微流道换热器传热板选区激光熔化成型精度研究
Study on Selective Laser Melting Fabrication Accuracy of Heat Transfer Plate of Microfluidic Heat Exchanger
赵仕宇 1陈向文 1詹艳然2
作者信息
- 1. 福州职业技术学院机电工程系,福建 福州 350108
- 2. 福州大学机械工程及自动化学院,福建 福州 350108
- 折叠
摘要
针对微流道换热器传热板的传统加工工艺中存在的高成本、污染环境等问题,采用模拟仿真与实验验证相结合的方法,研究了基于选区激光熔化技术成型传热板的主要工艺参数与成型尺寸精度的关系.结果表明,扫描间距对打印件X、Y方向的最大位移影响不明显,而激光功率和扫描速度影响显著.增大激光功率,X方向主要受边缘熔池影响,最大位移值先减小后趋于平稳,Y方向主要受内部熔池影响,其最大位移先增大后减小.增加扫描速度时,X、Y方向最大位移值均先减小后增大.当扫描间距为60 μm、激光功率165 W、扫描速度1 050 mm/s时可成型出尺寸精度较好的零件.
Abstract
This study investigates the relationship between key process parameters and dimensional accuracy in the fabrication of heat transfer plates for microfluidic heat exchangers using selective laser melting(SLM)technology,addressing issues of high cost and environmental pollution associated with traditional processing methods.Simulation and experimental validation were employed to analyze the effects of scanning distance,laser power,and scanning speed on part accuracy.The findings indi-cate that scanning distance has a negligible impact on the maximum displacement in the X and Y directions of the fabricated parts,whereas laser power and scanning speed significantly influence dimensional accuracy.Increasing the laser power,the maximum displacement value decreases first and then tends to be stable,since the length of plates in X direction is mainly af-fected by the edge molten pool,and in the Y direction,the length is mainly affected by the internal molten pool,and the maxi-mum displacement first increases and then decreases.When the scanning speed is increased,the maximum displacement values in the X and Y directions decrease first and then increase.When the scanning distance is 60 m,the laser power is 165 W,and the scanning speed is 1 050 mm/s,plates with good dimensional accuracy can be fabricated.
关键词
选区激光熔化/模拟仿真/微流道换热器/传热板Key words
selective laser melting/simulation/micro-channel heat exchanger/heat transfer plate引用本文复制引用
出版年
2024
NETL
NSTL
万方数据