Abstract
This study was carried out to estimate drying schedule of Fagaceae four species grown in Kangwon-Do by oven-drying at $100^{\circ}C$ which aimed to elucidate the characteristics such as current moisture content, drying process, initial check, collapse and internal check during drying. The results were summerized as follows ; Current moisture content of each board showed a rapid drying curve with the hight initial moisture content of board and species with the high initial moisture content took long to do drying. Appearance of checks for Quercus variabilis were extremely severe and estimated schedule was $T_5-C_2$. The shrinkage rate of grain direction was in the order of tangential direction > radial direction > longitudial direction and the shrinkage rate of oven-drying at $100^{\circ}C$ was bigger than normal shrinkage rate.
강원도산(江原道産) 참나무과(科) 4수종(樹種)의 건조특성(乾燥特性)을 파악코져 $100^{\circ}C$에서 급속건조(急速乾燥)를 실시하여 건조중(乾燥中) 함수율(含水率)과 건조경과(乾燥經過), 초기할렬(初期割裂)(목구할렬(목구할렬(木口割裂))과 표면할렬(表面割裂)), 찌그러짐, 내부할렬(內部割裂) 등의 건조결함(乾燥缺陷)을 조사(調査)하여 추정건조(推定乾燥)스케쥴을 작성(作成)한 결과(結果)는 다음과 같다. 건조시간별(乾燥時間別) 건조중(乾燥中) 함수율(含水率)은 초기함수율(初期含水率)이 높은 판재(板材)일수록 급속(急速)한 곡선적(曲線的) 감소(減少)를 나타내었고 건조소요시간(乾燥所要時間)이 길었으며 굴참나무가 건조중(乾燥中) 할렬(割裂)의 발생량(發生量)이 가장 크게 나타났으며 구해진 추정건조(推定乾燥)스케쥴은 $T_5-C_2$였다. 또한 모든 수종(樹種)의 목리방향별(木理方向別) 수축율(收縮率)은 접선방향(接線方向)(T) > 방사방향(放射方向)(R) > 섬유방향(纖維方向)(L)의 순위(順位)였으며 급속건조법(急速乾燥法)에 의한 수축율(收縮率)이 정상적인 수축율(收縮率)보다 크게 나타났다.