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Combined laser hardening and laser surface texturing forming tool 1.2379

: Aragaw, Endalkachew Mekonnen; Gärtner, Eric; Schubert, Andreas

Fulltext ()

Procedia CIRP 94 (2020), pp.914-918
ISSN: 2212-8271
Conference on Photonic Technologies (LANE) <11, 2020, Online>
Journal Article, Conference Paper, Electronic Publication
Fraunhofer IWU ()
laser hardening; laser surface texturing; tribology; forming tool 1.2379

This paper deals with the tribological performance of forming tool steel 1.2379. Laser hardening and Laser surface texturing are proposed as processes to improve this tribological performance. Hardening influences the surface hardness and wear resistance. While considering the parameter and the specific material, the correlation between heating power and material property is first modelled using FEM of the heat transfer. Based on the modelling result, the realization is performed by nanosecond laser and analyzed by SEM and by comparing the micro –hardness comparison with a reference value. Then textures are integrated into the hardened surface by picosecond laser ablation while focusing on its suitability for smooth dimples and on the examination by pin-on-disk tests for the effect of incorporating textures on the friction performance. Lower friction coefficients between tool and workpiece improve tool durability and product quality as well.