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  • Effects of machining parameters on raised grain occurring after the application of water-based finishes.

    Author(s) : Ramananantoandro, T.Eyma, F.Belloncle, C.Rincé, S.Irle, M.

    Author Affiliation : Département des Eaux et Forêts, Ecole Supérieure des Sciences Agronomiques, Université d'Antananarivo, Antananarivo, Madagascar.

    Author Email : ramananantoandro@gmail.com

    Journal article : European Journal of Wood and Wood Products 2018 Vol.76 No.4 pp.1323-1333 ref.30

    Abstract : The application of water-based finishesfinishesSubject Category: Miscellaneous
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    to wood surfaces is known to increase surface roughnesssurface roughnessSubject Category: Properties
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    by raising the grain. This phenomenon is detrimental in the appearance of the finished wood surface. To eliminate it, light denibbing is needed prior to applying the second coat of finish. The objective of this study is to optimize wood machining to minimize raised grain caused by water-based coatingscoatingsSubject Category: Commodities and Products
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    and to avoid, or at least, to minimize the sandingsandingSubject Category: Techniques, Methodologies and Equipment
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    operation between each coat of finish. Experiments were done on beech samples. Complete experimental designexperimental designSubject Category: Techniques, Methodologies and Equipment
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    was defined to generate several surface qualities from "smooth" to "rough" which are linked to the average thickness of the removed chips. The planingplaningSubject Category: Techniques, Methodologies and Equipment
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    parameters were the cutting mode, cutting direction, feed speed, and rotation speed. To compare with existing practices in joinery industries, specimens were also sanded. Two layers of water based coating were applied. Half of the samples were sanded after the first coat and the other half were not. Following each coat, surface roughness was measured and raised grain was evaluated through tactile tests. Results show that sanding operation is responsible for more raised grain than planing. Whereas for planing, high chip removal thickness gives more raised grain after coating application. The effectseffectsSubject Category: Properties
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    of the other parameters on raised grain occurence are not found to be statistically significant. The average roughness (Sa), quadratic mean roughness (Sq), reduced peak height (Spk) and the material volume of the peak section (Vmp) are the roughness parameters best correlated with tactile evaluationevaluationSubject Category: Techniques, Methodologies and Equipment
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    of grain raising, but the correlations are weak.

    ISSN : 0018-3768

    DOI : 10.1007/s00107-017-1250-3

    Record Number : 20183313121

    Publisher : Springer-Verlag GmbH

    Location of publication : Berlin

    Country of publication : Germany

    Language of text : English

    Indexing terms for this abstract:

    Descriptor(s) : coatingscoatingsSubject Category: Commodities and Products
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    , effectseffectsSubject Category: Properties
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    , evaluationevaluationSubject Category: Techniques, Methodologies and Equipment
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    , experimental designexperimental designSubject Category: Techniques, Methodologies and Equipment
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    , finishesfinishesSubject Category: Miscellaneous
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    , planingplaningSubject Category: Techniques, Methodologies and Equipment
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    , sandingsandingSubject Category: Techniques, Methodologies and Equipment
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    , surface roughnesssurface roughnessSubject Category: Properties
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    , woodwoodSubject Category: Commodities and Products
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    , wood productswood productsSubject Category: Commodities and Products
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    Identifier(s) : plot design