Heat Treatment

Laser heat treatment can be used for local hardening and local softening of metallic components. Fraunhofer ILT is equipped with laser beam sources from 1 to 12 kW for heat treatment. A temperature control ensures exact and reproducible results.

Our services include feasibility studies for customized applications, integration of laser heat treatment into production lines and consulting for customized machine concepts.


Our Brochures covey a quick insight to the service »Heat Treatment«. Further information and detailed project results can be found below at the »Project Results« tab.

Products and Services Heat Treatment

Process development

  • Customized solutions for laser hardening
  • Local softening of high strength sheet material and formed parts
  • Hybrid processes (e.g. cutting and softening)
  • Local heat treatment


  • Ultra high strength steels
  • Cold rolled steels
  • Non-ferrous metals

System technology

  • Consulting
  • Process installation at customer’s site
  • Cooperation with various laser and system providers


Vogt, S., Schneider, F., Weisheit, A., Flaischerowitz, M.:
Combined cutting and local heat treatment with laser radiation of ultra high strength press hardened steels
In: 5th International Conference "Hot Sheet Metal Forming of High-Performance Steel", CHS 2015
Proceedings: 31.05.-03.06.2015, Toronto (2015)
ISBN: 978-3-95735-023-7. pp. 629-637

Göttmann, A., Bailly, D., Bergweiler, G., Bambach, M., Stollenwerk, J., Hirt, G., Loosen, P.:
A novel approach for temperature control in ISF supported by laser and resistance heating
Int. J. Adv. Manuf. Technol. 67, 2195-2205 (2013)

Göttmann, A., Diettrich, J., Bergweiler, G., Bambach, M., Hirt, G., Loosen, P., Poprawe, R.:
Laser-assisted asymmetric incremental sheet forming of titanium sheet metal parts.
Prod. Eng. 5, Nr. 3, 263-271, 2011

Taleb Araghi, B., Göttmann, A., Bergweiler, G., Saeed-Akbari, A., Bültmann, J., Zettler, J., Bambach, M., Hirt, G.:
Investigation on incremental sheet forming combined with laser heating and stretch forming for the production of lightweight structures.
Key Eng. Mat. 473, 919-928, 2011

Taleb Araghi, B., Göttmann, A., Bambach, M., Hirt, G., Bergweiler, G., Diettrich, J., Steiners, M., Saeed-Akbari, A.:
Review on the development of a hybrid incremental sheet forming system for small batch sizes and individualized production.
Prod. Eng. 5, Nr. 4, 393-404, 2011

Weisheit, A., Bergweiler, G., Gebhardt, P., Wissenbach, K.:
Lokale Laserwärmebehandlung von hochfesten Stählen zur Verbesserung der Kaltumformeigenschaften.
31. EFB-Kolloquium Blechverarbeitung: Hochfeste und hybride Materialien, schnelle Umform- und Fügeverfahren. Bad Boll, 29. und 30.3.2011. Hannover: EFB 2011. ISBN 978-3-86776-363-9

Bergweiler, G., Weisheit, A., Wissenbach, K., Kelbassa, I., Kopp, C.
Improvement of formability and performance of coated ultra-high-strength steels by local heat treatment using a high power diode laser
2. International Conference on Super-High Strength Steels. October 17-20, 2010, Peschiera del Garda (Verona), Italy. Milano: Assoziazione Italiana di Metallurgia. (CD). (12 S.)

Grden, M., Sakklettibutra, J., Vollertsen, F., Johnigk, C., Emonts, M., Brecher, C., Eckert, M.
Prozessauslegung beim laserstrahlunterstützten Stanzen
Laser Technik J. 7, Nr 6, 36-41

Heyde, M., Roll, K., Kawalla, R., Bergweiler, G., Kaiser, J.
Local heat treatment of ultra-high-strength steels - an opportunity to extend the range of car body components.
Tools and Technologies for the Processing of Ultrahigh Strength Steels 2010. 50th anniversary IDDRG (International Deep-Drawing Research Group) Conference, Graz, Austria, May 31-June 02, 2010
Graz: Verl. d. Techn. Univ. (10 S.), 2010. ISBN 978-3851251081

Taleb-Araghi, B., Goettmann, A., Bambach, M., Biermann, T., Hirt, G., Weisheit, A.
Development of hybrid incremental sheet forming processes
Steel Research Int. 81, Nr 9 (special ed. 2010), No 419 (4 S.)

T. Biermann, A. Goettmann, J. Zettler, M. Bambach, A. Weisheit, G. Hirt, R. Poprawe
Hybrid laser assisted incremental sheet forming - improving formability of Ti- and Mg-based alloys
Proc. of the 5th Int. WLT Conf. on Lasers in Manufacturing 2009, Munich, June 15th-
18th, 2009. Ed. by A. Ostendorf [u.a.]
Stuttgart: AT-Fachverlag 2009
pp. 273-278

N. Pirch, K. Wissenbach
Mechanisms during laser bending
J. Laser Appl.
20, Nr 3, 135-139, 2008

Johnigk, C.
Berührungslos - präzise - steuerbar
MO Metalloberfläche
61, 24-27, 2007