文献类型：期刊文献

英文题名：Study on the application of UV laser in QR code marking of wood flooring

作者：Peng, Xiaorui[1] Hou, Xiaopeng[1] Tang, Zhaoqun[1] Meng, Fandan[1]

第一作者：彭晓瑞

通信作者：Peng, XR[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Key Lab Wood Sci & Technol State Forestry Adm, East Small House,Xiangshan Rd 2, Beijing 100091, Peoples R China

年份：2025

卷号：192

外文期刊名：OPTICS AND LASER TECHNOLOGY

收录：;EI(收录号：20252818737263);Scopus(收录号：2-s2.0-105009762626);WOS:【SCI-EXPANDED(收录号:WOS:001529787200002)】；

基金：The authors thank the financial support of the national key research and development plan of 14 th five year plan, National Key R & D Program of China (No. 2023YFD2201500) ; the Basic scientific research business expenses special funds central public welfare scientific research in-stitutes of China, "Functional treatment and evaluation of wood mate-rials" (CAFYBB2023PA004) .

语种：英文

外文关键词：UV laser; Wood floor; QR code; CO2 laser, Marking depth

摘要：Using QR codes to collect and track data throughout the entire production process of wooden flooring to achieve quality traceability and intelligent manufacturing production is necessary. At present, laser marking for QR code assignments is characterized by high accuracy, good quality, and resistance to wear and tear, and it is highly valued by wooden floor manufacturers. According to the properties of wood flooring, common wood surface laser treatments are usually Carbon dioxide laser, but UV (355 nm) lasers have high accuracy, short wavelength, easy focusing and easy control of the HAZ, and for the small mark of high contrast, good definition and so on, it can be considered to be used in wood fine processing. In this study, experiments were conducted on the surface of wooden floors using UV laser to mark QR codes. The effects of UV laser treatments on the laser marking depth, microstructure, and chemical composition changes of the wooden floor surface under different processing conditions were investigated. The result showed that the UV laser removed some material during QR code marking, under the experimental conditions, as marking speed and line spacing increased, the marking depth of both types of wood using the two lasers significantly decreased, but the decrease was different. At a marking speed of 200-400 mm/s and line spacing of 0.03 mm,UV laser exhibited relatively deep QR code markings with good recognition speed and clarity, making it suitable for industrial production. The marking depth of different woods after UV laser marking varied. This variation was related to the texture and material of the wood. The speed of UV laser marking was relatively slow, but it required low power and small line spacing. Under experimental conditions, the marking depth and clarity were relatively high for different wood treatments. This study provides a certain technical foundation for applying UV laser marking in quality traceability and intelligent manufacturing within the wood industry. In order to verify the feasibility of the application of ultraviolet laser, a comparative study of ultraviolet laser and CO2 laser marking is carried out. The results show that the scanning speed of CO2 laser is 1000 to1600 mm/s and the line spacing is 0.1 mm, when the distance between lines is 0.3 mm, the marked depth is relatively shallow, and the recognition speed and degree are decreased. Especially for teak, when the laser speed is 2000 mm/s, the marked depth is as low as 0.1 mm, and the two-dimensional code is not easy to be recognized. Compared with CO2 laser, the depth of UV laser marking is deeper, and the speed of marking is much slower, but the power and line spacing are smaller.