Induction Hardening Machine for Gear Hardening Process

An induction hardening machine is best used for gear hardening when a gear requires a hard wear-resistant tooth surface while maintaining a tough core and minimizing distortion. Depending on gear size and hardening pattern, the process may use spin hardening, single-shot hardening, contour hardening or tooth-by-tooth induction hardening. Typical case depth ranges from 0.8mm to 6mm, and suitable steels can often reach HRC 50–62 after proper quenching and tempering. High frequency is used for shallow tooth surface hardening, while medium or superaudio frequency is selected for deeper tooth flank and root hardening.