钛合金基体化铣保护胶层激光刻型工艺参数研究  

Study on Laser Engraving Process Parameters of Protective Coatings on Titanium Alloy Substrate for Chemical Milling

作　　者：裴丽艳 王辉 孙鹏鹏 王健[2] PEI Liyan;WANG Hui;SUN Pengpeng;WANG Jian(AECC Shenyang Liming Aero-Engine Co.LTD.,Liaoning Shenyang 110043,China;School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China)

机构地区：[1]中国航发沈阳黎明航空发动机有限责任公司,辽宁沈阳110000 [2]北京航空航天大学机械工程及自动化学院,北京100083

出　　处：《电镀与精饰》2021年第11期29-35,共7页Plating & Finishing

基　　金：国家重点研发计划(2016YFB1102503)。

摘　　要：为获得满足刻透化铣胶膜但不伤及钛合金基体的激光刻型工艺参数和一般规律,以AC850激光刻型胶为涂覆层材料,通过设计析因实验研究了工艺参数中激光功率、刻型速度、激光频率等刻蚀深度的影响;结合材料的烧蚀阈值,选取不同激光刻型工艺参数、氩气保护条件与自然条件下进行刻型实验,利用显微镜检测每条刻线刻型质量和影响规律。结果表明,激光刻型功率、刻型速度、激光频率对刻型质量都会产生一定影响,主要取决于激光能量密度决定(0.424~1.67 J/cm^(2));在激光功率6 W和刻型速度800 mm/s(即能量密度0.4244 J/cm^(2))条件下,激光刻线的上下边沿都保持良好的刻线边缘质量。激光平均功率与刻型深度存在线性正相关关系、激光刻型速度与刻型深度存在线性负相关、激光频率受到激光功率影响对刻型存在一定影响,相同进给速度和激光平均功率的参数下,激光的脉冲频率对刻线的质量有较大影响;激光刻型中氩气保护对激光刻型质量无明显的影响。To obtain the process parameters and general rules of laser engraving that penetrate chemical milling protective coating without damaging the titanium alloy matrix,taking AC850 as the protective coating for laser engraving,factorial experiments were designed to study the effects of process parameters on etching depth,including laser power,speed and frequency.Different laser engraving process parameters were selected for engraving experiments,and the engraving quality and influence law of engraving line are detected by microscope.The engraving quality depends on the power,engraving speed and laser frequency,which mainly depends on the laser energy density(0.424-1.67 J/cm^(2));Under the conditions of laser power 6 W and engraving speed 800 mm/S(i.e.energy density 0.4244 J/cm^(2)),the edges of laser engraving maintain good engraving edge quality.There is a linear positive correlation between the average laser power and the engraving depth,and a linear negative correlation between the laser engraving speed and the engraving depth.Under the same parameters of feed rate and average laser power,the laser pulse frequency has a great influence on the quality of engraving.Argon protection and natural conditions in laser engraving have no obvious effect on the quality of laser engraving.

关 键 词：激光刻型 钛合金基体 化铣保护胶层 析因实验 工艺参数 

分 类 号：V261.93[航空宇航科学与技术—航空宇航制造工程]