TAILIEUCHUNG - Báo cáo lâm nghiệp: "The influence of selected factors on energy requirements for plain milling of beech wood"

Tuyển tập những bài báo cáo nghiên cứu khoa học hay nhất được đăng trên tạp chí JOURNAL OF FOREST SCIENCE đề tài: The influence of selected factors on energy requirements for plain milling of beech wood. | JOURNAL OF FOREST SCIENCE 56 2010 5 243-250 The influence of selected factors on energy requirements for plain milling of beech wood s. Barcík1 R. Kminiak2 T. Rehák1 M. Kvietková2 -Department of Wood Processing Faculty of Forestry and Wood Sciences Czech University of Life Sciences Prague Prague Czech Republic Department of Wood Working Faculty of Wood Sciences and Technology Technical University in Zvolen Zvolen Slovakia ABSTRACT The paper deals with differences in energy requirements for cutting input at plain milling of beech wood with and without false heart with different changing parameters of cutting and feed speed and angular geometry of the tool. Created on optimal model from the aspect of not only energy consumption but also the quality of milling which would also decisively affect the economic indicators of the wood - working process. Keywords angular geometry beech cutting input cutting speed false heart feed speed milling In an effort to make use of the highest volume of wood mass from a tree for the best quality assortments we are looking for ways of utilizing the logs with some defects such as . false heart. On a European scale the false heart most often occurs in the tree species beech which is the most important broadleaved species not only in Slovakia from the viewpoint of its commercial use. Therefore some European regions created all-embracing working groups who strive to reach a universal goal which is an improvement of market acceptance of beech heartwood. Orientation is focused on the production of exclusive furniture Rehák 2009 . At present with constantly rising claims for wood processing and a subsequent increase in prices the question of energy intensity Gaff 2008 of production has come to the fore. Milling as one of the basic and widespread methods of wood-working strongly depends on electrical energy. Annual costs of energy used in wood processing reach multi-million amounts. But it is possible to decrease them by a proper use of .

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