Protective atmospheres for heat treatment header

Protective atmospheres for heat treatment

Protective atmospheres for heat treatment body

What is the heat treatment role in additive manufacturing processes?

Heat treatments of components, alongside other metalworking, are classified as post-processing and are used for residual stress distensions, porosity reduction and mechanical property improvement.

Parameter optimization for additive manufacturing components is still an ongoing procedure.


Protective Atmosphere

Protective atmospheres are divided into active and neutral depending on the interaction of the gases with the material treated and can be produced on site or through the use of “synthetic” atmospheres, consisting of nitrogen, argon, hydrogen, carbon dioxide or a mix of them. SIAD, in addition to the supply of gas, creates and installs systems that allow the management of heat treatment in a protective atmosphere.

The choice of atmosphere is related to the type of material treated, to the treatment performed and to the final quality desired. The control of the quality of the atmosphere and gases used in industrial processes can take place through dedicated analysis and control panels.


Hot Isostatic Pressing (HIP)

The HIP process is used to increase the density of the components obtained by casting or metal powders with the aim of reducing the porosity of the materials and therefore increasing the mechanical properties such as resistance to fractures, fatigue and traction.

The components are heat treated at a temperature between 900 and 1400 °C in a furnace that requires high pressure gas, ranging between 1000 and 1400 barg. High purity argon is used to prevent chemical reactions that could negatively affect the quality of materials.



Pentatec is a SIAD Group company that engineers instruments and analysis systems to certify the gas quality used in industrial processes and to guarantee product traceability.