Enclosed low aluminum closed at room temperature or cold, also known as closed, the aluminum industry in recent years, the most widely used method of closure. It uses a low temperature closed Ni. F solution system, the reaction mechanism is very complex, but closed with a metal salt hydrolysis method has some similarities, CNC, the presence of Al: hydration 03 and Ni (OH): precipitation dual role precipitation, CNC machining, just because F The presence of a closed reaction process can be achieved at low temperatures. Low temperature blocking solution follows the basic formula and process specifications: Ni2 + content / (g / L) 1.O ~ 1.8F a content / (g / L) 0.3 ~ 0.8pH value of 5.5 to 6.5 temperature / ℃ 25 ~ 35 times every 1 / μm thick oxide film about 1min aluminum products to do the science and technology information exchange. Aluminum products industry belong to their respective departments, aviation, copper CNC lathe processing, light industry, stainless steel CNC turning, building materials have to strengthen the scientific and technological information exchange, as soon as the new technology at home and abroad to the new IT facility into trial production, to improve the entire aluminum industry, the level of technology to improve the quality of aluminum products is essential. In the specific application to be applied flexibly. I plant (state-run Yangjiang Knife Factory) has been in use produce sulfuric acid oxidation to produce several staining patterns with a variety of knife handle aluminum sheet. In 1973, because of the freeze damage, we are in the oxidation tank with 1300 liters of sulfuric acid - were pilot production of oxalic acid mixed acid. Precision parts CNC lathes | CNC | 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!