Aluminum products people want to research trial does not produce "Dragon" chromium-free chemical polishing and electrolytic polishing process. Zhejiang Huangyan fluorescent chemical plant production of "aluminum-cured tobacco-free chemical polishing additive WXP", with the assistance of the environmental protection department in Beijing passed the appraisal. WXP Department additive for aluminum products factory in Dongguan phosphate, sulfuric shiny polishing agent solution, and both inhibit the action of acid mist. The process recipe is used: commercially pure phosphoric acid (specific gravity d = 1.7) 800 ml / liter; industrial grade sulfuric acid (specific gravity d = 1.84) 200 ml / liter; WXP of 2 ml / liter; temperature 95 ~ 120 ℃. The new distribution solution should be added to 3 grams per liter of aluminum. Because this recipe does not contain nitric acid, so they do not have a "Dragon" nuisance polishing; suppressing acid mist with good results. Aluminum products sulfuric acid, oxalic acid method, chromic acid oxidation process particularly sulfuric acid anodizing method almost every person in the surface treatment of aluminum products known nothing. These types of oxidation processes have their own characteristics and scope of application, such as oxalic acid method, we can achieve a thick oxide layer, the oxide film itself with some decorative color, but the high cost of this method, a large power consumption. Sulfuric acid oxide film transparent colorless, good color absorption properties of aluminum products plant in Yangjiang, with the electrolyte composition is simple and stable processing, easy process operation, low cost, it is more widely used. But the little sulfuric acid tank temperature control, heating up fast, often install refrigeration equipment, which has become a problem. In Japan, long ago developed the sulfuric acid - oxalic acid mixed acid oxidation, whichever is the longer, to avoid both the short and become the main oxidation bath in Japan. Our aluminum products plant Shenyang describes the use of a mixed acid oxidation technology, they recommend the formula is: 10 to 20% sulfuric acid; oxalic acid 1-2%; 10 to 20 volts DC voltage; anodizing. Shenzhen aluminum products processing plants | machining | Hongrun Hongrun by Dongguan Shijie Hardware Products Factory. Hongrun Dongguan Shijie Hardware Products Factory (dghrwj1688.1688.com) strong, credible, in Dongguan, Guangdong hardware accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hong Run and you work into the brilliant, for a better future!