For Induction Heating, the fixed power refers to the constant power provided by the heating device, which does not change with the thickness of the heated object. However, the actual heating power may vary due to the characteristics and thickness variations of different materials.

When you put caps of different thicknesses, the reasons for the difference in actual heating power may include the following:

Thermal conductivity: Different materials have different thermal conductivity, and increasing the thickness of cap may result in a decrease in thermal conduction capacity, slowing down the propagation of heat within the material, thereby affecting the heating speed and effectiveness.

Permeability: The permeability of the cap also affects the heating effect. The higher the permeability, the better the material responds to the electromagnetic field, allowing the magnetic field to penetrate the material more effectively and generate heating effects. Therefore, thicker iron plates with higher permeability may exhibit higher heating power.

Heat capacity: caps of different thicknesses have different heat capacities. Thicker plates require more heat to raise their temperature, and therefore may take longer to reach the same temperature. Thus, even though the induction heating provides the same power, thicker iron plates may require a longer heating time to achieve the same temperature.

Although the power of induction heating is fixed, the actual heating power is influenced by factors such as thermal conductivity, permeability, and heat capacity of the material. This leads to different heating effects for caps of different thicknesses.

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