CO_2激光雕刻微弧氧化法制陶瓷网纹辊的技术研究  

Investigation on Technique of CO_2 Laser Engraving Micro-arc Oxidation Alumina Anilox

作　　者：陈晓川[1] 鲍勇[1] 季凌飞[1] 蒋毅坚[1] 

机构地区：[1]北京工业大学激光工程研究院,北京100124

出　　处：《应用激光》2011年第1期6-11,共6页Applied Laser

基　　金：国家自然科学基金资助项目(项目编号:50875006);北京市自然科学基金资助(项目编号:2082005);北京市教委面上项目(项目编号:KM201010005032)

摘　　要：随着柔性版印刷在行业中的市场占有率越来越高,其核心部件网纹辊的制造工艺受到了更多的重视。目前陶瓷网纹辊表面的陶瓷涂层主要是通过等离子喷涂方法制成的,其制作成本较高,而且涂层在使用中有脱落的可能。微弧氧化法制成的氧化铝陶瓷克服了传统材料的缺陷,而且制作成本较低。首先使用纯的氧化铝陶瓷片进行前期的激光工艺实验,然后使用微弧氧化法制成的氧化铝陶瓷进行雕刻实验,以证明这种材料用于雕刻网纹辊的可行性。实验中,首先在80～120线/英寸范围内使用CO_2激光器在这种材料上进行静态雕刻实验,在目前广泛使用的60。蜂窝型的网穴角度条件下,分析激光峰值功率、占空比和焦点位置对于网纹辊网穴形状的影响。得到如下结论:(1)为了避免熔渣对网穴形貌的影响,应尽量使用较小的峰值功率与占空比:(2)在保证光斑功率密度的前提下,焦点位置应位于加工材料表面之上,这样才能够获得形状较好得网穴。之后,对微弧氧化法制成的陶瓷辊进行了动态雕刻实验,对实际加工中的关键要素进行了分析,探讨了机床加减速过程、加减速过程中速度变化的不一致性以及激光脉冲前沿位置的不确定性等因素对于网纹辊加工质量的影响,并提出了用于网纹辊加工的激光加工设备的基本要求。The market share of flexography in printing industry is getting higher. As its core component, ceramic anilox is getting more attention than ever before as well as its producing process. The coating of ceramic anilox rollers nowadays are mostly made in the way called plasma spraying. In this thesis, alumina rollers made by micro-arc oxidation are used in stead of plasma spraying. And its feasibility is proved. Experiment on this kind of material is done with CO2 laser on the patterns of 60°, and the effects of laser＇s peak power, duty and focus position on cells are studied. The best parameter of laser engraving ceramic anilox is determined afterward. And mathematical model of the engraving process is built to study their influence on surface temperature and it proves that the analysis of the experiment is correct.At last, successive processing experiment is done on micro-arc oxidation alumina, and requests on anilox processing devices are given.

关 键 词：激光加工微弧氰化 氧化铝陶瓷 陶瓷网纹辊 

分 类 号：TN249[电子电信—物理电子学] TS873[轻工技术与工程]