Saturday, October 30, 2010

Seminar: 11.5.10 / CREOL 102 / 4-5pm / “Additive manufacturing, repair and salvage of turbo machinery components by Laser Metal Deposition”, Dr. Kelba

Seminar: “Additive manufacturing, repair and salvage of turbo
machinery components by Laser Metal Deposition”, Dr. Kelbassa
Friday, November 5, 2010 / 4:00-5:00pm

Akad. Oberrat Dr.-Ing. Ingomar Kelbassa
Vice and Academic Director, Lehrstuhl fuer Lasertechnik, RWTH Aachen

Turbo machinery components such as blade integrated disks (BLISKs) and
nozzle guide vanes (NGVs) made from Nickel and Titanium base alloys such
as Inconel 718, Ti-6Al-4V, Ti-6246, Ti-17, Mar-M247 and CMSX-4 are
predestinated for repair and salvage operations due to their high value.
Currently these components are manufactured by time and cost intensive
process chains containing processing steps such as casting, forging,
milling, linear friction welding, thermal spraying etc.

The laser additive manufacturing process Laser Metal Deposition (LMD)
offers new effective entire process chains by decreasing the number of
processing steps as well as by enabling emerging applications for
specific process steps. Parts can be repaired which were formally
classified as non-repairable and components can be manufactured
additively by new process chain designs and new processes.

This talk addresses the pathways from feasibility studies over process
developments yielding in certified processes and industrially
implemented machines. For BLISK manufacturing the single blades are
directly manufactured additively on the disk by LMD. The significant
increase of the deposition rate combined with a near-net-shape
deposition is realized by the use of up to 10 kW laser power and the
first application of a newly-designed LMD head with an integrated
zoom-optics. The achievable metallurgical, mechanical - static and
dynamic mechanical properties - and geometrical results, the implemented
process chains including CAD/CAM/NC-coupling are presented and

Akad. Oberrat Dr.-Ing. Ingomar Kelbassa has studied mechanical
engineering at RWTH Aachen University and has been working in the field
of Laser Materials Processing at Fraunhofer ILT and Lehrstuhl fuer
Lasertechnik (LLT), RWTH Aachen University, since 2000. His experience
gained is shown by approx. 50 scientific publications. Since mid 2006
Ingomar Kelbassa is Vice and Academic director of LLT as well as he is
involved in the acquisition of large-scale projects at Fraunhofer ILT.

For More Information:
Dr. Ilya Mingareev
Townes Laser Institute, CREOL
Phone: 1 (407) 823 6042

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