Induction heating equipment uses electromagnetic induction to provide fast, localized heating of metal workpieces for processes such as induction hardening, tempering, annealing, and preheating. An induction coil generates eddy currents within the workpiece, rapidly heating the selected area and allowing precise control of the heating location, depth, and time.

A typical system includes an induction power supply, induction coil, workholding and scanning mechanism, quenching system, cooling system, and control system. The equipment can be configured according to the workpiece size, material, required hardening area, and production cycle.

For ball screws, planetary roller screws, shafts, and other precision transmission components, induction heating can be used for localized treatment of threads, raceways, and shaft surfaces.

This localized induction heat treatment can increase surface hardness, wear resistance, and contact fatigue resistance while helping retain toughness in the core. This makes it suitable for components that require a hardened working surface without sacrificing core toughness.