The Influence of Thermomechanical Smoothing on Beech Wood Surface Roughness

Gáborík, Jozef; Gaff, Milan; Ruman, Daniel; Šomšák, Marek; Gaffová, Zuzana; Svoboda, Tomáš; Vokatý, Vojtěch; Síkora, Adam

doi:10.15376/biores.12.1.448-456

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…Surface characterization of the materials is another important issue to be addressed [19][20][21][22]. Surface properties, such as roughness, may play an important role in the effectiveness of surface treatments on wood [23].…”

Section: Introductionmentioning

confidence: 99%

Consolidation of Fir Wood by Poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) Treatment: Study of Surface and Mechanical Characteristics

2020

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The ability of poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) (PVBVA) to consolidate Fir wood was studied in terms of the surface and mechanical properties’ changes. Two variables were considered to treat the wood: (i) the concentration (5 and 10 wt.%) of PVBVA solutions and (ii) the method of application (brushing and immersion). The presence of PVBVA on the wood surfaces was confirmed by infrared spectroscopy. Surface roughness measured by optical profilometry did not reveal changes in the topography of the samples, and appropriate visual appearance was confirmed. Contact angle measurements showed that a droplet of the 10%-PVBVA solution needed ~50 s to reach the same contact angle decreasing rate as that measured for the 5%-PVBVA solution, suggesting there was some kind of induction time till the spreading process was no longer controlled by the viscosity, but by the solution-wood interactions. Water contact angle (WCA) measurements proved a more hydrophobic surface of the PVBVA-treated samples, compared to untreated wood. Mechanical characterization of the samples was done macroscopically by a three-point bending test and locally by the Shore D and Martens hardness (MH). Only results from MH experiments provided comparative results, indicating that treatment with PVBVA solutions increased wood hardness locally, being enhanced with solution concentration. The best surface mechanical properties were obtained for the samples immersed in the 10%-PVBVA solution.

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Section: Introductionmentioning

confidence: 99%

Consolidation of Fir Wood by Poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) Treatment: Study of Surface and Mechanical Characteristics

2020

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“…Roughness parameters are important indicators of surface quality of wood, and they are analyzed for different machining techniques. Research on the surface roughness of wood materials has been conducted for sawing (Kilic et al 2006;Kılıç 2015;Kminiak and Gaff 2015), milling (Škaljić et al 2009), sanding (Salca and Hiziroglu 2012;Hazir et al 2017;Salca et al 2017), cutting by water (Li et al 2015), plasma treatment (Demirkir et al 2014), and wood densification, including thermal treatment (Bekhta et al 2014;Gáborík et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Effect of sharpness angle and feeding speed on the surface roughness during milling of various wood species

Pinkowski

Szymański

Krauss

et al. 2018

BioRes

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The article presents research on the effect of the sharpness angle on the quality of machined surface of native wood species (pine, beech, and black locust) and an exotic species called iroko. Four sharpness angle values were analyzed at 25, 40, 45, and 55°. The experiment was conducted on a bottom-spindle milling machine, with a constant spindle rotational speed (6000 min-1) and four feeding speeds of 3.2, 8.3, 12.5, and 16.7 m/min. The influence of sharpness angle, feeding speed, and wood species on the quality of machined surface of wood was determined. The optimum ranges of the sharpness angle were established with respect to wood surface quality. The surface roughness of the samples decreased with decreasing in the sharpness angle in range of 55° to 40°. The optimal value of the angle was 40°, and the roughness increased with increasing feeding speed. It was found that an increase in wood density decreased surface roughness.

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The Influence of Thermomechanical Smoothing on Beech Wood Surface Roughness

Cited by 2 publications

References 2 publications

Consolidation of Fir Wood by Poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) Treatment: Study of Surface and Mechanical Characteristics

Consolidation of Fir Wood by Poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) Treatment: Study of Surface and Mechanical Characteristics

Effect of sharpness angle and feeding speed on the surface roughness during milling of various wood species

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