Wood drying is to increase the temperature of the wood, causing the moisture in the wood to evaporate and move outward, so that the moisture can quickly leave the wood in the air flowing at a certain flow rate. Microwave drying of wood places wood in a microwave electromagnetic field. The electromagnetic loss caused by the interaction between microwaves and moisture in the wood is converted into heat energy to heat the wood. During the drying process, the moisture content of wood is high on the inside and low on the outside, so its absorption of microwave energy gradually decreases from the inside out, resulting in the same temperature gradient and moisture content gradient inside the wood. In addition, in conventional wood drying, the drying speed is affected by the thickness of the wood; in microwave drying, as long as the wood is within the microwave penetrable range and the wood is heated at the same time, the thickness of the wood has no significant impact on the drying rate.

Compared with traditional hot air drying methods, it has the following advantages:

1. Improve the drying rate of wood: Microwave heating can transfer heat to the inside of the wood faster, thereby quickly evaporating the moisture in the wood. This can significantly reduce the wood drying cycle and improve production efficiency.

2. Maintain wood quality: Since microwave drying is relatively faster, the wood is exposed to high temperatures for a shorter time during the drying process, which helps to reduce some quality losses in the wood.

3. Strong controllability: Microwave drying systems usually have stronger temperature and humidity control capabilities, allowing operators to adjust drying conditions more accurately to meet the requirements of different woods.