Have you ever wondered how to ensure the durability and high performance of mechanical gears? Double hardening may be the answer

Double hardening is an advanced technology in the heat treatment of gears. This process significantly improves the wear resistance and toughness of the core, surpassing the limitations of traditional hardening.

What distinguishes double hardening from regular hardening?

Regular hardening involves heating the material to high temperatures, followed by rapid cooling. This process hardens the surface of the gears, but leaves the core softer and vulnerable to cyclic stress. Double hardening, on the other hand, involves two key steps:

1. First hardening cycle: similar to the traditional process, with rapid cooling to increase the surface hardness.

2. Heating to a lower temperature (tempering): reduces internal stresses and optimizes the balance between hardness and toughness.

3. Second hardening cycle: further improves the surface hardness, maintaining a strong and tough core.

Why choose double hardening?

Double hardening offers several advantages over regular hardening:

- Superior fatigue resistance: The combination of surface hardness and internal toughness allows gears to withstand vibration and cyclic stress.

- Extended life: Thanks to their increased mechanical strength, double-hardened components offer a longer service life.

- Suitable for high loads: Ideal for applications where gears must withstand intense stress, such as automotive, industrial and transmission.

When to avoid double hardening?

Despite its advantages, double hardening is not always necessary. In applications with moderate stresses or where the additional cost is not justified, regular hardening may be an appropriate choice. However, in cases where durability and reliability are essential, double hardening represents a strategic investment.

Double hardening is an advanced solution for improving gear performance, combining surface hardness with internal strength. If you are looking for long-lasting, high-performance mechanical components, this treatment is the ideal choice.

Contact us today to find out how you can optimize your gears with double hardening. GSI ruote is at your side to guarantee quality and reliability in every application.