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