Horizontal dilatometer DIL 805A

quenching

A family of quenching dilatometers used to study the heat treatment of steel and metal alloys to identify the heating rate, the quenching rate and the isothermal dwell times necessary to yield the crystalline structure to meet the required physical properties. The DIL805 Series comprises of four models: DIL 805L, DIL 805A are quenching dilatometers, DIL 805A/D is a quenching with the capability to deform the specimen by compression, and DIL 805A/D/T that can also stretch it in tension mode. All four instruments are fully automated, self-contained units used to measure dimensional changes under extreme conditions of controlled heating and cooling. In the quenching mode the sample, solid or hollow, is inductively heated to a temperature plateau and is then cooled at an user-defined (linear or exponential) cooling rate. The phase transformation occurring in the continous cooling process or in the isothermal dwell, with or without compression/tensile stress, is indicated by the measured change in length. An array of cooling or isothermal curves represents a continous-cooling-transformation (CCT) diagram or an isothermal time-temperature-transformation (TTT) diagram, respectively. DIL 805A represents today the benchmark for determining these dimensional changes and phase transitions. Operating from -160°C up to 1500°C (in two different furnace configurations) with heating rates of up to 4000°C/s and cooling rates of 2500°C/s, can closely simulate the material response for any production or heat treatment process.