Efficiency of Sanding Belts for Beech and Oak Sanding

Očkajová, Alena; Kučerka, Martin; Krišťák, Ľuboš; Ružiak, Ivan; Gaff, Milan

doi:10.15376/biores.11.2.5242-5254

Cited by 20 publications

(21 citation statements)

References 9 publications

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“…During wood conversion and woodworking, to a lesser or greater extent large amounts of waste composed of fine wood dust particles are produced, which may be dispersed in the air causing contamination of the work place (3,4). Wood dusts -both dispersed in the air inside a production plant and deposited -contain also the so-called biological agents of the work environment.…”

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confidence: 99%

Contamination of pine and birch wood dust with microscopic fungi and determination of its sterol contents

Stuper‐Szablewska

Rogoziński

Perkowski

2017

Archives of Industrial Hygiene and Toxicology

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Wood compounds, especially sterols, are connected with the level of contamination with microscopic fungi. Within this study, tests were conducted on wood dust samples collected at various work stations in a pine and birch timber conversion plant. Their contamination with mycobiota was measured as the concentration of ergosterol (ERG) by ultra performance liquid chromatography (UPLC). Another aim of this study was to assess the effect of contamination with microscopic fungi on the sterol contents in wood dusts. Analyses were conducted on five sterols: desmosterol, cholesterol, lanosterol, stigmasterol, and β-sitosterol using UPLC and their presence was confirmed using gas chromatography/mass spectrometry (GC/MS). The results of chemical analyses showed the greatest contamination with mycobiota in birch wood dust. We also observed varied contents of individual sterols depending on the wood dust type. Their highest concentration was detected in birch dust. The discriminant analysis covering all tested compounds as predictors showed complete separation of all tested wood dust types. The greatest discriminatory power was found for stigmasterol, desmosterol, and ergosterol.

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confidence: 99%

Contamination of pine and birch wood dust with microscopic fungi and determination of its sterol contents

Stuper‐Szablewska

Rogoziński

Perkowski

2017

Archives of Industrial Hygiene and Toxicology

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“…Issues resulting from the specific effect of abrasive grains on wood have been studied both from the point of view of machine tool design [9], abrasive tools (type of sandpaper and its grit size) and the technological parameters used (in particular, the contact pressure and speed of the abrasive belt, the size of the surface to be sanded and the orientation of the wood fibers during sanding [10][11][12][13][14][15][16]). The influence of the properties of various species of wood on the effects of sanding were also studied [17][18][19][20][21]. One of the most important measures of the efficiency of the sanding process is the mass of material sanded per unit of time.…”

Section: Introductionmentioning

confidence: 99%

“…Sanding efficiency decreases during the process due to the blunting of the abrasive belt. Ockajova [21], analyzing the literature, identified three phases of sanding belt blunting: initial sharpness, work sharpness and sanding belt blunting. During the initial phase, there is a very large reduction in efficiency during sanding.…”

Section: Introductionmentioning

confidence: 99%

“…At higher contact pressures, the sanding performance decreased more rapidly. In a comparative study on sanding oak and beech wood, Ockajova et al [21] found that the contact pressure that ensures long-term operation of the abrasive belt depends on the direction of sanding and the wood species (the pressure on beech wood may be higher). The species of wood in these studies had a greater influence on sanding belt efficiency than the direction of cutting.…”

Section: Introductionmentioning

confidence: 99%

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Efficiency of Machine Sanding of Wood

et al. 2021

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We hypothesized that the type of wood, in combination with the grit size of sandpapers, would affect sanding efficiency. Fixed factors were used in the experiment (a belt sander with pressure p = 3828 Pa, and a belt speed of vs = 14.5 m/s) as well as variable factors (three sand belts (P60, P120, P180), six hardwood species (beech, oak, ash, hornbeam, alder, walnut) and three softwood species (pine, spruce, larch)). The masses of the test samples were measured until they were completely sanded. The sanding efficiency of hardwood species is less variable than for softwood species. Maximum sanding efficiency for the softwood ranged from 1 to 2 min, while for the hardwood species, it ranged from 2 to 4.5 min at the start of sanding and then decreased. The average time for complete sanding of the softwood samples was: 87 s (P60), 150 s (P120), and 188 s (P180). For hardwood, these times were 2.4, 1.5, and 1.8 times longer. The results indicate that the factors determining sanding efficiency are the type of wood, and, secondly, the grit size of sanding belts. In the first phase of blunting with the sanding belts, the sanding processes of hardwood and softwood are significantly different. In the second phase of blunting, sanding belts with higher grit numbers (P120 and P180) behaved similarly while sanding hardwood and softwood.

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“…In terms of technology, milling is defined as the process of material machining with a rotary tool, either with a milling blade or milling head, and is characterized by chip production, where the chip thickness varies from minimum to maximum thickness and vice versa (Wyeth et al 2009;Kubš and Kminiak 2017). The quality of milled surfaces is significantly higher than that of sawn surfaces (Rogozinski et al 2015;Očkajová et al 2016Očkajová et al , 2018Rogozinski et al 2017;Kučerka and Očkajová 2018). However, not even milling guarantees an ideal smooth surface, there is always a certain degree of roughness (Sedlecký 2017).…”

Section: Introductionmentioning

confidence: 99%

Effect of cutting conditions on quality of milled surface of medium-density fibreboards

Kminiak

Siklienka

Igaz

et al. 2019

BioRes

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The quality of milled surface medium-density fibreboards (MDF) and the effect of the wrong milling direction during the process of automatic milling in real conditions in practice (production machine, production tool, and material) are presented in the paper. Moreover, the effect of the double vs. single bladed milling cutter on the final surface quality with the simultaneous changes in individual parameters of feed rate, thickness of the removed layer, and cutting direction was investigated. The MDF was separated using the strategy “one per pass“ with required cutting direction (climb or conventional) and the required thick strips cutting off (4 mm to 16+ mm) at a constant operation speed of the milling cutter (n = 20000 min−1) and a changing feed rate from vf = 1 m/min−1 to vf = 5 m/min−1. The use of a multi-bladed milling cutter resulted in the higher quality of the milled surface in all cases (change in feed rate, thickness of removed layer, and cutting direction). The effect of the wrong milling direction during automatic milling was observed only for a single-bladed milling cutter used. An increase in surface roughness (Ra) occurred; therefore, using the double-bladed milling cutter, which was not associated with an increase in surface roughness, is recommended.

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Efficiency of Sanding Belts for Beech and Oak Sanding

Cited by 20 publications

References 9 publications

Contamination of pine and birch wood dust with microscopic fungi and determination of its sterol contents

Contamination of pine and birch wood dust with microscopic fungi and determination of its sterol contents

Efficiency of Machine Sanding of Wood

Effect of cutting conditions on quality of milled surface of medium-density fibreboards

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