Research field Beam and special Joining Processes
The beam and special processes working group focuses on laser beam technology, diffusion-based joining processes, microfabrication and the joining of special materials.
Keywords:- Laser welding
- Surface modification by laser
- Diffusion welding and bonding
- Ultrasonic welding
- Soldering and brazing processes
- forming joining processes (clinching, riveting)
- microjoining technology
- Characterisation of joints
Contact: Dipl.-Ing. Holger Letsch
Joining Equipment:
- NdYAG-Laser, 2,5 kW
- Fibre laser, 1 kW
- Diode laser, 4 kW
- NdYAG-Laser, pulsed-mode, 120 W
- Ultrasonic welding unit, 35 kHz
- Diffusion welding unit, 80 MPa, 1000°C
- Induction soldering/brazing unit, bis 50 kW
- vacuum brazing furnace, up to 1300°C
- Clinching units, up to 130 kN
Manipulator systems:
- 5-axis-CNC-units with linear actuator
- Various direct and scanner optics
- Partially mechanised workplace with microscope view
- 6-axis-robots
- mechanised cold wire feeding systems
- Micro wire-feed systems
- mechanised powder feeding systems
Measurement Equipment:
- Laser beam diagnostics (beam power, beam properties)
- High-Speed-Video-Systems up to 100.000 B/s
- Measurement instruments for force and distance
- Scanner/digitizer for geometry capture and path planning
- 3-D-Laser profil sensor
- Thermography by using a thermocamera and pyrometer
Services for the Industry:
- Joining tests
- Process parameterisation/Parametric studies
- Development of joining strategies
- Design of joining devices and handling systems
- Support with component construction/joint design
- Manufacturing of prototypes/sample assemblies
- Characterisation of joints