Institute for Applied Materials – Materials Science and Engineering

Heat Treatments

Equipment

Furnaces

  • 2 vacuum furnaces
  • 1 vacuum quenching furnace (Tmax = 1350 °C)
  • 1 vacuum tube furnaces (Tmax = 1600 °C)
  • 1 salt bath furnace (Tmax = 1000 °C)
  • 1 salt bath furnace (Tmax = 750 °C)
  • 1 fluidized bed furnace (Tmax = 1100 °C), using compressed air or inert gas
  • 1 fluidized bed furnace (Tmax = 600 °C)
  • 10 muffle furnaces (up to Tmax = 1600 °C), inert gas fluidization if requested
  • 1 resistance furnace

Oil baths

  • 2 Oil baths for annealing / ageing treatments

Induction Hardening Machine

  • Compact hardening machine KHM-750 (FIAND GmbH)
  • Power:
    • MF (10-50kHz) : 400 kW
    • HF (120-500kHz): 450 kW
    • Simultaneously accessible
  • Progressive and conventional hardening of shafts and gears

Determination of input data

Short Time Austenization Device

  • Conductive or inductive heating with vheat up to 10000 K/s
  • Cooling rates upto vcool = 3000 K/s
  • Measurement of longitudinal and transversal strains
  • Integrated in a servohydraulic testing machine for measurements of the deformation state of metastable phases

Load-Quenching Dilatometer

  • Determination of the transformation plasticity constant
  • Conductive heating of cylindric specimen with 300 Ampère Transformator in nitrogen atmosphere
  • Quenching with cooled stream of nitrogen or helium
  • Measurement of longitudinal and transversal strains using a capacitive gauge
  • Pneumatic application of tensile or compressive loadings in the range of –150 up to +150 MPa at predefined temperatures

Quenching Device

  • 3-zones-furnace (up to 1200 °C)
  • Registration of the temperature during heating and cooling with 20Hz sampling rate at up to 7 different measuring points
  • Specimen cross sections up to 70x200 mm²
  • Pneumatic immersion device
  • Registration of wetting conematic using a video camera
  • Quenching reservoir: up to 100 l for different quenchants (water, quenching oils)
  • Quenching in a gas nozzle device using different gaseous quenchants