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Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials
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| Veröffentlicht in: | Physics procedia 83(2016), Seite 135-146 |
|---|---|
| Personen und Körperschaften: | , , , , , |
| Titel: | Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials/ Christian Daniel, Jannik Manderla, Sina Hallmann, Claus Emmelmann |
| Format: | E-Book-Kapitel |
| Sprache: | Englisch |
| veröffentlicht: |
2016
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| Gesamtaufnahme: |
: Physics procedia, 83(2016), Seite 135-146
, volume:83 |
| Schlagwörter: | |
| Quelle: | Verbunddaten SWB Lizenzfreie Online-Ressourcen |
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| 520 | |a Innovative chip breakers for cutting tools made of very hard materials require laser ablation and demand a high quality regarding the manufactured surface. When processing materials such as polycrystalline cubic boron-nitride or tungsten carbide the surface roughness by laser ablation reaches Sa= 1,0-2,9 μm compared to Sa= 0,42 μm achieved by grinding. Therefore in the presented research the influence of the hatching exposure strategy on surface roughness during picosecond laser ablation of tungsten carbide is examined. The areal, layerwise ablation process is separated into its elements which are represented by intersection zones between single and multiple laser vectors. Thus two mechanisms of roughness formation are identified and described by model functions. Further the mechanisms are transferred to areal ablation in which surface roughness decreases due to improved hatching angles compared to a commonly used one of φ= 0°/90°. With this approach the roughness is reduced by approximately factor 2,0-3,5 to Sa= 0,82 μm. In conclusion guidelines are derived which present favorable settings for high quality laser ablation processes. | ||
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| author | Daniel, Christian, Manderla, Jannik, Hallmann, Sina, Emmelmann, Claus |
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| contents | Innovative chip breakers for cutting tools made of very hard materials require laser ablation and demand a high quality regarding the manufactured surface. When processing materials such as polycrystalline cubic boron-nitride or tungsten carbide the surface roughness by laser ablation reaches Sa= 1,0-2,9 μm compared to Sa= 0,42 μm achieved by grinding. Therefore in the presented research the influence of the hatching exposure strategy on surface roughness during picosecond laser ablation of tungsten carbide is examined. The areal, layerwise ablation process is separated into its elements which are represented by intersection zones between single and multiple laser vectors. Thus two mechanisms of roughness formation are identified and described by model functions. Further the mechanisms are transferred to areal ablation in which surface roughness decreases due to improved hatching angles compared to a commonly used one of φ= 0°/90°. With this approach the roughness is reduced by approximately factor 2,0-3,5 to Sa= 0,82 μm. In conclusion guidelines are derived which present favorable settings for high quality laser ablation processes. |
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| spelling | Daniel, Christian VerfasserIn (DE-588)1172897425 (DE-627)1041993250 (DE-576)514866357 aut, Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials Christian Daniel, Jannik Manderla, Sina Hallmann, Claus Emmelmann, 2016, Illustrationen, Diagramme, Text txt rdacontent, Computermedien c rdamedia, Online-Ressource cr rdacarrier, Innovative chip breakers for cutting tools made of very hard materials require laser ablation and demand a high quality regarding the manufactured surface. When processing materials such as polycrystalline cubic boron-nitride or tungsten carbide the surface roughness by laser ablation reaches Sa= 1,0-2,9 μm compared to Sa= 0,42 μm achieved by grinding. Therefore in the presented research the influence of the hatching exposure strategy on surface roughness during picosecond laser ablation of tungsten carbide is examined. The areal, layerwise ablation process is separated into its elements which are represented by intersection zones between single and multiple laser vectors. Thus two mechanisms of roughness formation are identified and described by model functions. Further the mechanisms