Because of their anti-corrosion, straightness and beauty, fir poles are mainly used for river reinforcement, river slope protection and decoration. In the urban landscaping management center, if a large tree is transplanted without good support, the tree will be damaged after watering or in windy and rainy weather. It is easy to fall over. Therefore, landscape support poles are needed. Fir poles are popular because of their straightness, beauty, and corrosion resistance.

Generally, the drying methods of wood are: wood is usually dried at 100 degrees Celsius; wood is dried at high temperatures of 100-150 degrees Celsius; drying at high temperatures of 50 degrees Celsius, while the heat treatment of wood is at low temperatures close to or above 200 degrees Celsius. Continuous treatment in an oxygen environment for a certain period of time. The hemicellulose in the wood is degraded, the hydroxyl groups on the wood cell walls are reduced, and the hygroscopic properties of the wood are reduced, thereby improving the dimensional stability and resistance to biological damage.

Compared with untreated wood, the moisture content of fir wood after heat treatment is lower, the corresponding expansion and contraction properties are improved, and the corrosion resistance of treated wood is obviously improved. Moreover, the hygroscopicity of treated wood is reduced, and the hygroscopicity curve and desorption curve are the same. The distance between them is larger than that of untreated wood, which reduces the folding edge, and the difference in radial thermal expansion and contraction of the pipe column causes deformation. When the treatment temperature exceeds 200 degrees Celsius, the uniform radial wood treatment effect of the wood is better, while the knotted or There are many defects in the string material after treatment, so the fir pole needs to be subjected to high-temperature heat treatment.

The treatment process has an important impact on the material, such as treatment temperature, treatment time, heating rate, wood type, specimen weight and size, initial moisture content and other parameters, which will all affect the performance of the product. The determination of the treatment process is mainly based on the purpose of the product. , optimize to improve water absorption and reduce mechanical properties, and find an acceptable balance point.