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Laser robot welding system fixes microcracks in turbines.(PROCESS TECHNOLOGY)

Advanced Materials & Processes,  February, 2007  

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A laser welding robot system that can quickly and accurately repair a damaged aircraft turbine blade or a worn injection mold has reportedly been developed at the Fraunhofer Institute for Material and Beam Technology, Germany. To begin the process, a flexible robot arm accurately focuses the laser beam on the damaged section of the component.

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The energy from the laser beam causes the surface to melt as the laser scans the area dot by dot, producing microscopic puddles no wider than a few tenths of a millimeter each. At the same time, powder is blown onto the surface by a stream of ...

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