It is determined to develop a new environmentally friendly chemical polishing technology

This neutral system has machining bushing good adaptability to aluminum alloys, and can form a good film on a variety of aluminum alloys such as rust-proof aluminum and wrought aluminum.Electrochemical surface strengthening treatment of aluminum castings

It is determined to develop a new environmentally friendly chemical polishing technology using phosphoric acid monosulfuric acid as the base liquid, which will achieve zero emissions of NOx and overcome the quality defects of similar technologies in the past. The hub of the new technology is to add some special effects to the base liquid. Compounds are used to replace nitric acid. To this end, the tri-acid chemical polishing process of aluminum needs to be analyzed first, especially the role of nitric acid. The main role of nitric acid in aluminum chemical polishing is to attack by the point and improve the polishing brightness.

Combined with pure phosphoric acid The chemical polishing test in monosulfuric acid thinks that the special substance added in phosphoric acid monosulfuric acid should be able to erode according to the point and slow down the overall erosion, and at the same time it must have a good leveling and bright effectEnvironmentally friendly chemical polishing of aluminum castingsThe research of alkaline polishing solution system was carried out, and the effects of corrosion inhibitor and viscosity agent on the polishing effect were compared.

The alkaline solution system with good polishing effect of zinc-aluminum die casting was successfully obtained, and the operating temperature was reduced for the first time. Additives that extend the service life of the solution and improve the polishing effect at the same time. The experimental results show that adding appropriate additives to the NaOH solution can produce a good polishing effect. Exploratory experiments have also found that: NaOH solution with glucose is carried out under certain prerequisites After DC constant pressure electrolytic polishing, the surface reflectance of aluminum can reach 90%, but because of the undisturbed factors in the experiment, further research is needed. The feasibility of using DC pulse electrolytic polishing to polish aluminum under alkaline conditions was explored The results show that the leveling effect of DC constant pressure electrolytic polishing can be achieved by using the pulse electrolytic polishing method, but its leveling speed is slow.