ProLigno / ProLigno 2010 Numarul 3  









Mihai ISPAS - Universitatea "Transilvania" din Brasov - Facultatea de Industria Lemnului
Adresa: B-dul Eroilor nr. 29, 500036 Brasov, Romania
Tel.: +40 268 419581. Fax: +40 268 419581.

         Lucrarea prezinta rezultatele unei cercetari efectuate in scopul stabilirii daca proprietatile lemnului de stejar (Quercus robur L.) inghetat (in conditii de iarna) sunt diferite de cele ale lemnului neinghetat in ceea ce priveste prelucrarea sa. Epruvetele din lemn de stejar, debitate din acelasi bustean, au fost, jumatate dintre acestea, inghetate la -30°C, iar cealalta jumatate lasate neinghetate, dupa care au fost ferastruite in conditii absolut identice de prelucrare (aceeasi masina, aceeasi scula, aceleasi dispozitive si aceleasi regimuri de aschiere), pentru a determina comparativ consumurile energetice in cele doua cazuri. Rezultatele obtinute au relevat ca inghetarea determina a reducere vizibila a puterii necesare de taiere, respectiv aparenta reducere a rezistentelor mecanice ale lemnului.

Cuvinte cheie: lemn inghetat, stejar, putere de aschiere, consum energetic, rezistente mecanice.

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CAMPEAN, M.; ISPAS, M.; POROJAN, M. (2008). Considerations on Drying Frozen Spruce Wood and Effects upon Its Properties. Drying Technology, Volume 26 (5): 596 - 601.
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*** EN 13183-1:2003. Moisture Content of Timber. Part 1: Determination by Oven-Dry Method.


Pagina creata de Costel AGACHE. Intretinere pagina Luminita Brenci. Ultima actualizare, 15 Octombrie 2010