Closed loop control for laser micro spot welding using fast pyrometer systems

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Stehr, T.; Hermsdorf, J.; Henning, T.; Kling, R.: Closed loop control for laser micro spot welding using fast pyrometer systems. In: Physics Procedia 5 (2010), Nr. PART 2, S. 465-471. DOI:

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Sum total of downloads: 132

Laser micro spot welding offers temperature resistant high strength contacts without filler material. However, due to varying surface absorption properties of copper, the welding quality shows poor reproducibility. To stabilize the process we set up a power control for laser micro spot welding of copper. It consists of a high speed pyrometer and an external micro controller. The subject of the investigations is to apply a constant energy amount using conduction welding to increase the process stability. Using the closed loop control, the standard deviation of pull force for overlap welds is reduced from 3.3N to 1.3N.
License of this version: CC BY-NC-ND 3.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2010
Appears in Collections:An-Institute

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pos. country downloads
total perc.
1 image of flag of Germany Germany 83 62.88%
2 image of flag of United States United States 23 17.42%
3 image of flag of China China 5 3.79%
4 image of flag of France France 4 3.03%
5 image of flag of No geo information available No geo information available 2 1.52%
6 image of flag of Taiwan Taiwan 2 1.52%
7 image of flag of Israel Israel 2 1.52%
8 image of flag of Switzerland Switzerland 2 1.52%
9 image of flag of Canada Canada 2 1.52%
10 image of flag of Vietnam Vietnam 1 0.76%
    other countries 6 4.55%

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