diathermy, etc., truly realizes the multi-purpose of the equipment.

Fourth, the environmental performance of induction heating equipment, the use of electricity throughout the process, compared to the traditional heating method with coal or gas, induction heating equipment does not have any pollution to the environment, so the environmental protection of induction heating equipment is worthy of recognition.



The main working principle: When the magnetic flux surrounded by the conductor loop changes, the induced potential is generated in the loop. Similarly, the conductor in the alternating magnetic field is also induced by the electromagnetic induction to form an induced potential in the conductor. Inductive current (eddy current), the induced current overcomes the resistance of the conductor itself to generate Joule heat, and the heat is used to heat the conductor itself to heat and melt it to achieve various thermal processing purposes. This is the principle of medium frequency induction heating.


The principle of the high-frequency induction heating machine is that it uses a high-current high-current current to flow into a circular induction state or a desired shape of the heating induction coil, and the high-cycle induction is usually made of a copper hollow tube. A strong magnetic flux that instantaneously changes in polarity is generated in the high-frequency induction coil, and the metal to be heat-treated is placed in the high-frequency coil, and the magnetic beam penetrates the entire heated metal object. In the opposite direction of the induction heating current inside the induction heating object, a corresponding strong eddy current is generated. Because the inductively heated metal has electrical resistance, it generates strong Joule heat energy, which causes the temperature of the object to be heated to rise rapidly, thereby achieving the purpose of heat treatment. Therefore, the high-frequency induction heating machine in the industry, can also be called: high-frequency induction heating equipment; high-intermediate frequency induction quenching equipment; induction diathermy equipment; high-frequency quenching machine, high-frequency induction heating machine, high-frequency welding machine.


Features of high frequency heating machine:

Using MOSFET, IGBT power device and variable frequency control technology, it is efficient, energy-saving and has higher output power;

With constant current and constant power control function, it greatly optimizes the heating process of metal, realizes efficient and rapid heating, and the product superiority is greatly exerted; under the same conditions, it has twice the power saving than the traditional tube high-frequency heating equipment. With 满负荷 load design, it can work 24 hours a day, can be equipped with infrared temperature measurement to achieve automatic temperature control, improve heating quality, simplify manual operation; with heating-heat preservation-cooling three-time function setting, you can get The required heating and heat preservation process is suitable for batch and repetitive heating places; it has various status indications such as overcurrent, overpressure, water shortage, phase loss and load discomfort, providing higher reliability and durability;

The power is selected according to power and frequency. The higher the frequency, the shallower the heating depth, and the lower the frequency, the better the heat permeability;

1. Easy to install, just use electricity and water to use, no need to install.

2. Easy to operate: Learn in a few minutes.

3. Start fast: heating can be started after the water is energized.

4. Less power consumption: Compared with the old electronic furnace, the high-frequency equipment saves about 30%, and the smaller the workpiece, the smaller the power consumption.

5. The effect is good: the heating is very uniform, the heating is fast, and the oxide layer is less.

6. Induction heating equipment power adjustable: adjustable output power.

7. Protection: It has over-voltage, over-current, over-heat, water shortage and other alarm indications, and automatic control and protection.


Use of high frequency heating machine

First, heat treatment: local or integral quenching, annealing, tempering, and heat transfer of various metals.

Second, thermoforming: the whole piece is forged, partially forged, hot, hot rolled.

Third, high-frequency heating machine welding: brazing of various metal products, various tool blades, saw blade sawtooth welding, steel pipe, copper pipe welding, the same kind of metal welding.

Fourth, metal melting: gold, silver, copper, iron, aluminum and other metal (vacuum) smelting, casting molding and evaporation coating.

Five, high frequency heating machine other applications: semiconductor single crystal growth, thermal matching, bottle mouth heat sealing, toothpaste skin heat sealing, powder coating, metal implanted plastic.


Dongguan Haituo Electromechanical Equipment Co., Ltd. is a manufacturer of medium and high frequency induction heating equipment developed earlier in China. It is a high-tech private enterprise specializing in R&D, design, manufacturing, sales and service. enterprise. Because of the professional, it has excellent technical research and development team, rich experience, customized automatic induction heating equipment according to the workpiece and process, free to provide customers with personalized process solutions. As well as a comprehensive after-sales service system in various parts of the country, we have won the trust of many famous domestic enterprises, and have the experience of providing quality products and services to them. Welcome to visit the company.


Haituo Electromechanical has developed and manufactured all-row induction heating equipment: high frequency heating machine, high frequency welding machine, high frequency quenching equipment, medium frequency furnace, medium frequency melting furnace, ultra high frequency induction heating machine, super audio induction heating equipment and matching Medium frequency forging furnace, automatic CNC quenching machine, chiller and related equipment, widely used in metal processing industry, such as metal preheating, high frequency welding (brazing), diathermy forming, quenching, annealing, melting, thermal Equivalent process
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