Aluminum products, according to the information reported worldwide annually produce about 3.5 million tons of aluminum ash, while only about half of treated processed into aluminum, aluminum recovery rate also increased from 30 percent a few decades ago to the current 65%. This chemical reaction is exothermic, so after skimming to avoid wherein the aluminum oxide and into the flue gas, the job must be quickly cooled aluminum gray. Melting aluminum scrap is meant to produce more aluminum gray, UAV precision metal CNC machining, usually 10% of the aluminum loss, processing in India is the loss of 12 tons of aluminum, precision CNC lathe machining parts a year, while in the electrolysis aluminum aluminum production losses of 1-2% annual loss of 1.5 million tons. Therefore, countries such as India recovered from aluminum in the aluminum becomes increasingly important. India is expanding scrap recycling industry, its production capacity over 1.2 million tons / year, while aluminum production capacity in India is about 100 tons / year. Indian scrap recycling capacity and electrolytic aluminum production capacity in the next five years will double. Aluminum products was practical formula of 15% sulfuric acid; oxalic acid 1%; bath temperature of 26 ~ 33 ℃; current density of 0.8 to 1 amps / square decimeter; anodized, CNC lathes machining, the effect is good. But the test process, we also observed that when oxalate content exceeds 1.5%, although not yet produced a pale yellow film oxalate oxidase enough to affect the appearance of a dyeing performance can be, but, after repeated printing dyeing, the resulting hard on dyeing phenomenon. It requires several stained decorative oxide film, a mixed acid oxidation in oxalic acid content should not be too high. CNC lathe 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!