Posterpräsentation

Schweißtechnische Fertigungsverfahren
Institut für Werkzeugmaschinen und Fabrikbetrieb
Low Energy Input Processes
Laser Metal Deposition
Heavy Sections
Key Aspects
Welding
of Technologies
Research
Arc Welding and Welding Simulation
Laser cladding and additive manufacturing
Metallurgical weldability investigations on steel and
 Overlay welding, e.g. hardfacing of forming
tools
non-ferrous metals
 Repair, e.g. of turbine blades
 Cracking susceptibility analysis
 Generative application, e.g. modification of
injection moulds
 Welding of heat-sensitive materials, e.g. high-strength
fine-grained structural steels
Research topics:
 Welding of thick-walled components
 High-performance and low-energy arc welding processes
 Filler material matching to respective wear
stress
Simulation of welding process heat effects
 Process automation
 Temperature field for distortion and residual stress
calculation
 Implementation into existing manufacturing
chains
 Feasibility studies and economic applicability
assessment
Resistance Spot Welding
Resistance spot welding of ultra-high strength
steel and dissimilar material joints
 Improvement of the load bearing performance
as an important contribution to body-in-white
lightweight construction
 Weldability assessment of modern automotive
materials
 Computational modelling
 Distortion and residual stress optimiziation for industrial
components
Equipment
 Fully digital welding power sources of diverse
manufacturers
 MAG-narrow gap and SA-multi-wire welding facilities
 Temperature field and distortion measuring instruments
 Voltage signal analyzer, high-speed video camera
 Commercial and in-house computational software
 Powerful computer cluster
Laser Beam and Hybrid Welding
Research topics:
Research and development for safe application of
modern high-power joining processes
 Influence of imperfections on strength
 Welding of thick-walled components
 FE-simulation of the load bearing performance
 Hot cracking mechanisms during laser beam and
hybrid welding
 Microstructure characterization
 Welding system configuration analysis
Kontakt
Univ.-Prof. Dr.-Ing. Michael Rethmeier
Institut für Werkzeugmaschinen und
Fabrikbetrieb
Pascalstraße 8 - 9
10587 Berlin
Tel.: +49 (0) 30 / 8104-1550
email: michael.rethmeier@tu-berlin.de
Sensor Arrangement
 Metallurgical weldability of higher and high alloyed
steels as well as nickel base alloys
 Laser beam welding of titanium alloys and
aluminium alloys
Laser beam sources
 6 kW CO2-laser
 16 kW disc laser
 20 kW fibre laser
© WGF 2013