Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Effects of the Knife-Incising and Longitudinal Kerfing Treatment on High-Temperature Drying Characteristics of Red Pine Square Timber

배할 및 자상-인사이징 처리가 소나무 정각재의 고온건조 특성에 미치는 영향

  • Lee, Chang-Jin (Department of Wood Science & Technology, Chonbuk National University) ;
  • Lee, Nam-Ho (Department of Wood Science & Technology, Chonbuk National University) ;
  • Oh, Seung-Won (Department of Wood Science & Technology, Chonbuk National University)
  • 이창진 (전북대학교 목재응용과학과) ;
  • 이남호 (전북대학교 목재응용과학과) ;
  • 오승원 (전북대학교 목재응용과학과)
  • Received : 2016.05.03
  • Accepted : 2016.07.05
  • Published : 2016.09.25
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Abstract

This study was carried out to confirm the effects of the knife-incising and longitudinal kerfing treatment on high-temperature drying characteristics of red pine square timber with dimensions of thickness 15 cm. The range of final moisture content was investigated 5.6% to 7.5% after drying. The differences did not exist in the moisture content and distribution according to the pretreatment condition. In the case of longitudinal kerfing treatment, the surface check occurrence was reduced than the control. In addition, the twist had a tendency to decrease due to the longitudinal kerfing treatment. The knife-incising and longitudinal kerfing treatment were investigated to be ineffective on internal checks and drying shrinkage.

본 연구에서는 배할과 자상-인사이징 처리가 두께 15 cm 크기 소나무 정각재의 고온건조 특성에 미치는 영향을 확인하기 위해 수행되었다. 건조 후 최종함수율은 5.6% ~ 7.5% 범위였으며, 전처리조건에 따른 함수율분포에 차이는 없는 것으로 조사되었다. 배할의 경우 재면할렬 발생을 감소시키는 것이 가능하였으며, 뒤틀림은 약간 감소되는 경향을 나타내었다. 배할과 자상-인사이징 처리는 내부할렬과 건조 수축률에 영향을 미치지 않는 것으로 나타났다.

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References

  1. Hermawan, A., Fujimoto, N., Sakagami, H. 2012. Effects of high-temperature and low-humidity pretreatment on the drying properties of sugi boxed-heart timber with black-colored heartwood. Drying Technology 30(7): 780-786. https://doi.org/10.1080/07373937.2012.663433
  2. Hwang, K.H., Park, B.S. 2009. Effect of cross-sectional dimension on the shrinkage property of Korean red-pine wood. Journal of the Korean Wood Science and Technology 37(3): 231-238.
  3. Hsu, N.N., Tang, R.C. 1974. Internal stresses in wood logs due to anisotropic shrinkage. Wood Science 7(1): 43-51.
  4. Lee, C.J., Lee, N.H., Eom, C.D., Shin, I.H., Park, M.J., Park, J.S. 2013. Effect of end-coating around pith of heavy timbers of red pine and korean pine on high-temperature and low-humidity drying characteristics. Journal of the Korean Wood Science and Technology 41(3): 221-233. https://doi.org/10.5658/WOOD.2013.41.3.221
  5. Lee, C.J., Lee, N.H., OH, S.W. 2016. Effects of the knife-incising and kerfing pretreatment on moisture content and surface check occurrence of douglas-fir heavy timber. Journal of the Korean Wood Science and Technology 44(3): 302-314. https://doi.org/10.5658/WOOD.2016.44.3.302
  6. Lee, C.J., Lee, N.H., Kim, B.J., OH, S.W. 2015. Distribution of the final moisture content according to the timber size, wood assortment, and species on Thinning Timber dried with high-temperature and low-humidity drying. 2015 proceeding of the Korean Society of Wood Science Technology annual meeting, pp. 238-239.
  7. Lee, C.J., Lee, N.H., OH, S.W. 2015. Characteristics of twist occurrence according to the cross-sectional size and species on Thinning Timber dried with high-temperature and low-humidity drying. 2015 proceeding of the Korean Society of Wood Science Technology annual meeting, pp. 236-237.
  8. Lee, C.J., Lee, N.H., Park, M.J., Park, J.S., Eom, C.D. 2014. Effect of reserve air-drying of korean pine heavy timbers on high-temperature and low-humidity drying characteristics. Journal of the Korean Wood Science and Technology 42(1): 49-57. https://doi.org/10.5658/WOOD.2014.42.1.49
  9. Park, G.S. 2010. Tell the Hanok. Iljinsa Publishing Co., Seoul, Korea.
  10. Park, M. J., Jung, H. S. 1987. High-temperature drying of Pinus densiflora and Pinus rigida dimension lumber. Journal of the Korean Wood Science and Technology 15(2): 53-66.
  11. Simpson W.T. 1991. Dry kiln operator's manual. Forest Products Laboratory, Madison, Wisconsin, USA.
  12. Shin, I.H. 2010. Effect of the pretreatment of high-temperature and low-humidity on the drying rate and the prevention of checking during methods of heavy timbers of domestic softwoods. Master's Thesis, Chonbuk National University, Korea.
  13. Yoshida, T. 2008. Development of high temperature drying of wood. Wood Industry (Japan). 63(9): 400-405.
  14. Yoshida, T., Hashizume, T., Takeda, T., Tokumoto, M., Inde, A. 2004. Reduction of Surface Checks by the High-Temperature Setting Method on Kiln Drying of Sugi Boxed-Heart Timber without Back-Splitting. Journal of The Society of Materials Science, Japan 53(4): 364-369. https://doi.org/10.2472/jsms.53.364