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Super Audio Frequency Induction Heater: Introduction, Working Principle and Applications

Super Audio Frequency Induction Heater, also known as SAIF, is an advanced heating technology that has become increasingly popular in recent years. It is a type of induction heating machine that operates at high frequencies between 10 kHz and 50 kHz, which is higher than the conventional induction heating frequency of 50 Hz or 60 Hz. This article will introduce you to the working principle of SAIF and its applications in various industries.

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Working Principle

The SAIF heating device consists of an induction coil, a power source, and a workpiece. The power source generates a high-frequency alternating current (AC) that flows through the induction coil. As a result, a magnetic field is created around the coil, which induces eddy currents in the workpiece. The eddy currents generate heat due to the resistance of the workpiece material, which leads to rapid and efficient heating.

The SAIF heating machine uses a super audio frequency range, which allows for more precise and uniform heating. The high frequency also reduces the skin effect, which is the tendency of current to concentrate near the surface of the workpiece. As a result, the SAIF heating device can heat thicker materials more uniformly than traditional induction heating.


The SAIF heating machine is widely used in various industries, including automotive, aerospace, electronics, and medical. It is suitable for heating a wide range of materials, including metals, plastics, ceramics, and composites. Some of the common applications of SAIF heating include:

1. Hardening and tempering of metals: SAIF heating is used to harden and temper metals, such as steel, to improve their strength and durability.

2. Welding and brazing: SAIF heating is used for welding and brazing of metals, plastics, and ceramics.

3. Annealing and stress relieving: SAIF heating is used for annealing and stress relieving of metals, which helps to improve their ductility and reduce internal stresses.

4. Induction cooking: SAIF heating is used in induction cooking appliances, such as induction cooktops, to cook food more efficiently and safely.


Super Audio Frequency Induction Heater is a powerful and efficient heating technology that has revolutionized various industries. Its high-frequency range and precise heating capabilities make it suitable for a wide range of applications, from hardening and tempering of metals to induction cooking. The SAIF heating device offers many advantages over traditional heating methods, including faster heating, more uniform heating, and reduced energy consumption. As a result, it has become an essential tool in modern manufacturing and processing industries.