目的 为了控制复杂零件表面阳极氧化的膜层分布均匀性,用定量计算替代人工试错。方法 以机身框零件阳极氧化为研究对象,通过有限元仿真软件Elsyca Anodizing Manager建立模型,并进行仿真模拟,采用窃取和遮蔽的方案调整机身框表面的阳极氧化膜厚均匀性,系统研究了窃取和遮蔽的尺寸和位置对机身框零件表面电流分布和阳极氧化膜层分布的影响,从而确定机身框阳极氧化工装结构与尺寸,通过后续实际生产对有限元仿真进行验证。结果 当工装窃取直径为10 mm,窃取到零件的距离为20 mm,遮蔽到零件距离为20 mm时,机身框零件表面阳极氧化膜层厚度满足8~12 μm的交付要求。结论 利用该工装进行阳极氧化实验,阳极氧化膜层厚度分布与仿真结果的差距在5%以内,说明仿真结果可靠,同时,工装设计周期缩短了80%。
Abstract
The work aims to control the coating distribution uniformity on the surface of complex parts during anodizing, and use quantitative calculation instead of the manual trial and error method. Taking the anodizing of fuselage frame parts as the research object, a model was established using the finite element simulation software Elsyca Anodizing Manager, and simulation was carried out. The thickness uniformity of the anodized coating on the surface of the fuselage frame was adjusted using the stealing and masking scheme. The influence of the size and position of stealing and masking on the surface current distribution and anodized coating distribution of the fuselage frame parts was systematically studied to determine the structure and size of the fuselage frame anodizing equipment. The finite element simulation was verified through subsequent actual production. The results indicated that when the stealing diameter of the tooling was 10 mm, the distance from stealing to the parts was 20mm, and the distance from the masking to the parts was 20 mm, the thickness of the anodized coating on the surface of the fuselage frame parts met the delivery requirements of 8-12 μm. Using this tooling for anodizing experiments, the difference in thickness distribution of the anodized coating compared with simulation results is within 5%, indicating reliable simulation outcomes. Additionally, the tooling design cycle is shortened by 80%.
关键词
阳极氧化 /
工装设计 /
有限元仿真 /
膜层分布 /
电流分布
Key words
anodizing /
tooling design /
finite element simulation /
coating distribution /
current distribution
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