林业工程学报2025，Vol.10Issue(2)：67-71,5.DOI:10.13360/j.issn.2096-1359.202404030
基于等效代换法激光切削桦木极速燃烧特性的研究
Study of rapid combustion characteristics of laser-cut birch wood based on the equivalent substitution method
摘要
Abstract
This study took birch wood as the research object to explore the rapid combustion mechanism of wood under the action of laser.Based on the proposed concept of rapid combustion characteristics of wood,this study examined the equivalent energy distribution in laser cutting wood.This approach aims to enhance laser cutting efficiency in the production process and contribute to understanding the fundamental mechanisms involved in laser processing.Avoiding complex optical and lumber theories,as well as the analysis of intricate chemical combustion reaction products,this study applied the law of mass-energy conservation and the equivalent substitution method.The ratio of the energy acting on four different regions of the wood was used to characterize the wood's rapid combustion properties,and a calculation method for the ratio of the equivalent energy efficiency was provided.Through the comparative testing between the wood with 11%moisture content and absolutely dry wood,we found that,at laser powers of 45.5 and 130.0 W,the equivalent energy distribution between the cutting area and the affected area was roughly equal,at around 50%.However,at a laser power of 78.0 W,the combined equivalent energy share of the wood and moisture in the cutting seam increased to nearly 60%.This indicated that the wood burned most efficiently at the cutting seam at this rapid speed,with higher laser energy utilization observed at 78.0 W.At 130.0 W,the energy consumption of water in the affected area was relatively high,indicating that,when the laser power was high,the affected area was wider and the wood burned insufficiently at high speeds.At 45.5 W,the energy consumption of wood in the affected area was relatively high,while the energy consumption of water was slightly low.This indicated that,when the laser power was low,the width of the affected area was small,and the carbonization phenomenon of wood was more obvious,that is,the degree of incomplete combustion was small,and the wood in the affected area burned more fully at high speeds.Using the CMA1390 laser machine for tangential and longitudinal cutting of birch wood with a moisture content of 11%,at a power of approximately 78.0 W,rapid combustion was more complete,resulting in high energy utilization.关键词
激光切削/桦木/极速燃烧特性/等效代换法Key words
laser-cut/birch/rapid combustion characteristics/equivalent substitution method分类
农业科技引用本文复制引用
李庆增,赵昊民,赵洪刚,王卿平,齐华春,刘明利..基于等效代换法激光切削桦木极速燃烧特性的研究[J].林业工程学报,2025,10(2):67-71,5.基金项目
吉林省预算内基本建设资金(创新能力建设)计划(2024C006-6) （创新能力建设）
吉林省科学技术厅项目(20220508119RC,20230202092NC) （20220508119RC,20230202092NC）
北华大学研究生创新计划项目(研创合字[2023]015). （研创合字[2023]015）
