Monday, October 11, 2010

Wood Department of diffuse porous wood and wood characteristics

Wood Department of diffuse porous wood and wood characteristics. Heart sapwood distinction is not obvious. hearts wood light brown, Hui He, reddish brown to golden yellow or a deep reddish brown, purplish brown stripes; sapwood light color, the new yellow-white cut surface. Growth rings indistinct. pores clear under the magnifying glass , loose, few of them slightly smaller. axial parenchyma apparent under a magnifying glass, the main column for the string band. wood rays can be seen under a magnifying glass, slightly dense, narrow. wave stellar marks and cell no. luster weak wood to medium, dry wood has no special smell and taste. until the d Christian Louboutin eer are usually porphyritic texture; structure to slightly rough. ant trees are about 30 species, divided into heavy wood ants, termites, red ants, wood and wood products Category 3 material (it was divided into 4 class). a great shrinkage of wood properties; all dry shrinkage rate;
string to 6.1%; radial 3.6%. dimensional stability is quite good. timber weight to very heavy wear; basic density 0.52gcm3, gas dry density greater, 0.58 ~ 0.64gcm3; strength, compressive strength parallel to grain 46MPa, bending strength 79MPa, modulus of elasticity 10.7GPa. good nail holding power, to prevent cracking of wood, nails before the appropriate pre-drilling.

No comments:

Post a Comment