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Medium frequency high frequency induction heating equipment annealing and tempering use

Medium frequency high frequency induction heating equipment

The principle of the induction heating machine is to use a high-current high-current flow to heat the induction coil that is wound into a ring shape or a desired shape. The high-frequency 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.

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;
Induction heating equipment

Induction Heating Equipment Technology - Annealing and Tempering Applications

1. Annealing the workpiece to a suitable temperature, using different holding times according to the material and the workpiece size, and then slowly cooling (the slowest cooling rate), in order to achieve or close to the equilibrium of the internal metal structure, to obtain good process performance and Use performance or prepare for further quenching.

2. The use of induction heating instead of gas or furnace for preheating has several advantages. Thermal conduction can be carried out directly, which will minimize heat loss and energy loss, increase production efficiency and improve product quality. At the same time, the heat can be precisely controlled, which can reduce the temperature during welding and thus reduce the cooling rate. In addition, it also helps to reduce the risk of cold cracking and hardening. With induction heating, you don't have to deal with hot gas, which improves the working environment, reduces the need for heat dissipation system, and reduces the risk of fire.

  Conditions of Use

The ambient temperature is in the range of 3-40 °C; (the area below 0 °C needs to take antifreeze measures); the monthly average relative humidity of the area of ​​use is not more than 90%; there is no conductive dust around, explosive gas and can seriously damage the metal and Insulating corrosive gas.

Safe operation

Before starting the machine, first check whether the water, gas and electricity are connected. After the switch-on, the following operations can be performed;

    Operators must prepare appropriate insulated shoes, gloves, etc.

    The operator must have the appropriate electrical knowledge.

    Before the equipment is repaired, the electric brake must be pulled off to determine the disconnection of the power supply, and then the discharge treatment is carried out. Then, after the maintenance card is hung, the maintenance is repeated. If it must be energized, more than two people must be present, but high-voltage operation is never allowed.

    Before starting the machine, first make sure that the waterway is normal, and all parts of the equipment are normal before allowing the power to be turned on.

    First open a filament, and then turn on the second filament after five minutes. After five minutes, the high voltage can be sent.

    Before sending the high voltage, make sure that the output adjustment potentiometer is at the minimum position, then send the high voltage and adjust the output voltage to the working voltage.

    After confirming that there is a workpiece, press the heating button to make the device work, but never allow no-load heating.

    If there is an abnormal situation in the equipment during work, you must immediately disconnect the power supply and check the cause before working.

    After the equipment is finished, first disconnect the heating, then disconnect the high voltage, then turn off the filament and disconnect the power.

    After the equipment has stopped working, you must wait five minutes before disconnecting the water source.

    During the work of the equipment, if there is something to leave, you must do it. If the person leaves the machine, it will never be allowed. When the machine is not in use, the machine is still working.
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