The Laser Zentrum Hannover e.V. (LZH), together with Held Systems Deutschland GmbH, Laserline GmbH and Meyer Werft GmbH & Co. KG, is working on establishing robust, pure laser welding processes for steel sheet thicknesses of up to 30 mm (1.18 in.) as an alternative to SAW. For this purpose, in the joint project titled "Thick Metal Sheet Welding by High-Power Diode Lasers for Maritime Applications" (DIOMAR), diode laser beam sources are to be brought to peak performance, specifically for thick sheet metal welding in the maritime sector.

Project partner Laserline will realize new diode laser beam sources with a maximum output power of up to 60 kW in CW mode. The aim of the project is to achieve high-quality joints with high welding speeds. The partners want to reduce the costs for edge preparation and the amount of additional material compared to existing joining methods.

The application-oriented development is taking place in parallel in a laser laboratory and in a shipyard-like test environment so that processes can be tested, evaluated, and optimized quickly.

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