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The production of induction coils for high-frequency induction heating equipment

Release time:

2024-01-25

High frequency induction heating, also known as high-frequency electromagnetic induction heating, or simply induction heating, is a method of heating conductor materials such as metal materials.

High frequency induction heating, also known as high-frequency electromagnetic induction heating, or simply induction heating, is a method of heating conductor materials such as metal materials. It is mainly used for metal hot processing, heat treatment, welding, and melting. As the name suggests, induction heating is the use of electromagnetic field induction to generate electric current inside the heated object or material, forming magnetic field eddy currents! Relying on the energy of these eddy currents to achieve the purpose of heating the heated body. The basic components of a high-frequency induction heating system include an induction heating power supply, also known as an AC power supply, an extension transformer, an induction coil, and the heated object, which we usually refer to as the workpiece. Depending on the object being heated, the coil can be made into different shapes. The coil is connected to a power supply and transformer, and the power supply provides alternating current to the coil. The alternating current flowing through the coil generates an alternating magnetic field passing through the workpiece, which generates eddy currents to heat the workpiece.
Induction heating includes high-frequency and intermediate frequency heating principles. Induction heating surface quenching is a quenching method that utilizes the principle of electromagnetic induction magnetic field effect to generate a high-density induction current on the surface layer of the workpiece, rapidly heating it to the austenite state, and then rapidly cooling it to obtain martensitic structure. When a certain frequency of alternating current passes through the high-frequency heating induction coil, an alternating magnetic field with the same frequency as the current change will be generated inside and outside. When a metal workpiece is placed inside an induction coil, under the action of a magnetic field, an induced current with the same frequency but opposite direction will be generated inside the workpiece.
Due to the induction current forming a closed circuit along the surface of the workpiece, it is commonly referred to as eddy current. This eddy current converts electrical energy into thermal energy, rapidly heating the surface of the workpiece. Eddy currents are mainly distributed on the surface of the workpiece, and there is almost no current passing through the interior of the workpiece. This phenomenon is called surface effect or skin effect. Induction heating is the rapid heating of the workpiece surface to the quenching temperature using the skin effect and the current thermal effect. The induction coil is made of copper tube with cooling water inside. When the surface of the workpiece is heated to a certain temperature within the induction ring, it is immediately cooled by water spraying to obtain martensitic structure on the surface layer.

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The heat treatment equipment for the wire rolling wheel is selected as a high-frequency furnace

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The heat treatment equipment for the wire rolling wheel is selected as a high-frequency furnace