Induction Heating Equipment Classification

Induction Heating equipment can be classified into low - frequency, medium - frequency, super - audio - frequency, high - frequency, and ultra - high - frequency types according to operating frequency. Due to differences in characteristics such as heating depth and speed, the applications of equipment with different frequencies each have their own focuses:

1. Low - Frequency Induction heating equipment (about 50Hz to 1kHz)

The frequency range is usually from power frequency (50Hz) to 1kHz, with a deeper heating depth (about 10 - 20mm). It is mainly used for the overall heating, annealing, tempering, and surface quenching of large workpieces, such as the pretreatment of large mechanical parts and thick - walled pipes, using its deep - heating capability to enhance metal plasticity for subsequent processing.

2. Medium - frequency induction heating equipment (about 1kHz to 20kHz)

Typical frequencies such as 8kHz, with a heating depth of about 3 - 10mm. It is suitable for larger workpieces, such as the heating, Quenching And Tempering, surface quenching of large - diameter shafts, thick - walled pipes, and large - module gears. It can also be used for the red punching and forging of smaller - diameter bars, balancing heating quality and production efficiency.

3. Super - audio - frequency induction heating equipment (about 20kHz to 40kHz)

With a heating depth of about 2 - 3mm, it is often used for the deep heating, annealing, quenching and tempering of medium - diameter workpieces, as well as the welding, thermal assembly of larger - diameter thin - walled pipes, and the quenching of medium gears, meeting scenarios with certain requirements for heating depth and efficiency.

4. High - frequency induction heating equipment (about 40kHz to 200kHz)

With a shallower heating depth (about 1 - 2mm), fast - heating speed and high precision. It is mostly used for the deep heating, red punching, forging of small workpieces, as well as surface quenching, pipe welding and thermal assembly. Such as the quenching of small gears and the welding of electronic components, suitable for processes with high requirements for efficiency and precision.

5. Ultra - high - frequency induction heating equipment (above 200kHz, up to tens of MHz)

With an extremely shallow heating depth (about 0.1 - 1mm) and extremely fast - heating speed. It is suitable for the quenching and welding of extremely small parts or extremely thin bars, such as the quenching of the cutting edge of saw teeth and saw blades, the rapid heating of copper and aluminum parts with low carbon content, as well as the surface quenching of small workpieces.

Induction heating equipment of different frequencies controls the heating depth and speed by adjusting the current frequency, and is widely applied in industries such as metal processing, mechanical manufacturing, electronics, and automotive. From the Heat Treatment of large workpieces to the precision processing of tiny components, it meets diverse industrial needs.