Laser welding plays an important role not only in sheet metal processing, but also in the research work carried out at the LZH. Highlights at the fair EuroBLECH include laser welding of 23 mm thick metal sheets for ship building or pipeline construction, or how lasers can be used for welding a three meter long ship rudder made of steel-aluminum sandwich plates, cutting the weight of the rudder in half.
At the EuroBLECH fair, the LZH will be showing how laser welding can be used for weight reduction in shipbuilding (Hall 11, Stand H 08). The ship rudder in the photo is made of laser welded steel-aluminum sandwich plates (see cross-section).
Even if laser cutting has been well established for several years, there are always new challenges. The LZH will be showing that lasers can be used to economically cu many different materials (e.g. alloys and non-ferrous metals) and different material thicknesses.
Laser surface treatment is interesting for rapid prototyping, for generating small structures (laser sintering) with a resolution of only 30 µm. The LZH will also be showing how laser deposition welding and repair welding can help reduce costs, for example for repairing so-called blisks (a turbine or engine component consisting of a single element combining the rotor disk and the blades).
Michael Botts | Laser Zentrum Hannover e.V.
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