Log cracking prevention method

Abstract

The invention discloses a simple log cracking prevention method with obvious effects. The log cracking prevention method is characterized in that a cylindrical pressure-reducing through hole is drilled in the axial center of a log. According to the log cracking prevention method provided by the invention, by virtue of the pressure-reducing through hole drilled in the center of the log, water of the log is released through the pressure-reducing through hole in the center of the log and an outer circumference surface of the log simultaneously. Therefore, the center and the outer surface of the log are more uniformly dried, the inner and outer contraction consistency of the log is good, and cracks are difficult to generate. Particularly, in a log drying and contraction process, the middle of the log is hollow, so that relative tension disappears when the former outward surrounding tension loses a center object supplying center counter-acting force (or supporting force) according to a principle of acting force and counter acting force. Therefore, the cracks are prevented on the four sides of the log, and the yield and the use rate of timber can be greatly improved.

Description

technical field [0001] The invention relates to a method for preserving wood, in particular to a method for preventing cracking of logs. Background technique [0002] After the trees are felled, they are stored as cylindrical logs. When used, they are sawn into corresponding specifications of wood. Because there is a lot of water in the tree trunks, the water on the outer surface of the logs is first released during storage. However, it shrinks inward, and the moisture in the core of the log is still high, resulting in inconsistent shrinkage of the wooden material inside and outside the log. The core of the wood generates a strong tension around the outside, which prevents the wood on the outer surface from shrinking inward. Ultimately, cracks toward the center appear on the circumferential surface of the log, and the larger the diameter of the log, the more and more cracks will become larger, which will seriously affect the variety and utilization of the log, and cause a la...

AI Technical Summary

Problems solved by technology

[0002] After the trees are felled, they are stored as cylindrical logs. When used, they are sawn into corresponding specifications of wood. Because there is a lot of water in the tree trunks, the water on the outer surface of the logs is released first during storage. However, it shrinks inward, and the moisture in the core of the log is still high, resulting in inconsistent shrinkage of the wooden material inside and outside the log. The core of the wood generates a strong tension around the outside, which prevents the wood on the outer surface from shrinking inward. Ultimately, cracks appear on the circumferential surface of the log towards the center, and the larger the diameter of the log, the more and larger the cracks will be, which will seriously affect the variety and utilization of the log, resulting in a large amount of waste of wood every year, which is a pity

Some enterprises can only water the piled wood continuously for many years, which will cause a lot of waste of water resources and energy, and will seriously affect the quality of the logs. Once the water is stopped or the watering is uneven, cracks will still occur. There is nothing the wood industry can do about it

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