Fields of work
Simulation
- Modeling of the arc column and the drop zone, taking metal vapor influence, radiation transport and external magnetic fields into account
- Modeling of the material transition and weld pool dynamics
- Torch optimization with regard to shielding gas coverage and thermal load
- Simulation of fumes emitted during welding and their extraction
- Calculation of joint geometry and penetration profile
Diagnostics
- High-resolution process variable analysis in the MHz range
- Time-synchronized high-speed cinematography of up to 500,000 FPS
- Flow visualization (PIV, Schlieren technique)
- Determination of energy density and arc pressure
- Spatially resolved measurements of the oxygen concentration in the area immediately surrounding the workpiece
- Measurement of welding fume emissions
Application
- Torch development (incl. cathode-focused TIG torch and plasma-laser hybrid welding head with coaxial beam guidance)
- Development of high-performance processes (including tandem GMAW, plasma and TIG keyhole welding, high-speed arc brazing)
- Analyses for magnetic arc deflection
- Welding tests in all positions and material analysis
Technical equipment
- Computer cluster (40 computing nodes, 172 GB RAM, 10 TB RAID 5)
- Photron SA4 high-speed camera
- Cavilux 500HF pulsed diode laser light source
- DEWETRON measuring system (1 MHz sampling rate)
- TIG, plasma, gas metal arc welding (GMAW) and tandem GMAW power sources
- Cold and hot wire feed
- 6-axis industrial welding robots, rotating mechanisms, linear axes
- Scanning election microscope (SEM), energy-dispersive X-ray (EDX), reflected and transmitted light microscopy, hardness testing, static and dynamic test methods