18 November 2003 Laser beam micro-welding of dissimilar metals
Author Affiliations +
Proceedings Volume 5063, Fourth International Symposium on Laser Precision Microfabrication; (2003) https://doi.org/10.1117/12.540557
Event: Fourth International Symposium on Laser Precision Microfabrication, 2003, Munich, Germany
The combination of dissimilar materials like brass and stainless steel is often needed in watch movements due to tribologic aspects. For mass production in automotive applications, a joining technique for alloyed copper with alloyed steel is needed. Laser beam micro welding offers an alternative to conventional joining techniques like press fit or soldering. Depending on the joining geometry, two different welding techniques are investigated: seam and spot welding. High strength and reproducibility are the main objective of joining dissimilar metals. Cracks and spillings are affected by the metallic continuity and should be avoided. Lap- and T-joints can be produced by the SHADOW-Welding technique. The length of the continuous welding seams are up to 15.7 mm at a feed rate of up to 60 m/min with a pulsed laser source. The weld width attained ranges from 50 to 250 μm and a weld depth from 20 to 150 μm. This low energy joining process with minimized heat input results in low distortion of the parts joined. Applying spot welding, the pulse forming capability is needed especially for highly reflective metals like copper. The welded joints have a higher strength than the basic material.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kilian Klages, Kilian Klages, Arnold Gillner, Arnold Gillner, Alexander M. Olowinsky, Alexander M. Olowinsky, Sandra Fronczek, Sandra Fronczek, Armin Studt, Armin Studt, "Laser beam micro-welding of dissimilar metals", Proc. SPIE 5063, Fourth International Symposium on Laser Precision Microfabrication, (18 November 2003); doi: 10.1117/12.540557; https://doi.org/10.1117/12.540557


SHADOW a new welding technique: basics and applications
Proceedings of SPIE (October 07 2004)
Out of the SHADOW watch parts in the spotlight...
Proceedings of SPIE (October 16 2003)
The influence and use of the SFR or LQS Nd...
Proceedings of SPIE (March 22 2005)
Short-pulse laser heating of metals: a new approach
Proceedings of SPIE (April 03 1997)
Laser welding of Al-Mg alloy with the thin plate
Proceedings of SPIE (January 12 2005)

Back to Top