inhert gas hardening

HARDENING

Inert gas hardening

During inert gas hardening, the metallic component is brought to the hardening temperature in an inert gas atmosphere and then rapidly cooled in an oil bath. As a rule, low-alloy materials are refined in this way.

The hardening process for high-performance components

Inert gas hardening is used to give steel tools a significantly higher hardness and better mechanical properties. 

 

 Low-alloy materials and carbon steels are not suitable for vacuum hardening due to the cooling dynamics. This is where protective gas hardening, in which the component is quenched with oil, comes into play. As oil quenching is much harsher than cooling with gas, a higher distortion is to be expected.

After the professional charging assembly has been transferred to the system, it automatically moves into the hardening furnace. As the furnace chamber is under a protective gas atmosphere, no scaling occurs. Which process gas is used depends on the component in question. The surface can easily oxidise during the subsequent quenching in an oil bath.

A subsequent tempering treatment allows us to precisely adjust the desired component properties. This significantly increases the service life and durability of your products. Inert gas hardening is not suitable for components with sharp edges or large differences in cross-section. The process offers maximum reproducibility.

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For the preparation of your individual offer

we need the following information from you:

 

 

  • Material
  • Weight and quantity
  • Desired hardness with tolerance range
    As a rule, this is ± 2 HRC, for limited qualities ± 1 HRC.
  • Special requirements such as repeated tempering or straightening
  • Additional machining requirements such as eroding or coating
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