建筑铝型材宽温快速阳极氧化节能工艺及应用

为解决建筑铝型材传统阳极氧化工艺能耗过大的问题,进行了宽温阳极氧化工艺试验,研究了添加剂GYK-1含量对阳极氧化温度上限、阳极氧化电压及成膜速度的影响,同时探索了Al³⁺ 浓度对阳极氧化温度上限的影响,得到最佳宽温阳极氧化工艺条件为: H₂SO₄浓度160～180 g/L,添加剂GYK-1用量50 g/L,Al³⁺浓度20～25 g/L,氧化温度35±2 ℃,电流密度150 A/m²,氧化时间17 min。该节能工艺成功应用于生产,在保证氧化膜达到国家标准情况下,阳极氧化工艺温度上限从22 ℃提高到33 ℃,成膜速度提高20%,电压降低10%,大幅度降低能耗的同时提高了生产效率,为铝型材厂节能生产提供了有效途径。

Energy-Efficient Anodizing Process with Wide Temperature Range for Architectural Aluminum Profile

In order to solve the problem of excessive energy consumption in the traditional anodizing process for architectural aluminum profiles, an experiment of anodizing process with wide temperature range was carried out, and the influence of the content of the additive GYK-1 on the upper limit of anodizing temperature, anodizing voltage, and film formation speed was all explored. Besides, the effect of Al³⁺ concentration on the upper limit of anodizing temperature was also investigated. Based on the studies, the optimal technique conditions for the anodizing process with wide temperature range are determined as follows: H₂SO₄ concentration of 160～180 g/L, additive GYK-1 dosage of 50 g/L, Al³⁺ concentration of 20～25 g/L, the oxidation temperature at 35±2 ℃, the current density of 150 A/m² and the oxidation time of 17 min. This energy-efficient process has been successfully applied to production. It is shown that this processing technique can increase the upper limit of the anodizing temperature from 22 ℃ to 33 ℃, increase the film formation speed by 20% and reduce the voltage by 10%, which, in the meantime, can ensure the oxide film up to the national standard. It can finally greatly reduce energy consumption, but also improve production efficiency, thus providing an effective way for aluminum profile plants in terms of energy-efficient production.