引言 铝及其合金被广泛应用于汽车、飞机、造船、机电、家用电器等工业,并在仪器仪表、制笔、打火机、工艺美术品和化妆品、包装件等轻工产品方面得到日益广泛的应用,因此铝及其合金的表面处理具有重要的实际意义。 铝表面的化学处理大体分为3个阶段。首先对铝制品表面进行砂化处理,传统的砂化工艺处理大型机械比较方便,对比较精密的仪器、比较精致的装饰品则显 Introduction Aluminum and its alloys are widely used in industries such as automobiles, aircraft, shipbuilding, mechanical and electrical appliances, household appliances, etc., and are increasingly used in light industrial products such as instruments, pens, lighters, arts and crafts and cosmetics, , So the aluminum and its alloy surface treatment has important practical significance. The chemical treatment of aluminum surface can be divided into three stages. First, the surface of aluminum products, sand treatment, the traditional sand processing large machinery more convenient, more sophisticated equipment, more sophisticated decorations were significantly