基于人工神经网络的铝铜合金硬质阳极氧化工艺优化

发布时间：2019-02-28 06:50

【摘要】：目的探究Al-5%Cu合金硬质阳极氧化处理的最佳工艺。方法采用硬质阳极氧化试验装置对Al-5%Cu合金进行硬质阳极氧化处理,并用扫描电镜和显微硬度计研究了在硫酸电解液中生成的硬质阳极氧化膜的微观组织结构、厚度及硬度。综合采用正交试验以及人工神经网络的方法,设计了三因素三水平的实验方案,研究了硫酸溶液温度、电流密度和阳极氧化时间对硬质阳极氧化膜的硬度及膜层厚度的影响。利用人工神经网络系统对Al-5%Cu合金阳极氧化的工艺参数进行了优化。结果采用硬质阳极氧化技术可以增加Al-5%Cu合金的表面硬度。制备的氧化膜厚度较均匀,表面质量较好,硬度较高。硫酸溶液的温度是影响表面氧化膜层微观组织及硬度的主要因素。结论 Al-5%Cu合金进行硬质阳极氧化的最佳工艺条件范围为:氧化液温度-9~-7℃,电流密度4~4.8 A/dm2,氧化时间115~120 min。
[Abstract]:Objective to study the optimum process of hard anodizing treatment of Al-5%Cu alloy. Methods the hard anodized Al-5%Cu alloy was treated by hard anodizing test device. The microstructure of the hard anodized film formed in sulfuric acid electrolyte was studied by scanning electron microscopy and microhardness tester, and the microstructure of hard anodized film formed in sulfuric acid electrolyte was studied by scanning electron microscope (SEM) and microhardness tester. Thickness and hardness. An experimental scheme of three factors and three levels was designed by means of orthogonal test and artificial neural network. The effects of sulfuric acid solution temperature, current density and anodizing time on the hardness and thickness of hard anodized film were studied. The process parameters of anodic oxidation of Al-5%Cu alloy were optimized by using artificial neural network system. Results the surface hardness of Al-5%Cu alloy can be increased by hard anodizing technology. The thickness of the oxide film prepared is uniform, the surface quality is better, and the hardness is higher. The temperature of sulfuric acid solution is the main factor affecting the microstructure and hardness of surface oxidation film. Conclusion the optimum technological conditions for hard anodizing of Al-5%Cu alloy are as follows: the temperature of oxidation solution is-9 ~ 7 鈩，

本文编号：2431595