Abstract
Abstract A typical problem in laser beam welding with filler wire is an insufficiently diluted melt pool leading to a non- uniform element distribution in the seam. Using low-frequency magnetic fields, the flow conditions inside the melt pool can be altered, potentially enhancing melt pool dilution. In this paper the role of the frequency and the flux density of the magnetic field are discussed on the basis of experimental results. It will be shown that the frequency is a main parameter to determine the spatial distribution of elements and hence, uniformity, whereas the flux density is the main parameter determining the overall scale of the magnetic manipulation.
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