1、Aluminum Phosphating
The effects of accelerant and fluoride on the Parkerizing process were studied in detail by using SEM, XRD, potential time curve and the change of membrane. The study shows that the nitric acid has a good water-soluble, low dosage, and the characteristics of rapid film former, which is an effective accelerant for aluminum Parkerizing, and fluoride can promote the film, increase membrane weight and refine grain.
2、Aluminium alkaline electrolysis polishing process
The research of the alkaline polishing solution was carried out, compared with the effect of the inhibitor, viscosity, and so on. For the first time, it has been able to reduce the operating temperature, prolong the life of the solution, and also improve the polishing effect. The feasibility of polishing the aluminum in the alkaline condition by using the DC pulse electrolysis method can reach the smooth effect of the polishing, but the speed is slower.
3、environmental protection chemical polishing of aluminum and aluminum alloy
The key to the development of the new technology of environmental-friendly chemical polishing with phosphate and sulfuric acid is to replace nitric acid by adding some special compounds in the base liquid. First of all, it is necessary to analyze the chemical polishing process of aluminum, especially to study the effect of nitric acid. The main function of nitric acid in aluminum chemical polishing is to suppress the corrosion and improve the polishing brightness. Combined with a chemical polishing test in pure phosphoric acid and sulfuric acid, a special substance added to phosphoric acid and sulfuric acid should be able to inhibit corrosion and reduce total corrosion. At the same time, it must have a better leveling and light effect.
4、Electrochemical surface enhancement of aluminum and aluminum alloy
The process, performance, structure, composition and structure of the aluminum and aluminum alloy in the neutral system were discussed, and the process and mechanism of the film were discussed. The neutral system has a good adaptability to the aluminum alloy, and it can be well made in various series of aluminum alloys, such as rust, aluminum and aluminum.
Post time: Mar-30-2018