Laser-assisted turning of thermally sprayed WC-10Co-4Cr wear protection coatings
Authors: Prof. Dr.-Ing. Kirsten Bobzin, Dr.-Ing. Lidong Zhao, Dr.-Ing. Mehmet Öte, Dipl.-Ing. Thomas Frederik Linke, Prof. Dr.-Ing. Fritz Klocke, M. Eng. Stefan Gräfe, Dr.-Ing. Kristian Arntz, Dipl.-Ing. Christoph Brummer
Laser-assisted turning was evaluated as a remachining alternative to the grinding of thermally sprayed WC-10Co-4Cr wear protection coatings. In this respect, the component is heated locally in the chip-producing machining zone using laser radiation. Due to the thermally induced softening, the cutting force can be reduced considerably compared with conventional turning. The investigations into the surfaces subjected to laser-assisted turning and the comparison with ground specimens show that the corrosion behaviour is not affected by the laser-assisted turning and comparable surface qualities are achieved. Furthermore, it was possibleto observe a lower porosity in the peripheral zone of the specimens subjected to laser-assisted turning than in the peripheral zone of ground specimens as well as an increase in the microhardness
Pages: 43 - 49
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