摘要
铝合金铬酸氧化膜层不透明,颜色由灰白色到深灰色或彩虹色,比硫酸氧化膜和草酸氧化膜要薄得多,一般厚度只有1～5μm,能保持原来零件的精度和表面粗糙度;膜层质软、弹性高,基本上不降低原材料的疲劳强度;同时,铬酸氧化膜与有机物的结合力良好,是油漆的良好底层,因此,飞机上的结构件很多都需要铬酸阳极化处理。本文介绍了铝合金铬酸阳极化的前处理、上挂、脱脂、清洗、脱氧、阳极氧化、封闭等工艺流程,对每个工序的常用的处理方式加以分析比较,从而找出最佳阳极化处理工艺流程。
Aluminum alloy chromic acid anodizing film of opaque, color from gray to dark gray or rainbow colors, sulfuric acid and oxalic acid than the oxide film is much thinner. General thickness only 1～5μm can keep the original parts precision and surface roughness of the film; soft ,high elasticity ,can reduce the fatigue strength of the raw material base at the same time. The binding force, chromic acid anodizing film and organic matter is good, good paint bottom, therefore, the plane structure of many are in need of chromic acid anodizing treatment. This paper introduces the aluminum alloy chromic acid anodizing pretreatment, hung, degreasing, cleaning, deoxidization, anodizing, sealing process, to focus on each step of the analysis and comparison, so as to find out the best anodizing process.
出处
《山东化工》
CAS
2016年第5期26-28,共3页
Shandong Chemical Industry
关键词
铝合金
脱脂
铬酸阳极化
封闭处理
耐蚀性
aluminum alloy
degrease
chromic acid anodizing
sealing
corrosion resistance
