HEAT TREATING UNDER CONTROLLED ATMOSPHERE

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.

HARDENING AND TEMPERING MEDIUM AND HIGH-ALLOY STEELS

HARDENING OF STEELS FOR DIES – HARDENING OF MARTENSITIC STAINLESS STEELS

PRECIPITATION HARDENING OF STEEL TREATMENT

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.

WITH THE ADVANTAGE OF:

  • obtaining high harnesses of the surfaces , which may improve wear resistance
  • having the material tough and fatigue resistant at the core,
  • increasing the capacity of the surfaces to resist high intensity pressures
  • having the gas treatment gas , which ensures clean surface appearance without any residues

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NORMALIZATIONS

Heating of the steel up to the Austenitization temperature and then followed by cooling in still or moving air.

WITH THE ADVANTAGE OF:

  • refining the grain and create uniformity
  • preparing the steel for the subsequent heat treatments with a greater restriction of deformations

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ANNEALINGS

The heating of a steel to a given phase transformation temperature and a subsequent slow cooling.

WITH THE ADVANTAGE OF:

  • increasing workability
  • eliminating residual stresses given by previous processes, plastic deformation and welding
  • decreasing the hardness of your pieces
  • making the mettalographic structure uniform

SOLUBILIZATIONS

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.

WITH THE ADVANTAGE OF:

  • improving workability
  • increasing corrosion resistance

RECRYSTALLIZATIONS

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.

WITH THE ADVANTAGE OF:

  • lowering the hardness of your pieces in order to improve their workability
  • recovering the qualities of plasticity that are useful for the subsequent workings.
  • recovering the original characteristics of your pieces

HIGH PERFORMANCE HEAT-TREATMENTS

Hardening treatment followed by high-temperature tempering.

WITH THE ADVANTAGE OF:

  • obtaining the desired mechanical resistance, according to the utilization specifications
  • preparing your pieces for the subsequent surface thermochemical treatments

WORKABILITY HEAT-TREATMENTS

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.

WITH THE ADVANTAGE OF:

  • increasing workability
  • improving machinability
  • refining and homogenizing the metallurgical structure