Difference of induction heating machines with different frequencies
Induction heating machines are classified into four types based on their frequency: high-frequency (HF) induction heating machines, medium frequency (MF) induction heating machines, ultra-high frequency (UHF) induction heating machines, and super-audio frequency (SF) induction heating machines. They differ in terms of both frequency and application.
Different frequency ranges
- High frequency: 30 kHz-100 kHz.
- Medium frequency: 1 kHz-10 kHz.
- Ultra high frequency: 200 kHz-800 kHz.
- Super audio frequency: 20 kHz-50 kHz.
Different heating depths and uses
- The HF induction heating machine ranges between 0.5 mm and 3 mm in heating depth and is mainly used for induction hardening, workpiece surface hardening, induction brazing of copper pipes, etc.
- The MF induction heating machine can reach more than 10 mm in heating depth and is mainly used for induction melting, induction heating and forging of billets, steel bars and iron bars, and induction hardening of large auto workpieces and marine workpieces.
- The UHF induction heating machine has a relatively small heating depth of 0.3 mm-1 mm and is mainly used for induction hardening of ultra-thin and ultra-small workpieces, induction brazing of copper pipes, annealing and tempering of steel strips, etc.
- The SF induction heating machine ranges between 3 mm and 10 mm in heating depth and is mainly used for induction heating and forging of iron bars and induction hardening of large workpieces.
Depending on the power of the machine, the heating depth and heating speed of the induction heating machine will be different. Please consult our professional engineers, and we will recommend a suitable machine for you according to your workpiece material, heating time and heating depth requirements.