Investigating the Sanding Process of Medium-Density Fiberboard and Korean Pine for Material Removal and Surface Creation

Jian, Zhang; Ying, Junhua; Feng, Chen; Liu, Hongguang; Luo, Bin; Li, Li

doi:10.3390/coatings8120416

Cited by 13 publications

(10 citation statements)

References 20 publications

(23 reference statements)

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“…When it comes to 2α = 108°, no clear raised ridges were found, and the critical position of the scratch trajectory and the uncut surface seems to be a highly compressed area due to a bigger rake angle (absolute value). According to a previous study, the effect shows that the material plastic deformation was partially absorbed by the wood anatomical cavities [7]. Due to the existence of sharp cutting edges, the shredding of wood fibers was much easier to observe for scratches cut by triangular pyramid tools.…”

Section: Resultsmentioning

confidence: 99%

“…Fv primarily leads to material elastic and plastic deformation, and increases as single grit penetrates deeper into the wood surface, while Fh mainly pushes the removed chips forward. According to previous research [7], the subsurface layer is compressed and densified by the Fv, and, when the plastic deformation exceeds the maximum capability of anatomical cavities absorption, some of the deformed material will be pushed aside, which leads to pile-up ridges caused by a ploughing effect. At the initial stage, most of Fn is transformed into material compression.…”

Section: Resultsmentioning

confidence: 99%

“…During sanding or a grinding process, the material removal mechanism is commonly described in three phases, which are rubbing, ploughing, and cutting [23]. According to previous research, plastic deformation presents pile-up and surface densification for wood materials [7]. Specifically, the spherical cone tools have poor cutting geometries, and, therefore, the material is not efficiently cut.…”

Section: Resultsmentioning

confidence: 99%

“…In fact, the material removal in sanding processes is characterized by a multitude of irregularly shaped, randomly arranged abrasive grits, which interact with the workpiece [6]. Zhang et al [7] conducted a series of single-grit scratching tests aimed at investigating the material removal and surface creation for wood materials. In the research, elastic recovery at the rubbing stage was first verified and anatomical cavities’ absorbing effect was proposed to account for the tiny plastic pile-up at two sides of furrows.…”

Section: Introductionmentioning

confidence: 99%

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Cutting Characteristics for Sugar Maple Using Single Grit with Spherical Cone and Triangular Pyramid Geometries

Jian

Luo

et al. 2019

Materials

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Abrasive belt sanding plays an important role in wood processing. The abrasive grits on the belt perform similar to small cutting tools with negative rake angles. In this study, a series of single-grit scratching tests were carried out on Sugar maple workpieces to investigate the cutting characteristics of two different abrasive-grit shapes. The spherical cone grits had two kinds of included angles, and the triangular pyramid grits provided two cutting forms: one main cutting edge and two side cutting edges as well as two main cutting edges. Both scratching along and across the wood grain direction were conducted. In all cases, the material deformation and surface creation were analyzed, as well as cutting force. Several physical cutting models were established to help further understand the cutting mechanism. A new method was proposed to evaluate the energy consumption of single-grit scratching. The results showed that triangular pyramid grits with sharp cutting edges could sever wood fibers more efficiently, while spherical cone grits are prone to make material plastic deformation mainly manifested as superficial densification and pile-up. When scratching along the wood grain, the triangular pyramid grit with two main cutting edges showed the best cutting performance with better surface quality. It was also shown that the cutting force ratio of spherical cone grits was apparently less than that of triangular pyramid grits. The overall cutting power for spherical cone grits was remarkably higher than that for triangular pyramid grits for both scratching along and across the wood grain, which indicates that triangular pyramid grits have higher cutting efficiency and power utilization.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cutting Characteristics for Sugar Maple Using Single Grit with Spherical Cone and Triangular Pyramid Geometries

Jian

Luo

et al. 2019

Materials

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“…Medium density fiberboard (MDF) is a natural fiber composite manufactured in a hydraulic hot press under certain pressure temperature and and time [3]. Its applications include furniture industries, loudspeaker boxes, roofing, vapor repulsion, sound proofing, interior cladding for houses and slat walls [4][5][6]. The destiny of medium density fiberboard as per EN-323 standard is 720 ± 20 kg/m 3 .…”

Section: Introductionmentioning

confidence: 99%

Effect of Iron Oxide Nanoparticles on the Physical Properties of Medium Density Fiberboard

et al. 2020

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This paper investigates the influence of iron oxide (Fe2O3) nanoparticles on the physical properties of medium density fiberboard (MDF). In this study, three different nano iron oxide loadings, i.e., 0.5, 1.5 and 2.5 wt %, and untreated poplar fibers were used. The iron oxide (Fe2O3) nanoparticles were initially dispersed into urea formaldehyde resin using a high-vacuum mechanical stirrer before being incorporated into natural fibers. The untreated poplar fibers were wound onto metal frames to produce dry mat layers. Twenty different composite samples were made. All composite samples were tested for physical properties, i.e., thickness swelling, water absorption, moisture content and density in accordance with standards EN-317, ASTM D570, EN-322 and EN-323 respectively. Based on the results, it was found that the incorporation of homogeneously dispersed iron oxide nanoparticles significantly improved thickness swelling (Ts). Moreover, water absorption (WA) improved by up to 49.18 and 34.54%, respectively, at the highest loading of 2.5 wt %. Microstructure was investigated and characterized with scanning electron microscopy (SEM), x-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) and we examined whether iron oxide nanoparticles exhibit good interactions with urea formaldehyde and poplar wood fibers. Heat and mass transfer investigation in the form of differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) was carried out due to the impact of Fe2O3 nanoparticles. The curing temperature and thermal stability of the resin were enhanced due to the addition of Fe2O3 nanoparticles. A one-way ANOVA statistical analysis was established to effectively control the use of Fe2O3 nanoparticles. Therefore, the presence of iron oxide nanoparticles in an epoxy polymer contributes to a stiffer matrix that, effectively, enhances the capability of improving the physical properties of nano MDF.

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Engineering the surface properties of bamboo scrimber to enhance the gluing properties

Zhang

et al. 2022

Polymer Composites

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The adhesive ability of bamboo scrimber is critical for its use in large‐scale engineering structures. Cold‐pressed bamboo scrimber with varying sanding mesh and density was made and then bonded with polyurethane resin. The adhesive was concentrated on the surface, assisting the anchoring into the material surface. The shear strength and immersion peel strength are studied as parameters to determine the glue qualities. The optimum gluing characteristics were obtained using a 120 grit sandpaper and a density of 1.15 g/cm3. The results indicated that at a density of 1.15 g/cm3, the gluing characteristics rose initially and subsequently dropped as the number of sanding meshes increased. The bonding strength improved with increasing density when 120‐mesh sanding was used. With increasing density, the bamboo fiber distribution inside the material got more compact, while the resin dispersion became more uniform. Thus, the surface porosity and roughness were decreased.

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Investigating the Sanding Process of Medium-Density Fiberboard and Korean Pine for Material Removal and Surface Creation

Cited by 13 publications

References 20 publications

Cutting Characteristics for Sugar Maple Using Single Grit with Spherical Cone and Triangular Pyramid Geometries

Cutting Characteristics for Sugar Maple Using Single Grit with Spherical Cone and Triangular Pyramid Geometries

Effect of Iron Oxide Nanoparticles on the Physical Properties of Medium Density Fiberboard

Engineering the surface properties of bamboo scrimber to enhance the gluing properties

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