Passivation agent / aluminum chrome-free film former chemical oxidation / no chrome colored film passivation

Foshan Decheng Hezhong Chemical Co., Ltd. Address: Nanzhuang purple violet Village Road, Foshan City, 23 Phone: 0757-82012410 Fax: 0757-82012430 Website: www.dchz.cn E-mail: fsdchz@163.com QQ: 320013115 / 502581623 Ali Want: fsdchz DCHZ-402 aluminum chrome-colored film is a chemical oxidant, characterized DCHZ-402 aluminum alloy chromium-colored film and chemical oxidant is an environmentally friendly chromium-free, lead-free, mercury-free, nitrite salt, clear, colorless or pale red liquid, its conversion coating color is light yellow to reddish brown, film and painting its good adhesion. Second, the use of chemical oxidation for aluminum alloys, aluminum and its alloys before processing, especially for underlying organic coating with good corrosion resistance and adhesion, and is suitable for cast aluminum alloys. Third, technical indicators and preparation methods DCHZ-402 10-20% (by volume) PH value of 2.0-3.3 Temperature 16-40 ℃ Time 2-5 minutes or reddish color of the solution colorless transparent liquid conductivity 4.40-10.00ms / cm four The solution control just controlling the conductivity can be a good control bath, electric conductivity is low, additional DCHZ-402 concentrate, can improve conductivity. Fifth, the equipment oxidation processing tank plastic tank