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The aim of this paper was to determine the particle size composition of wood dust emission from CNC milling of natural wood and medium-density fiberboard (MDF) and evaluate the associated occupational exposure risks. The paper is focused on some of the most commonly used materials in the woodworking and furniture industry, i.e., solid wood (beech, oak, and spruce) and composite materials (MDF panels). In addition to the influence of the machined material, the effect of the technical-technological parameters, namely, feed speed and depth of cut on the particle size distribution, was also investigated. The selected values of the technical-technological parameters used in this study followed the common work practice in small wood processing companies. The particle size distribution was evaluated by using sieve analysis of samples from the total mass of collected wood dust. The results demonstrated that machining of natural wood is characterized mostly by the formation of coarse dust fractions (2 mm–1 mm sieves), whilst the processing of MDF was associated with generation of fine dust fractions with a size below 100 μm. The results obtained can be used for optimizing the technological programs of CNC milling machines, thus, reducing the occupational exposure to harmful wood dust emissions in the wood-processing industry.
Richard Kminiak; Martin Kučerka; Lubos Kristak; Roman Reh; Petar Antov; Alena Očkajová; Tomasz Rogoziński; Marta Pędzik. Granulometric Characterization of Wood Dust Emission from CNC Machining of Natural Wood and Medium Density Fiberboard. Forests 2021, 12, 1039 .
AMA StyleRichard Kminiak, Martin Kučerka, Lubos Kristak, Roman Reh, Petar Antov, Alena Očkajová, Tomasz Rogoziński, Marta Pędzik. Granulometric Characterization of Wood Dust Emission from CNC Machining of Natural Wood and Medium Density Fiberboard. Forests. 2021; 12 (8):1039.
Chicago/Turabian StyleRichard Kminiak; Martin Kučerka; Lubos Kristak; Roman Reh; Petar Antov; Alena Očkajová; Tomasz Rogoziński; Marta Pędzik. 2021. "Granulometric Characterization of Wood Dust Emission from CNC Machining of Natural Wood and Medium Density Fiberboard." Forests 12, no. 8: 1039.
Wood dust generated during woodworking—particularly from hardwood species during sanding—poses a health and safety hazard to workers in the wood industry. This study aimed to determine the particle-size distribution of selected hardwood species and the content of fine particles in dust created during machine sanding, which pose the highest health and safety hazards in the woodworking industry. Six hardwood species were studied: black alder, European ash, common walnut, pedunculate oak, hornbeam, and European beech. The sieve analysis method was used to determine the particle-size distribution and article mean arithmetic particle diameter, and laser diffraction analysis was used to determine the finest particle content. Two size ranges were assumed: <2.5 μm and <10 μm. Beech dust had the smallest mean particle diameter. Dust from wood species used in the test had similar contents of fine fractions of particles. The average content of particles smaller than 2.5 µm in wood dust from the tested hardwood species did not exceed 1.9%. In terms of occupational exposure to wood dust, machine sanding conditions of hardwoods should be properly adjusted to limit the formation of large amounts of dust.
Marta Pędzik; Tomasz Rogoziński; Jerzy Majka; Kinga Stuper-Szablewska; Petar Antov; Lubos Kristak; Richard Kminiak; Martin Kučerka. Fine Dust Creation during Hardwood Machine Sanding. Applied Sciences 2021, 11, 6602 .
AMA StyleMarta Pędzik, Tomasz Rogoziński, Jerzy Majka, Kinga Stuper-Szablewska, Petar Antov, Lubos Kristak, Richard Kminiak, Martin Kučerka. Fine Dust Creation during Hardwood Machine Sanding. Applied Sciences. 2021; 11 (14):6602.
Chicago/Turabian StyleMarta Pędzik; Tomasz Rogoziński; Jerzy Majka; Kinga Stuper-Szablewska; Petar Antov; Lubos Kristak; Richard Kminiak; Martin Kučerka. 2021. "Fine Dust Creation during Hardwood Machine Sanding." Applied Sciences 11, no. 14: 6602.
