20.500.12556/RUL-117805 Dejavniki valovitosti rezanega furnirja diplomsko delo - univerzitetni študij Sliced veneer waviness factors Pri proizvodnji plemenitega furnirja je valovitost furnirja napaka, ki znižuje kakovost in vrednost furnirja, v proizvodnji pa zahteva dodatno fazo likanja. Skozi tehnološki proces izdelave rezanega furnirja smo proučevali, kako kakovost vhodne surovine in temperatura sušenja vplivata na valovitost furnirja. Za preizkus smo izbrali štiri hlode bukove hlodovine (Fagus sylvatica L.) z različnimi značilnostmi in spremljali izdelavo furnirja v posameznih fazah. Ugotovili smo, da je valovitost rezanega furnirja tangencialne teksture prisotna v vsakem hlodu povprečno v obsegu 50 %. Največ valovitega furnirja je bilo izrezanega iz razpokanega hloda (61 %), najmanj pa iz ukrivljenega hloda (38 %). Pri sušenju furnirja smo spreminjali temperaturo sušenja in ugotovili, da je furnir sušen pri višji temperaturi (135 °C , 150 °C) manj valovit. Preučili smo tudi možnost avtomatiziranega spremljanja valovitosti furnirja s 3D kamero in ugotovili, da ta način omogoča sortiranje furnirja po kriteriju valovitosti in ga je mogoče integrirati v proizvodni proces The waviness of veneer is defect, that reduces the quality and value of the veneer and in the production of sliced veneer requires an additional technological phase of flattening. Through the technological process of sliced veneer production the quality of input materials and the drying temperature affects on the waviness of veneer was studied. In the research, four logs of beech wood (Fagus sylvatica L.) with different characteristics were selected and the manufacture of veneers in various phases was monitored. It has been found that the waviness of sliced veneer with tangential textures in each log on average to an extent of 50 % were present. The most wavy veneer was cut from the cracked log (61 %) and least from the curved log (38 %). During the drying of the veneer drying temperature was varied and it was found that the veneer dried at a higher temperature (135 °C, 150 °C) was less wavy. The possibility of automated monitoring wavy veneer with 3D cameras was also studied and it was found that this method allows sorting according to the criterion of veneer waviness. The system can be integrated in the technological process furnir rezan furnir napake bukev (Fagus sylvatica L.) veneer sliced veneer defect beech (Fagus sylvatica L.) true false false [D. Srebot] Slovenski jezik Angleški jezik Diplomsko delo 2020-07-27 10:32:20 2020-07-27 10:32:24 2022-08-30 04:00:20 0000-00-00 00:00:00 2015 0 Ljubljana 2015 Ljubljana X, 50 f., [9] f. pril. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*832.281 2478729 UNI_Srebot_Dominik_2015.pdf UNI_Srebot_Dominik_2015.pdf 1 161AA1A6CC9075A7DF1823F33042ADEC b2ccff18a6e8ff41a6c9678de6ce4ecb0e2ca56dd8e9d8d1dddcc53b05f78119 44305f5d-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=131708 Biotehniška fakulteta 0 0 0