By Heat Treatments under controlled atmosphere we mean those treatments that accurately and repeatedly ensure the requested metallurgical and mechanical characteristics to be achieved. Due to the fact that heat treatments are carried out in a fully automated plants with computerized management systems we are able to control every single stage of the process, combining high productivity with absolute repeatability of processes by means of sophisticated internal algorithms.
Heating of steel at the austenitization temperature for a period of time that is sufficient to achieve homogeneity and structural balance. The thermal tempering treatment involves a subsequent cooling phase with a speed higher than the critical quenching one. The cooling modalities also characterize every tempering treatment, as a matter of fact the components take on various structural characteristics according to the different low temperatures.
Heating of the steel up to the Austenitization temperature and then followed by cooling in still or moving air.
The heating of a steel to a given phase transformation temperature and a subsequent slow cooling.
Preliminary heat treatment for natural and ferritic stainless or austenitic steels. This aims at solubilizing the carbides through heating at a specific temperature and a sufficiently long dwell time to remove the structural alterations.
When a metal undergoes a cold deformation, its structure is oriented according to the directional components of the deformation. Its hardness increases and its ability to undergo further deformation decreases; in order to continue with cold working it is necessary to make use of recrystallization, which is able to restore the original structure and qualities of plasticity.
Hardening treatment followed by high-temperature tempering.
Hardening treatment followed by high-temperature tempering. This treatment makes it possible in addition to the characteristics offered by the annealing, to provide reduced deformation in the subsequent treatments as it is able to confer a martensitic structure followed by tempering below AC1, better structural refinement and homogenization.