DESPRE PRELUCRABILITATEA LEMNULUI DE STEJAR INGHETAT SI NEINGHETAT

Mihai ISPAS
Prof.dr.ing. - 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.
E-mail: ispas.m@unitbv.ro

Rezumat:
         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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*** EN 13183-1:2003. Moisture Content of Timber. Part 1: Determination by Oven-Dry Method.