Cryoboxes are units designed to perform controlled cryogenic heat treatments using liquid nitrogen in its gaseous phase. The gas is sprayed into the chamber and, during its gasification, generates an adjustable cold atmosphere with temperatures ranging from -100 °C to -180 °C.

These treatments allow you to set temperature rise and fall ramps, adjusting times and intensities to obtain specific functional status diagrams for the treated material.

A typical application is the transformation of residual austenite into martensite, a process that gives the steel greater surface hardness and superior wear resistance.

How the Cryobox works

• It is a high-capacity thermal container, similar to a “large industrial refrigerator”.
• Inside, a cold atmosphere is generated and controlled using nitrogen gas.
• The products are immersed in a cryogenic atmosphere, without direct contact with liquid nitrogen, benefiting from uniform and gradual cooling.

Difference between Cryobox and DEWAR

• Cryobox: uses nitrogen in its gaseous phase at temperatures ranging from –100 °C to –180 °C for atmospheric treatments.
• DEWAR: this is a smaller cryogenic tank, where nitrogen is used in liquid form at a constant temperature of –196 °C, suitable for specific applications or laboratory use.