林业工程学报2025，Vol.10Issue(4)：61-68,8.DOI:10.13360/j.issn.2096-1359.202410017
基于低温CO2的相思木车削加工性能分析
Analysis on the turning performance of Acacia mearnsii using cryogenic CO2
摘要
Abstract
Quality requirements for cutting processes in the wood industries are becoming increasingly stringent due to the growing demand for precision and superior machining results.Excessive cutting temperatures during machining can negatively impact surface integrity and overall quality of the machined wood.In this study,cryogenic CO2 was employed as a cooling method to improve the cutting performance of Acacia mearnsii.Experiments were conducted under two conditions,i.e.,dry turning and cryogenic CO2 turning.A comprehensive comparison was made to analyze the cutting temperature,cutting force,and machining quality under these different conditions.The experimental results revealed that,in both dry and cryogenic CO2 environments,an increase in cutting depth and feed rate led to a rise in cutting temperature,cutting force,and surface roughness.Conversely,increasing cutting speed caused the cutting temperature to rise but resulted in reductions in cutting force and surface roughness.These findings highlighted the complex interplay between machining parameters and their effects on processing outcomes.In addition,compared to dry cutting,the use of cryogenic CO2 demonstrated a significant ability to reduce the cutting zone temperature effectively.Furthermore,cryogenic CO2 increased the hardness and brittleness of the wood.While this resulted in higher cutting forces during machining,it also contributed to fewer burrs and a smoother surface finish.The cooling mechanism altered the wood fiber breakage behavior,making the process more efficient under specific conditions.On one hand,under high feed rate and deep cutting conditions,cryogenic CO2 exhibited substantial cooling efficiency,improving the quality of rough machining.On the other hand,cryogenic CO2 also showed particular advantages in high-speed machining scenarios,where enhanced chip evacuation and reduced chip accumulation minimized tool impacts.This contributed to greater process stability and higher machining quality,particularly during precision finishing operations.In general,this research highlights the dual benefits of cryogenic CO2 cooling in enhancing both the rough and fine machining stages of wood cutting.These findings establish a strong theoretical foundation and offer practical insights for enhancing the application of cryogenic CO2 in industrial wood cutting processes.They provide a pathway for improving both productivity and product quality in the wood industry.关键词
相思木/低温CO2车削/切削温度/切削力/表面质量Key words
Acacia mearnsii/cryogenic CO2 turning/cutting temperature/cutting force/surface quality分类
轻工纺织引用本文复制引用
张天揽,钱利云,郝展鹏,张丰,郭晓磊..基于低温CO2的相思木车削加工性能分析[J].林业工程学报,2025,10(4):61-68,8.基金项目
国家自然科学基金(32471791). （32471791）