Material losses are caused by the machining process and the manufacturing process, as well as the use of excessive dimensional allowances applied to the machined materials. An adequate reduction of the planned machining allowances for wood-based panel components is possible when the machining line is properly designed and equipped with high-precision machines and devices. The aim of the study was to determine the size of material savings in relation to the most important construction materials when implementing an innovative technological line for processing industrial doors made of wood materials. The achieved savings improve the competitiveness of the door manufacturer on the market. In order to calculate the material savings obtained in the production of the most important models of door leaves that can be obtained in machining on the TechnoPORTA line, numerical data were compiled specifying the dimensions of semi-finished products, taking into account machining allowances applied before and after reduction. The implementation of the TechnoPORTA line makes it possible to reduce the negative impact on the environment by reducing the consumption of wood. It reduces the consumption of materials and the operating costs associated with the reduction of labor intensity, the load on machines and devices, and inventory levels.
Zdzisław Kwidziński; Joanna Bednarz; Marta Pędzik; Łukasz Sankiewicz; Piotr Szarowski; Bartłomiej Knitowski; Tomasz Rogoziński. Innovative Line for Door Production TechnoPORTA—Technological and Economic Aspects of Application of Wood-Based Materials. Applied Sciences 2021, 11, 4502 .
AMA StyleZdzisław Kwidziński, Joanna Bednarz, Marta Pędzik, Łukasz Sankiewicz, Piotr Szarowski, Bartłomiej Knitowski, Tomasz Rogoziński. Innovative Line for Door Production TechnoPORTA—Technological and Economic Aspects of Application of Wood-Based Materials. Applied Sciences. 2021; 11 (10):4502.
Chicago/Turabian StyleZdzisław Kwidziński; Joanna Bednarz; Marta Pędzik; Łukasz Sankiewicz; Piotr Szarowski; Bartłomiej Knitowski; Tomasz Rogoziński. 2021. "Innovative Line for Door Production TechnoPORTA—Technological and Economic Aspects of Application of Wood-Based Materials." Applied Sciences 11, no. 10: 4502.
Wood dust poses a threat to the health of employees and the risk of explosion and fire, accelerates the wear of machines, worsens the quality of processing, and requires large financial outlays for its removal. The aim of this study was to investigate the extent to which the grit size of sandpaper influences the size of the wood dust particles and the proportion of the finest particles which, when dispersed in the air, may constitute the respirable fraction. Six species of hardwood (beech, oak, ash, hornbeam, alder, and walnut), and three species of softwood (larch, pine, and spruce) were used in the research. While sanding the samples under the established laboratory conditions, the following were measured for two types of sandpapers (grit sizes P60 and P180): mean arithmetic particle size of dust and finest dust particles content (<10 µm). Based on the obtained results, we found that the largest dust particle sizes were obtained for alder, pine, and spruce; the smallest size of dust particles during sanding with both sandpapers was obtained for beech, hornbeam, oak, ash, larch, and walnut. The mean arithmetic particle sizes ranged from 327.98 µm for pine to 104.23 µm for hornbeam. The mean particle size of the dust obtained with P60 granulation paper was 1.4 times larger than that of the dust obtained with P180 granulation sandpaper. The content of the finest dust particles ranged from 0.21% for pine (P60 sandpaper) to 12.58% for beech (P180 sandpaper).The type of wood (hardwood or softwood) has a significant influence on the particle size and the content of the finest dust fraction.
Marta Pędzik; Kinga Stuper-Szablewska; Maciej Sydor; Tomasz Rogoziński. Influence of Grit Size and Wood Species on the Granularity of Dust Particles During Sanding. Applied Sciences 2020, 10, 8165 .
AMA StyleMarta Pędzik, Kinga Stuper-Szablewska, Maciej Sydor, Tomasz Rogoziński. Influence of Grit Size and Wood Species on the Granularity of Dust Particles During Sanding. Applied Sciences. 2020; 10 (22):8165.
Chicago/Turabian StyleMarta Pędzik; Kinga Stuper-Szablewska; Maciej Sydor; Tomasz Rogoziński. 2020. "Influence of Grit Size and Wood Species on the Granularity of Dust Particles During Sanding." Applied Sciences 10, no. 22: 8165.
The experimental results of the study focused on the effect of drying processes of modified air drying and warm air-steam mixture drying of pine and beech wood on the size of sawdust particles created in cutting using PRW-15M sash gang saw, are presented in the paper. Particle size analysis of dry sawdust was performed using two methods—sieving method and laser diffraction analysis. The results showed that the drying process did not affect the general particle size distribution of the sawdust, but the content of very fine dust particles in beech wood sawdust is many times higher when the beech wood was dried in the warm air-steam mixture drying process and sawn at a feed per tooth of 0.105 mm.