are transferred to areal ablation in which surface roughness decreases due to improved hatching angles compared to a commonly used one of φ= 0°/90°. With this approach the roughness is reduced by approximately factor 2,0-3,5 to Sa= 0,82 μm. In conclusion guidelines are derived which present favorable settings for high quality laser ablation processes., picosecond laser ablation, hatching angle, surface roughness, hard materials, tungsten carbide, Manderla, Jannik VerfasserIn (DE-588)117289843X (DE-627)1041993560 (DE-576)514866586 aut, Hallmann, Sina VerfasserIn (DE-588)1172900469 (DE-627)1041994745 (DE-576)514867507 aut, Emmelmann, Claus VerfasserIn (DE-588)1167357744 (DE-627)1031024530 (DE-576)511117507 aut, Technische Universität Hamburg Sonstige Körperschaft 4oth (DE-588)1112763473 (DE-627)866918418 (DE-576)476770564 oth, Technische Universität Hamburg Institut für Laser- und Anlagensystemtechnik Sonstige Körperschaft 4oth (DE-588)1161856366 (DE-627)1025369742 (DE-576)506934756 oth, Enthalten in Physics procedia Amsterdam [u.a.] : Elsevier, 2008 83(2016), Seite 135-146 Online-Ressource (DE-627)581040333 (DE-600)2455598-8 (DE-576)307016218 1875-3892 nnns, volume:83 year:2016 pages:135-146, https://doi.org/10.1016/j.phpro.2016.08.026 Resolving-System Volltext, http://nbn-resolving.de/urn:nbn:de:gbv:830-882.024354 Resolving-System kostenfrei Volltext, https://doi.org/10.15480/882.1906 Resolving-System kostenfrei Volltext, http://hdl.handle.net/11420/1909 Resolving-System kostenfrei Volltext, http://nbn-resolving.de/urn:nbn:de:gbv:830-882.024354 LFER, LFER 2019-05-07T00:00:00Z |
| spellingShingle | Daniel, Christian, Manderla, Jannik, Hallmann, Sina, Emmelmann, Claus, Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials, Innovative chip breakers for cutting tools made of very hard materials require laser ablation and demand a high quality regarding the manufactured surface. When processing materials such as polycrystalline cubic boron-nitride or tungsten carbide the surface roughness by laser ablation reaches Sa= 1,0-2,9 μm compared to Sa= 0,42 μm achieved by grinding. Therefore in the presented research the influence of the hatching exposure strategy on surface roughness during picosecond laser ablation of tungsten carbide is examined. The areal, layerwise ablation process is separated into its elements which are represented by intersection zones between single and multiple laser vectors. Thus two mechanisms of roughness formation are identified and described by model functions. Further the mechanisms are transferred to areal ablation in which surface roughness decreases due to improved hatching angles compared to a commonly used one of φ= 0°/90°. With this approach the roughness is reduced by approximately factor 2,0-3,5 to Sa= 0,82 μm. In conclusion guidelines are derived which present favorable settings for high quality laser ablation processes., picosecond laser ablation, hatching angle, surface roughness, hard materials, tungsten carbide |
| title | Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials |
| title_auth | Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials |
| title_full | Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials Christian Daniel, Jannik Manderla, Sina Hallmann, Claus Emmelmann |
| title_fullStr | Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials Christian Daniel, Jannik Manderla, Sina Hallmann, Claus Emmelmann |
| title_full_unstemmed | Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials Christian Daniel, Jannik Manderla, Sina Hallmann, Claus Emmelmann |
| title_in_hierarchy | Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials / Christian Daniel, Jannik Manderla, Sina Hallmann, Claus Emmelmann, |
| title_short | Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials |
| title_sort | influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials |
| title_unstemmed | Influence of an angular hatching exposure strategy on the surface roughness during picosecond laser ablation of hard materials |
| topic | picosecond laser ablation, hatching angle, surface roughness, hard materials, tungsten carbide |
| topic_facet | picosecond laser ablation, hatching angle, surface roughness, hard materials, tungsten carbide |
| url | https://doi.org/10.1016/j.phpro.2016.08.026, http://nbn-resolving.de/urn:nbn:de:gbv:830-882.024354, https://doi.org/10.15480/882.1906, http://hdl.handle.net/11420/1909 |
| urn | urn:nbn:de:gbv:830-882.024354 |