China Shandong Junxu Heavy Industry (Group) Co., Ltd. Company Cases

Wood Modification Equipment: Redefine Wood Performance, Unlock Diverse Scenarios​ Wood modification equipment is a revolutionary technical device in the modern wood processing industry. It reconstructs wood structure at the molecular level through precise control of physical and chemical composite processes, enabling ordinary wood to achieve a leapfrog upgrade in performance. Its core working principle covers two major technical paths: physical modification, represented by high-temperature thermal treatment, which gradually heats wood from room temperature to 160-240℃ (precisely set according to different wood species such as poplar and pine) in a closed cavity protected by nitrogen or inert gas. Through 8-12 hours of constant temperature treatment, the hemicellulose inside the wood undergoes moderate degradation, the lignin molecular chains are rearranged, and the number of hydrophilic groups is permanently reduced. This process is like giving wood a "high-temperature exercise", keeping its moisture content in the golden range of 8%-12%, so that it can maintain morphological stability even in environments with drastic humidity changes.​ Chemical modification focuses on acetylation technology, placing wood in acetic anhydride solution and completing 3-6 hours of acetylation reaction in a reactor at 80-120℃. During the reaction, hydroxyl groups (-OH) in wood cells are replaced by acetyl groups, like covering the wood surface with a "waterproof film", fundamentally blocking the moisture absorption channel. At the same time, some equipment is also equipped with a resin impregnation system, which injects environmentally friendly resin into wood conduits through a vacuum-pressure process. The "skeleton support" structure formed after curing can increase wood hardness by more than 40%.​ It is worth mentioning that advanced wood modification equipment is equipped with a PLC intelligent control system, which cooperates with a multi-sensor array to monitor key parameters such as temperature (accuracy ±1℃), pressure (±0.01MPa), and humidity (±2%RH) in real time, and automatically adjusts the process curve. This means that the performance deviation of each cubic meter of modified wood can be controlled within 5%, completely solving the industry pain point of "different quality in the same batch" in traditional processing.​ In practical applications, these advantages are transformed into tangible scenario value: in the field of outdoor landscapes, plank roads and pavilions made of high-temperature modified wood can resist rain 浸泡 and ultraviolet aging, with their service life extended from 5-8 years of traditional wood to 15-20 years, and annual maintenance costs reduced by more than 40%; in bathroom decoration, wall panels and cabinets made of acetylated modified wood will not mold or deform even in a humid environment for a long time; in the high-end furniture manufacturing industry, due to excellent stability, the loss rate of modified wood during cutting and sanding is reduced from 10% to 3%, and the paint adhesion is increased by 20%, easily achieving diversified surface effects such as matte and high gloss.​ More importantly, this technology conforms to the global green development trend. Physical modification has no chemical additives throughout the process, the reagents used in chemical modification can be recycled, and the modified wood can still be recycled and degraded after its service life. For wood processing enterprises, one equipment can convert low-value fast-growing wood into high-end materials comparable to precious hardwood, reducing raw material costs by 30% while increasing product premium space by more than 50%. From outdoor fences of rural B&Bs to solid wood floors of five-star hotels, from children's furniture to large-scale landscape projects, wood modification equipment is using technological strength to make wood bloom lasting value in more scenarios.​  

Key Features of High-Frequency Vacuum Dryers: High-Frequency Heating: High-frequency vacuum dryers employ electromagnetic waves with frequencies typically ranging from 13.56 to 100 MHz. These waves penetrate the wood material, causing the water molecules to vibrate and generate heat. This high-frequency heating process accelerates the drying time significantly. Vacuum Environment: A high-frequency vacuum dryer creates a low-pressure environment within the drying chamber. By reducing the air pressure, the boiling point of water decreases, enabling the moisture to evaporate at lower temperatures. The vacuum environment enhances the drying efficiency and prevents the wood from overheating or drying too quickly. Radio Frequency Generator: The heart of a high-frequency vacuum dryer is the radio frequency (RF) generator. This device generates the high-frequency electromagnetic waves required for the drying process. The RF generator is capable of adjusting the frequency and power output to suit different wood species and moisture content levels. Drying Chamber: High-frequency vacuum dryers feature a drying chamber where the wood material is placed for drying. The chamber is designed to withstand the vacuum environment and is typically constructed using materials that are resistant to electromagnetic interference. It may also have insulation to minimize heat loss and improve energy efficiency. Temperature and Moisture Control: Advanced high-frequency vacuum dryers have temperature and moisture control systems. These systems monitor and regulate the drying conditions inside the chamber, ensuring optimal drying parameters. Temperature and moisture sensors, along with automated controls, allow for precise adjustments to achieve the desired moisture content in the wood. Safety Features: High-frequency vacuum dryers incorporate safety features to protect both the equipment and the operators. These may include emergency shut-off systems, temperature sensors, pressure relief valves, and alarms. Safety measures are in place to prevent overloading, overheating, or other potential hazards during operation.