INDUCTION HEATING

Superior performance, controlled hardness and maximum precision

Induction hardening is one of the most effective heat treatments for increasing the surface hardness of mechanical components of any size. Thanks to the adjustable frequencies (low, medium, high), the hardening depth can be precisely adjusted, treating only the areas actually subject to wear or of specific interest.

How does the process work?

Material evaluation
The first phase is that of evaluating the material of the part, since not all of them respond correctly to tempering
Custom inductor preparation
Based on the area and geometry of the piece to be treated, a custom inductor must be created to treat the area of interest.
Tempering: heating and cooling
The process uses an inductor that generates a high-intensity electromagnetic field. When the workpiece is brought close to the inductor, the metal heats rapidly due to the induced currents. The surface reaches austenitizing temperatures within seconds. Immediate cooling transforms the surface structure, making it extremely hard. The core of the workpiece remains tough, maintaining resilience and the ability to absorb shock. The frequency used determines the depth of hardening:

- High frequency (HF): very thin surface treatment, ideal for teeth, edges, delicate surfaces.
- Medium Frequency (MF): Greater depth, perfect for shafts, pins, cams, seats and components subject to high loads.

This selective control allows for highly personalized, repeatable, and localized treatments.

The main advantages of induction hardening

High durability

The treatment intervenes exclusively on the critical areas involved, without modifying the internal structure of the component.

Increased resistance

The hardened surface becomes extremely resistant to contact, sliding and cyclic loads.

Minimal deformations

Rapid and localized heating avoids distortions typical of oven treatments.

High repeatability

The cold galvanizing process is free from thermal stress on the piece

Speed

Rapid and highly controllable process

Energy efficiency

Direct heating of the piece avoids energy waste, making the process more sustainable than traditional ovens.

What materials can it be used on?

Induction hardening requires materials capable of rapid structural transformation. The best results are achieved with:

Carbon steels (C45, C50, C55…)
Alloy steels (42CrMo4, 39NiCrMo3, 16MnCr5…)
Spheroidal cast irons and some special cast irons
Hardened and tempered steels already treated for high mass performance

It is not suitable for austenitic stainless steels or iron, which do not reach the transformations necessary for hardening.

For what specific purposes can induction hardening be useful?

Induction hardening is the ideal treatment for components subject to high wear:

camshafts and pins
pinions and gears
cams and rolling tracks
bushings and seats
rollers, slides, guides
contact or sliding surfaces

Each piece can be treated individually based on geometry and function.

GET A QUOTE >>