MDF-Facade Technologies

Gayda, S.V.

doi:10.36930/42184410

2018

DOI: 10.36930/42184410

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MDF-Facade Technologies

S.V. Gayda

Abstract: It is established that a worthy alternative to furniture facades made of natural wood are facades made of MDF materials: moldings and boards. The constructions are considered and the comparative analysis of constructions of three MDF facades is considered: MDF-Facade№1 for a hall frame-and-tile construction (a tile - a plate of MDF, bars - a MDF profile), a facade-MDF№2 for a hall frame-and-tile design (a tile) - MDF board, bars - solid wood), MDF-3 facade painted for the hallway (door base - MDF board). Moder… Show more

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Cited by 10 publications

References 2 publications

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Дослідження Впливу Режимних Параметрів Процесу Тер-Мічної Обробки Деревини Ясена На Формостійкість Комбінованих Меблевих Щитів

Ilkiv,

Solonynka,

Hrytsak

et al. 2019

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It has been established that the process of thermal modification of wood is an environmentally friendly way of protecting wood. Thermal modification of wood also makes it possible to significantly improve the appearance of wood of low-grade species by changing their color. Method and the results of experimental research of form stability of the combined furniture boards. The influence of mode parameters of the process of heat treatment of wood on the shape resistance of the received boards is determined. The mathematical and graphical dependence of the form stability of the combined furniture boards on the operating parameters of the process of heat treatment of the wood of ash were obtained. It is substantiated that the flatness of furniture panels is greatly influenced by the technological accuracy of the equipment used in the final calibration of finished panels. It has been investigated that the temperature of the thermal modification process is more influenced by the plane of the combined furniture panel than its duration. It is established that the results of experimental studies of the flatness of combined furniture boards, almost all of them do not meet the requirements of the standard. Only combination furniture panels made from a combination of ash wood sections obtained at a modification temperature of 190 ° C and treatment times of 4 and 10 hours with sections of untreated wood meet the requirements of the standard. The deviations from the flatness of the experimental shield data are 0.29 and 0.34 mm, respectively. The justification is made that the unsatisfactory results can be explained by the fact that the individual parts of which the combined shield consists of react differently with the humidity of the environment. It has been found that the combined furniture panels, the sections of which are treated with temperature t = 220 ° C, have the ability to retain their geometric dimensions and shape better than when treated with temperature t = 160 ° C or without treatment. It is recommended to use the results obtained during student preparation and in production conditions to obtain quality products that meet the requirements of the standards.

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Дослідження Впливу Режимних Параметрів Процесу Тер-Мічної Обробки Деревини Ясена На Формостійкість Комбінованих Меблевих Щитів

Ilkiv,

Solonynka,

Hrytsak

et al. 2019

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The cupping of lumber depending onchangeoftheir moistureand geometric characteristics

Udovytska,

Tysovskyj,

Mayevskyy

et al. 2019

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Laminated panels are common among structural elements for the production of a variety of wood products. Most studies of laminated structures are limited to the analysis of their physical and mechanical characteristics. In the case of using laminated panelsas the facade surfaces of joinery and furniture, the importance of their aesthetics is also important. The quality of the laminated structures is conditioned by the properties of its individual sections, so it is important to take into account the properties of these sections for the rational choice of the scheme for the formation of the laminated structure and to predict its quality. The main reasons for the possible change in the shape of the surfaces of the laminated structures are described. Drying and swelling lead to a change in the size and shape of both parts and products of wood and lumber used for their manufacturing. The warpingof lumber is a pronounced defect. The main causes of the lumber warpingare the anisotropy of the properties of the wood and the unevenness of its structure, as well as the uneven change in moisture in different structural directions. The lumber, depending on their location in the log, has unequal resistance to the transverse cup warping. When calculating moisturedeformations, the concept of relative deformation of drying is used. Quantitative characteristics of wood drying are the corresponding coefficients of drying characterizing the change in geometric dimensions. If the drying of the layers of the board is not equal, then such boards will have a transverse cup warping. In order to solve the problem of rational choice of the formation scheme of laminated panel structures and predicting their quality even before gluing, the mathematical model for the theoretical study of the shape change of lumber was developed. Obtained engineering formulas for calculating the coefficients of wood drying show that the form change of lumber depends mainly on its size, moisture and location in the log. To determine the magnitude of the shrinkage coefficients of the lumber layers, it is advisable to use the shrinkagecoefficients in the radial and tangential directions.

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Дослідження Впливу Породи Та Режимів Шліфування На Питому Продуктивність Шліфувальної Шкурки

Gayda,

Petryshak,

Somar

2020

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It is investigated that wood species influences the indicators of grinding process: surface roughness, specific skin productivity, skin efficiency, cutting force, which in general also depend on the speed of cutting and feeding, pressing force, abrasive grain size. It is confirmed that the specific productivity of the skin during the grinding of spruce is higher by 14.25-18.77% than when processing oak wood. It is established that with the increase of the feed rate the height of the irregularities increases, as the thickness of the chips, which is removed by one active grain, increases. This is significant for tree species with lower density and hardness. It is investigated that with the increase of the feed rate during the treatment of the oak wood surface the specific productivity of the sanding skin increases by 24.62-31.40%, and in spruce – by 23.14-24.02%. It is established that with the increase of grinding time during the treatment of the oak wood surface the specific productivity of the skin decreases by 162.68-190.40%. and in spruce – by 114.29-176.09%. The specific productivity of the skin during the grinding of spruce is higher by 18.90-22.47% than when processing oak wood. It is confirmed that with increasing grain size of the abrasive, the purity of the polished surface deteriorates, ie the value of the roughness of the treated surface is directly proportional to the grain size of the abrasive. It was found that the presence of oils in spruce causes rapid salinization of the skin, ie to reduce its efficiency. It was found that the sequence of use of the positions of the skins help to increase the productivity of grinding and obtain the purity of the desired class. To carry out effective grinding to obtain a quality surface, the following input processing values are recommended: cutting speed 20-30 m / s; feed speed 6-8 m / min; specific clamping force 2.2-4.4 kPa; grain size of skins: P180-P150; P120-P100; P90-P60.

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MDF-Facade Technologies

Cited by 10 publications

References 2 publications

Дослідження Впливу Режимних Параметрів Процесу Тер-Мічної Обробки Деревини Ясена На Формостійкість Комбінованих Меблевих Щитів

Дослідження Впливу Режимних Параметрів Процесу Тер-Мічної Обробки Деревини Ясена На Формостійкість Комбінованих Меблевих Щитів

The cupping of lumber depending onchangeoftheir moistureand geometric characteristics

Дослідження Впливу Породи Та Режимів Шліфування На Питому Продуктивність Шліфувальної Шкурки

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