In this work, we investigated the process of laser microwelding of electrical contacts, since there was a relatively large amount of waste from the production line due to the asymmetry of the welds. For this purpose, it was necessary to define the most influential parameters and consequently optimize the process. First, from a theoretical point of view, we separated laser welding into light absorption and material heating. We then presented the required energy balance and temperature distribution for some cases of simpler heat sources. From the theoretical basics, we then moved on to simulating heating in a finite element software environment. We used a Gaussian intensity profile and compared the obtained results with welds from the experiments. We found that regardless of the irradiation time, which in our case is in the range of milliseconds, the power distribution has a key influence.
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