Laser welding processes
As well as allowing 3D welding, this technique can also be used to weld large 2D areas. In 2D welding applications, there is also demand for linear welds with broader welding seams. This can be accommodated using the roller welding technique.
Special optical components known as diffractive optical elements (DOE) can be tailored to the specific laser weld-ing process. These optical units are used with various techniques, from contour and quasi-simultaneous welding right through to simultaneous welding. They change the shape of a spot laser beam in order to produce a power density distribution that is suitable for the application concerned.