This study examined the evolution of the surface topography of imperfections in response to painting. Critically-sized imperfections on industrially produced coated sheet steel surfaces were sampled, and carefully characterized. Changes in the surface topography were measured after painting simulations, and visibility after painting was assessed. Three-dimensional optical profilometry was demonstrated to be a powerful technique for assessing imperfection topographies and their evolution during painting; several imperfections that were completely invisible through human inspection after painting were still measurable by 3-D topography. Two primer surfacer systems were used, to compare a conventional liquid system with a high-build anti-chip powder system.While most imperfections remained visible after e-coating, the results showed that many surface imperfections are rendered invisible after final top coating, and the results provide a basis for industry to begin developing measurement-based inspection criteria for imperfection severity. The powder primer surfacer system was found to be much more effective in attenuating imperfections. A simple model was hypothesized to understand topography evolution, based on film shrinkage during paint curing, with some important implications related to painting system variables.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    TOPOGRAPHY ASSESSMENT OF COATED STEEL SHEET SURFACE IMPERFECTIONS IN RELATION TO APPEARANCE AFTER PAINTING


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Matlock, D.K. (Autor:in) / Chung, J.-H. (Autor:in) / Speer, J.G. (Autor:in) / Choi, Y.-M. (Autor:in)

    Kongress:

    International Body Engineering Conference & Exposition ; 2003



    Erscheinungsdatum :

    27.10.2003




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Effects of Steel Surface Texture on Appearance After Painting

    Bastawros, Adel F. / Zerafa, Gorica / Speer, John G. et al. | SAE Technical Papers | 1993


    Effects of steel surface texture on appearance after painting

    Bastawros,A.F. / Speer,J.G. / Zerafa,G. et al. | Kraftfahrwesen | 1993


    Effect of Sheet Surface Roughness and Painting Variables on Painted Sheet Appearance

    Scialabba, B. J. / Perfetti, B. M. / Nilan, T. G. | SAE Technical Papers | 1980