磷酸阳极化工艺在航空铝合金胶接领域应用进展

对比介绍了金属胶接常用表面处理工艺的特点及应用情况,着重讨论了PAA的工艺原理,并以国内航空制造企业典型PAA线为例,从装挂方式、碱清洗、脱氧处理、阳极化处理参数、水清洗等方面详细介绍了磷酸阳极化工艺生产线,分析了PAA工艺在实际生产应用过程中的控制重点,以期为航空铝合金表面磷酸阳极化技术的发展提供参考。最后提出实现PAA生产线全生命周期绿色环保节能的要求是国内学术界和产业界需共同攻关的难题。

Application Progress of Phosphoric Acid Anodization for Aluminum Alloy Bonding in Aviation Industry

The paper compared and introduced the characteristics and application of the surface treatment technology which is commonly used for metal bonding and emphatically discussed the process principle of PAA. With typical PAA line in domestic aviation manufacturing enterprises as an example, phosphoric acid anodizing process production line was introduced in detail from hanging method, alkali cleaning, solid processing, anodized parameters, such as water cleaning, key control points on application in the actual production process of PAA process were analyzed, in order to provide reference to the development of phosphoric acid anodizing technology for aviation aluminum alloy surface. Finally, it put forward that the realization of green environmental protection requirements of energy saving in the full life circle of PAA production line is a common research problem to be jointly solved by domestic academia and industry.