## Monday, March 11, 2024

HOW TO MAKE INDUCTION HEATING, CONTACTLESS HEATING WITH MAGNETIC FIELD

Induction heating systems work on the principle that electric current formed on metallic material placed in a strong electromagnetic field, releases heat due to the internal resistance of the material. Discovered by Michael Faraday, induction begins with a coil made of conductive material (like copper). The current flowing through the coil creates a magnetic field in and around the coil. The ability of the magnetic field to operate depends on the design of the coil and the amount of current flowing through the coil.

The direction of the magnetic field depends on the direction of the current flow, so the alternating current passing through the coil will cause the direction of the magnetic field to change at the same rate as the frequency of the alternating current. The alternating current of 60 Hz causes the magnetic field To change direction 60 times in a second, the 400 khz alternating current causes the magnetic field to change at the same rate as the frequency of the alternating current. It makes it change direction 400,000 times per second.

When a piece of conductive material is placed in a changing magnetic field, it induces a voltage in the part. With the induced voltage, it leads to the flow of electrons, i.e. current. The current flowing through the part is in the opposite direction to the current in the coil. This means we can control the current in the part by controlling the frequency of the current in the coil.

When current passes through a material, resistance is created against the movement of electrons. This resistance manifests itself in the form of heat. Materials that are more resistant to electron flow will generate higher heat when current passes through them.

In induction heated products, heat transfer to the product surface does not occur through convection and radiation mechanisms. Instead, heat is generated on the surface of the product due to the current passing through it. Then, the heat generated on the product surface is transferred into the product through thermal conduction. The depth to which the heat generated by the directly induced current will reach depends on the reference depth.

HOW TO MAKE INDUCTION HEATING, CONTACTLESS HEATING WITH MAGNETIC FIELD

Induction heating systems work on the principle that electric current formed on metallic material placed in a strong electromagnetic field, releases heat due to the internal resistance of the material. Discovered by Michael Faraday, induction begins with a coil made of conductive material (like copper). The current flowing through the coil creates a magnetic field in and around the coil. The ability of the magnetic field to operate depends on the design of the coil and the amount of current flowing through the coil.

The direction of the magnetic field depends on the direction of the current flow, so the alternating current passing through the coil will cause the direction of the magnetic field to change at the same rate as the frequency of the alternating current. The alternating current of 60 Hz causes the magnetic field To change direction 60 times in a second, the 400 khz alternating current causes the magnetic field to change at the same rate as the frequency of the alternating current. It makes it change direction 400,000 times per second.

When a piece of conductive material is placed in a changing magnetic field, it induces a voltage in the part. With the induced voltage, it leads to the flow of electrons, i.e. current. The current flowing through the part is in the opposite direction to the current in the coil. This means we can control the current in the part by controlling the frequency of the current in the coil.

When current passes through a material, resistance is created against the movement of electrons. This resistance manifests itself in the form of heat. Materials that are more resistant to electron flow will generate higher heat when current passes through them.

In induction heated products, heat transfer to the product surface does not occur through convection and radiation mechanisms. Instead, heat is generated on the surface of the product due to the current passing through it. Then, the heat generated on the product surface is transferred into the product through thermal conduction. The depth to which the heat generated by the directly induced current will reach depends on the reference depth.