Tomasz Rogoziński; Daniel Chuchala; Marta Pędzik; Kazimierz A. Orlowski; Ladislav Dzurenda; Tomasz Muzinski. Influence of drying mode and feed per tooth rate on the fine dust creation in pine and beech sawing on a mini sash gang saw. European Journal of Wood and Wood Products 2020, 79, 91 -99.
AMA StyleTomasz Rogoziński, Daniel Chuchala, Marta Pędzik, Kazimierz A. Orlowski, Ladislav Dzurenda, Tomasz Muzinski. Influence of drying mode and feed per tooth rate on the fine dust creation in pine and beech sawing on a mini sash gang saw. European Journal of Wood and Wood Products. 2020; 79 (1):91-99.
Chicago/Turabian StyleTomasz Rogoziński; Daniel Chuchala; Marta Pędzik; Kazimierz A. Orlowski; Ladislav Dzurenda; Tomasz Muzinski. 2020. "Influence of drying mode and feed per tooth rate on the fine dust creation in pine and beech sawing on a mini sash gang saw." European Journal of Wood and Wood Products 79, no. 1: 91-99.
The paper concerns the importance of the trend of mass customization in building the competitive advantage of companies in the door joinery sector in Poland. Its purpose is an attempt at assessing the effects of mass customization carried out on a newly designed TechnoPORTA technological line for automated door production on the basis of an analysis of selected technical and economic indexes related to manufacturing costs. The basis for the calculation of these indexes was the value of material and labor costs and the projected production value in relation to eleven selected types of industrial doors. Based on the analysis of technical and economic indexes, it can be concluded that the introduction of the concept of mass customization will reduce gross costs of manufactured products which, with the assumed level of sales, will translate into annual profit. The results obtained allow for optimistic conclusions about the possibility of building the long-term competitive advantage of door manufacturers.
Marta Pędzik; Joanna Bednarz; Zdzisław Kwidziński; Tomasz Rogoziński; Jerzy Smardzewski. The Idea of Mass Customization in the Door Industry Using the Example of the Company Porta KMI Poland. Sustainability 2020, 12, 3788 .
AMA StyleMarta Pędzik, Joanna Bednarz, Zdzisław Kwidziński, Tomasz Rogoziński, Jerzy Smardzewski. The Idea of Mass Customization in the Door Industry Using the Example of the Company Porta KMI Poland. Sustainability. 2020; 12 (9):3788.
Chicago/Turabian StyleMarta Pędzik; Joanna Bednarz; Zdzisław Kwidziński; Tomasz Rogoziński; Jerzy Smardzewski. 2020. "The Idea of Mass Customization in the Door Industry Using the Example of the Company Porta KMI Poland." Sustainability 12, no. 9: 3788.
The present paper provides characteristics of three species of grain straw particles applied in the production of lignocellulose particleboards. For the sake of the investigation, rapeseed, rye, and triticale straw were fragmented to the size of particles used in the wood-based materials industry. The aim of the research was to determine physical properties of particle of rapeseed, rye, and triticale straw and to evaluate their usefulness in the process of manufacturing lignocellulose particleboards purposed for building constructions. Another aspect of the work was to determine the influence of moisture content of straw particles (using rapeseed straw as an example) on properties of the manufactured particleboards made with its use. The conclusion is that each of the investigated materials is characterized by different geometry, poured and tapped bulk density, varied angle of repose, and slippery angle of repose. Differences in sizes and shapes of particles of various grain species and in their moisture content strongly affect properties of particleboards produced with their use. The investigations prove that the best properties are observed for rye straw particleboards. However, due to their physical parameters, difficulties in storage, transport, and particleboards production may happen to be more considerable than in case of other materials.
Dorota Dukarska; Marta Pędzik; Wiktoria Rogozińska; Tomasz Rogoziński; Rafał Czarnecki. Characteristics of straw particles of selected grain species purposed for the production of lignocellulose particleboards. Particulate Science and Technology 2019, 39, 213 -222.
AMA StyleDorota Dukarska, Marta Pędzik, Wiktoria Rogozińska, Tomasz Rogoziński, Rafał Czarnecki. Characteristics of straw particles of selected grain species purposed for the production of lignocellulose particleboards. Particulate Science and Technology. 2019; 39 (2):213-222.
Chicago/Turabian StyleDorota Dukarska; Marta Pędzik; Wiktoria Rogozińska; Tomasz Rogoziński; Rafał Czarnecki. 2019. "Characteristics of straw particles of selected grain species purposed for the production of lignocellulose particleboards." Particulate Science and Technology 39, no. 2: 213-222.