DIL805 A/D/T Quenching Dilatometer

The DIL805 A/D/T Quenching Dilatometer is a dilatometer capable of operating in a number of modes. Quenching, compression, tension, alpha and sub-zero alpha modes all provide highly accurate dimensional change measurements under different conditions and environments.

The quenching mode is the most commonly used in this system where we have the capability of heating samples up at ~1000°C/s and obtaining quench rates ~400°C/s (sample dependent). Using an induction coil to provide accurate heating to samples under vacuum or in an inert atmosphere (Argon, Helium or Nitrogen). Samples are usually 4mm diameter and 10mm in length, although alternative sample geometries can be utilised. This mode is often used to generate continuous-cooling-transformation (CCT) or isothermal time-temperature-transformation (TTT) diagrams.

We are able to deform samples in compression using loads up to 20kN, speeds up to 200mm/s and multiple hit deformations also possible. Heating and cooling rates are reduced in this mode to a maximum of 100°C/s. In tension mode samples can be loaded up to 10kN at speeds up to 25mm/s although heating and cooling rates are further reduced to a maximum of 25°C/s. Various sample sizes and geometries can be accommodated for each mode.

Both the alpha and sub-zero alpha modes allow higher precision dimensional changes to be monitored throughout the temperature range. The sub-zero mode utilises helium gas cooled using liquid nitrogen to allow samples to be tested down to temperatures of -150°C.