Process Monitoring and Control of Aluminum Anodizing Solutions by IonChromatography

摘要

Process monitoring and control of sulfuric and oxalic acids in aluminum anodizingsolutions are necessary to produce high-quality coatings for the metal finishing industry efficiently. These high-quality coatings significantly increase resistance to corrosion, wear, and abrasion. The production of military armament system parts requires narrow aluminum anodizing solution tolerances, which increases the need for process monitoring and control. Current instrumental analysis methods do not provide acceptable 95% confidence level precisions for these narrow operating tolerance aluminum anodizing solutions. This report describes an improved ion chromatographical method to provide acceptable process monitoring and statistical control of narrow operating tolerance aluminum anodizing solutions required to produce high-quality coatings. The resultant means and improved 95% confident precisions for typical aluminum anodizing