Semi-finished products are heated in chamber furnaces until reaching temperatures between 880° and 920° C, and air enriched with methane is blown inside the furnace so that carbon can be absorbed on the surfaces of the various components.
The following oil hardening process at 850° C confers a high level of hardness and resistance to wear to the external carbon layer.
In conclusion, stress relieving is carried out at temperatures between 180° and 240° to obtain the requested final hardness and a variable depth of the cemented layer according to the time span of the blowing phase.


Ammonia is added in some cases, to obtain harder nitrides.
In conclusion, our partners developed a series of treatment cycles, tested on a regular basis, that allow reaching hardnesses and cementation depths as requested by our customers.