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Wood drying technique

A wood drying and drying technology, which is applied in the direction of wood processing equipment, humidity control wood, drying solid materials, etc., can solve the problems of high processing cost, only suitable, unfavorable promotion, etc., to shorten the drying cycle, ensure processing accuracy, and versatility Good results

Inactive Publication Date: 2008-07-30
金国庆
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AI Technical Summary

Problems solved by technology

The advantages of these processes are that they can achieve a nearly perfect drying effect for specific wood, and it is not easy to crack and deform the wood. However, the disadvantage is that the processing cost is very high, and it is only suitable for laboratory use. Ordinary processing plants cannot afford expensive equipment, which is not conducive to to promote
In addition, these crafts are often designed for some special woods, and the versatility is not good

Method used

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Embodiment Construction

[0011] The invention includes three steps of wet heat treatment, drying stage and final cooling stage. Among them, the wet heat treatment is controlled by the time basis, the drying stage is controlled by the moisture content basis, and the cooling stage is the equilibrium moisture content basis.

[0012] We take European imported 50mm thick beech as an example to explain the implementation method of the wood drying process technology of the present invention. Beech wood itself contains a large number of fungal organisms. If the drying base is too soft, white-gray mold will initially form in a low-temperature and high-humidity environment, and it will turn into black spots after drying for a period of time. The surface of the polluted board is as deep as 2mm. At the same time, the wood density is relatively high (air-dry density is 0.74g / cm3), the radial and chord shrinkage ratio is large (differential shrinkage rate is 1.8), and the wood rays are wide and many. If the drying ...

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Abstract

The invention discloses a wood drying technology, which comprises a moist heat treatment, a drying step, a finishing step and a cooling step, wherein, the finishing step and the cooling step are combined to a finishing-cooling step. The invention adopts the progressive combination drying technology, namely, the moist heat treatment is controlled by a time base, and is controlled by a water-content coefficient base after the drying step, and the finishing-cooling step is a balancing water-content coefficient base. As the finishing step and the cooling step are combined to a finishing-cooling step, the wood drying technology of the invention assures the finishing treatment effect, and also saves energy and shortens drying period. The adoption of the progressive combination drying technology, namely, different base control method is adopted at different stage, assures machining accuracy, and the good versatility suits for various wood.

Description

technical field [0001] The invention belongs to wood processing technology. Specifically, it relates to a wood drying process. Background technique [0002] Different from isotropic materials like metal, wood is a naturally growing organism with thousands of tree species. Even the wood of the same tree species has different physical and chemical performance will vary greatly. Therefore, wood must be pre-treated before it can be used. Among them, wood drying is an important link, and it is also the first and most critical process. Good drying of wood has the following four main functions: one is to improve the stability of wood products, the other is to increase the strength of wood products, the third is to prevent the deterioration and decay of wood materials, and the fourth is to reduce the weight of wood . In addition, it also has the functions of insecticidal and epidemic prevention, degreasing treatment of pine wood, discoloration treatment of some wood, etc. The ...

Claims

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Application Information

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IPC IPC(8): F26B3/00B27K1/00
Inventor 金国庆
Owner 金国庆
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