High speed Quenching and Deformation Dilatometer – TTT- CCT- CHT – Diagram
The Quenching/Deformation DilatometerL78 RITA is especially suitable for the determination of TTT, CHT and CCT diagrams. The special induction furnace enables heating and cooling speeds in excess of2500°C/s. The system complies with ASTM A1033.
This practice is based upon the principle that, during heating and cooling of steels, dimensional changes occur as a result of both thermal expansions associated with temperature change and phase transformation. In this practice, sensitive high-speed quenching dilatometer equipment is used to detect and measure the changes in dimension that occur as functions of both time and temperature during defined thermal cycles. The resulting data are converted to discrete values of strain for specific values of time and temperature during the thermal cycle. Strain as a function of time or temperature, or both, can then be used to determine the beginning and completion of one or more phase transformations.
Main advantaged of the L78 RITA Quenching Dilatometer system:
The instrument can perform measurements under vacuum, inert, oxidized, reduced atmospheres from 150 (low temperature option) up to 1000°C and room temperature up to 1600°C in one run.
The unique heating and cooling arrangement enable very fast controlled heat up and cool down speeds of up to 2500°C/s.
With the optional susceptor non metallic samples can me analyzed.
This special Quenching dilatometer is especially esigned for the determination of continuous cooling / heat up CHT, CCT and isotherm TTT- diagrams.
The LINSEIS L78 Quenching Dilatometer is especially designed to perform these demanding rapid expansion measurements. The high speed data acquisition and controlling unit, unique gas quenching setup and precise temperature measurement arrangement are only some of the outstanding features of this instrument.
The main application field for the LINSEIS L76 Dilatometer series is the CTE measurement of ceramics, brick, tile, porcelain and building materials. Furthermore it is widely used for quality control purposes in ceramics and in metal industries.
Thanks to the fact we started to develop and build Dilatometers in the year 1955,this instrument is very reliable and covers a wide temperature range from RT up to 1000°C, 1400°C and 1600°C with user exchangeable furnaces. It consists of measurement systems made out of quartz glass (up to 1100°C) and Al2O3 (up to 1600°C). The sensor is a highest precision LVDT (linear variable differential transformer), which has an indefinite resolution. Together with the 32 Bit software package LINSEIS WIN-TA / WIN-DIL, the Dilatometer provides an excellent solution for standard quality control type CTE measurements.
The following physical properties can be measured:
CTE, Linear Thermal Expansion, Alpha Physical, Sintering Temperature, Phase Transformations, Softening Points, Decomposition Temperatures, Glass Transition Temperatures
Glass transition and softening point evaluation
Softening point detection with automatic software controlled system shut down
Display of relative/absolute shrinkage or expansion curves
Presentation and calculation of technical / physical expansion coefficient