Aluminum surface treatment method for surface passivation method was divided into two hydrated closed closed method of high pressure steam and boiling water sealing method. The effect of high-pressure steam closed closed better than boiling water, primarily reflecting a closed aluminum luggage rack processing speed without affecting the pH value, after the closure of the oxide film, good corrosion resistance, and closed stable quality aluminum alloy shell processing, especially does not appear in a closed dyeing color oxide film flow and, therefore, particularly suitable for closed treatment dyeing oxide film. aluminum surface treatment of surface passivation method) ① high pressure steam process specifications enclosed Enclosed process specifications are as follows. Steam pressure 1 ~ 3 × 105Pa steam temperature 100 ~ 110 ℃ time 20 ~ 30min Handling Precautions: steam temperature is not too high, or easy to make the hardness and wear resistance of the oxide film is reduced. Processing computer stand TV stand, machining, aluminum products provided by Cavey Cavey Aluminum Products Co., Dongguan City. Aluminum Products Co., Ltd., Dongguan City, Cavey (kaiwei.bcvbc.com) strong, credible, in Dongguan, Guangdong and other hardware accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving Cavey innovative ideas will lead to aluminum products and you hand into the brilliant, for a better future!