The surface technology of aluminum alloy die casting is rich and varied, and the surface effect of aluminum alloy die casting is very beautiful, the surface effect is very beautiful, let's take a look at the other two polishing technology of aluminum alloy die casting.
1. Alkaline electrolytic polishing process for aluminum alloy die casting
The alkaline polishing solution system was studied, and the effects of corrosion inhibitors and viscosity agents on the polishing effect were compared.The results show that adding appropriate additives to NaOH solution can produce good polishing effect.Exploratory experiments also showed that the reflectivity of aluminum surface could reach 90% after using NaOH solution of glucose under certain conditions. However, due to unstable factors in the experiment, further studies are needed.The feasibility of using pulse electropolishing method to polish aluminum under alkaline conditions was explored. The results showed that the leveling effect of constant voltage electropolishing could be achieved by pulse electropolishing method, but the leveling speed was slow.
2. aluminum alloy die casting and aluminum alloy environmentally friendly chemical polishing
It is determined to develop a new environment-friendly chemical polishing technology based on phosphoric acid and sulfuric acid. This technology should achieve zero emission of NOx and overcome the quality defects of previous similar technologies.The key to the new technology is to replace nitric acid with compounds with special functions in the base solution.Therefore, it is necessary to analyze the triacidification polishing process of aluminum, especially the effect of nitric acid.The main function of nitric acid in chemical polishing of aluminum is to inhibit spot corrosion and improve the polishing brightness.Combined with the chemical polishing test of pure phospho-sulfuric acid, it is concluded that the special substance added in phospho-sulfuric acid should be able to inhibit the spot corrosion, slow down the overall corrosion, and at the same time have a good leveling and shining effect.
These are the two polishing processes for aluminum alloy die castings. If you have questions about the above content or need to know more about it, please visit our official website or contact us directly.
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