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Solid wood utilization method for small-diameter timber

A small-diameter wood and small-diameter technology, which is used in the preliminary treatment of promoting the drying of solid materials, wood drying, and dryers for static materials, etc., can solve the problems of easy ring cracking and large reduction losses

Active Publication Date: 2021-02-19
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wood is an anisotropic material, and its drying shrinkage rate in the chord direction is much greater than that in the radial direction. If small-diameter logs are directly dried, it is easier to produce serious visible drying defects such as ring cracks, and the loss of grade reduction is relatively large.

Method used

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  • Solid wood utilization method for small-diameter timber
  • Solid wood utilization method for small-diameter timber
  • Solid wood utilization method for small-diameter timber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0102]Example: Solid wood utilization of small diameter eucalyptus

[0103]1. Preparation of small-diameter semi-cut timber

[0104]1-1. Half cut treatment

[0105]Take the small-diameter eucalyptus logs to be dried, measure the diameter of the small-diameter eucalyptus, and take the average value as the radius r (r=80mm) of the small-diameter logs to be used for solidification; then cut the small-diameter eucalyptus into logs with a length of b=3m ; Then use a joiner's band saw to cut the small diameter eucalyptus along the longitudinal axis of symmetry, that is, cut along the axial section of the small diameter log, so that each small diameter eucalyptus log becomes two horizontal The cross-section is a semi-circular half-cut material.

[0106]1-2. Determine the initial moisture content MCearly

[0107]Randomly select 5 pieces from small diameter eucalyptus half-cut wood and weigh them, and calculate their average value mn;

[0108]Then put the 5 small-diameter eucalyptus half-cut wood into an ove...

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Abstract

The invention discloses a solid wood utilization method for small-diameter timber. The solid wood utilization method includes the process of sequentially carrying out air-seasoning treatment, steamingtreatment and drying treatment on the small-diameter timber. With the solid wood utilization method for the small-diameter timber, the problem about the drying quality, such as cracking and warping which are prone to happening to the small-diameter timber in the drying process, is solved, meanwhile, the growth stress of the small-diameter timber is relieved, the water evaporation area is increased, the drying rate of the small-diameter timber is increased, the drying cycle is shortened, the timber drying quality is improved, and the drying cost is reduced.

Description

Technical field[0001]The invention belongs to the field of wood drying and modification, in particular to the field of solid wood utilization of small-diameter wood.Background technique[0002]In recent years, domestic high-quality wood materials suitable for the manufacture of solid wood furniture have become increasingly scarce, while the output of plantation wood has increased year by year. Therefore, the extensive use of fast-growing forest wood with abundant reserves in the furniture manufacturing industry is of great practical significance for realizing the transformation of raw materials and technological upgrading of the real furniture industry. Small diameter eucalyptus is difficult to process due to its special material properties (low density, low strength, high growth stress, poor permeability, etc.), and it is easy to produce defects such as cracks and deformation during logging and conventional drying, and the yield rate is low. This will affect the efficient use of smal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B3/04F26B1/00F26B9/06F26B25/22
CPCF26B3/04F26B1/005F26B9/066F26B25/22F26B2210/16
Inventor 何正斌伊松林李金朋曲丽洁钱京
Owner BEIJING FORESTRY UNIVERSITY