What are the advantages of induction hardening? What are the types of induction hardening?

Induction hardening is a relatively advanced quenching method. It not only has the advantages of fast heating speed and low energy consumption, but most importantly, it can also improve the service life of parts.


Quenching is an indispensable process in metal smelting. But now there are many improvements in the quenching method, such as induction hardening, which is a very advanced quenching method. So, what are the advantages of induction hardening, and what are the types of induction hardening?

What are the advantages of induction hardening?
1. The heat source is on the surface layer of the product workpiece, and the heating speed is fast and the heat efficiency is high.
2. The product workpiece is not heated as a whole, and the bending deformation is small.
3. The heating time of the product workpiece is short, the speed is fast, and the surface oxidative decarburization is small.
4. The surface hardness of the product workpiece is high, the notch sensitivity is small, and the impact toughness, fatigue strength and wear resistance are greatly improved. This is beneficial to the potential of materials, saving material consumption and increasing the service life of parts.
5. The machine is compact, easy to operate and has good working conditions.
6. Facilitate mechanical automation and automation control.
7. Not only used for surface quenching but also for penetration heating and chemical heat treatment.


What are the types of induction hardening?
Induction hardening types are divided into: power frequency, low frequency, intermediate frequency, super audio, high frequency, ultra high frequency, and the applicable frequency is selected according to the need of hardening depth. The greater the depth of the hardened layer, the lower the required frequency, and vice versa. Induction hardening is mainly based on intermediate frequency, super audio, high frequency and ultra high frequency. The intermediate frequency is generally a thyristor. At present, the domestic IGBT induction power supply is used for the intermediate frequency, which is more energy-efficient than the thyristor, but the price is higher than that of the thyristor. Relatively speaking, IGBT is a development trend, because its conversion efficiency is high, and its performance is stable, and the internal soft switching is not easy to malfunction. Super audio and high frequency are IGBT induction power supplies. At present, domestic IGBT induction power supply has experienced three generations. According to the excellent energy-saving understanding, the first generation is a distinctive feature for narrow-frequency multi-boards. The second generation is a wide frequency range with a single motherboard as the main feature. In the third generation, revolutionary changes have been made from the technical structure to achieve digital control, which can transmit and store energy monitoring data, facilitating standardized management.


Haituo Electromechanical has developed and manufactured all-row induction heating equipment: high frequency heating machine, high frequency welding machine, high frequency quenching equipment, medium frequency furnace, medium frequency melting furnace, ultra high frequency induction heating machine, super audio induction heating equipment and matching Medium frequency diathermy forging furnace, CNC quenching machine, chiller and related equipment, widely used in metal processing industry, such as metal preheating, high frequency welding (brazing), diathermy forming, quenching, annealing, melting, thermal Equivalent process