With the advancement of high power fiber-delivery lasers, remote laser welding becomes a reality and more and more systems have been introduced into production lines. Remote laser welding takes the advantages of less mechanical movement and better accessibility of the beam to the workpiece, thus fast processing speed can be achieved. In most cases, remote laser welding involves lap welding. Laser beam lap welding of zinc coated steel components is not a straightforward process and it requires a special procedure to provide proper venting for the zinc vapour which is generated during welding in the interface. Although there are many approaches to address this issue, many of the approaches are either impractical or too costly to apply to remote laser beam welding in production.
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