At this time, the moisture content of the wood has been distributed fairly evenly along the layers of the wood section, and the moisture content gradient from the inside to the outside is small. Stop shrinking, and the inner layer of wood should shrink with the removal of absorbed water, so that the shrinkage of the inner layer of wood is limited by the outer layer of wood, and the stress of the inner layer being stretched and the outer layer being compressed, the internal stress The situation is just opposite to that at the initial stage of drying. At this time, if the test piece is sawed into a comb shape, some teeth in the middle of the test piece are free to shrink after breaking away from the shackles of the outer layer, and their size is shorter than that of the outer layer.

There are various types of drying equipment, including hot air drying equipment, vacuum drying equipment, freeze drying equipment, microwave drying equipment, spray drying equipment and rotary drying equipment. Each type of drying equipment has its unique working principle and application scenarios, which can be selected based on the characteristics of the material and drying needs.

In recent years, "high-frequency vacuum drying" has become very popular. This technology has been adopted by many factories due to its advantages such as small footprint, fast drying speed, and environmental friendliness, and has rapidly emerged as an emerging method for wood drying.

Microwave drying of wood is a new technology that has been increasingly used in domestic and international markets in recent years. Compared with traditional drying methods, microwave drying equipment has a series of advantages such as uniform heating, fast drying speed, no deformation, no cracking, good quality, and is conducive to continuous and automated production.

1. Circular drying method This method is mainly applicable to wood such as Korean pine, Masson pine, and spruce. When operating, the wood needs to be divided into two parts: one part is placed in the center of the drying kiln, and the other part is placed around the drying kiln. This method can make the wood dry more evenly.

Drying process of wood drying kiln is divided into three phases, respectively, preheat treatment stage, intermediate stage of processing and normal drying stage.Must be strictly implemented in the process of drying drying process, good grasp of the temperature and time to prevent drying is not complete.

Using ThermoWood in place of regular wood presents several advantages, including but not limited to: Durability: As the wood is treated and becomes more resistant to the effects of insects, decay, and rot, ThermoWood can be used in a variety of outdoor applications without fear of degradation from weather exposure.

To ensure the smooth progress of the wood drying process, it is necessary to conduct a systematic inspection of the facilities in the drying room before each drying, especially the internal facilities. Otherwise, if problems occur during the drying process, it will seriously affect the production cycle and drying quality of wood drying, and also have an impact on the service life of the drying equipment. The equipment inspection before drying mainly includes the inspection of the various systems that make up the drying chamber.

In a living tree, its fibrous roots continuously transport water from the soil through the trunk to the leaves, so the trunk contains a lot of water. After the living tree is felled and sawn into various specifications of sawn timber, some or most of the moisture remains inside the timber, which is the origin of the moisture in the timber. Boards and squares made from freshly felled trees are called green timber.

Working principle of wooden cans: By using a series of operations such as vacuum, pressure, and heating, a certain concentration of anti-corrosion, flame-retardant, and dyeing solution is injected into wood cells through vacuum, high pressure, and frequency pressure to achieve anti-corrosion, mold, moth, termite, flame retardant, and dyeing effects.