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Development of cross technology
ATOTECH patented product Crossay is a protective layer produced by details and fillers. After the parts are passivated in this pot, a layer is deposited by soaking and cooling to improve the corrosion resistance, so that the main A9t test can achieve no self-rust for 200 h and no red rust for 4-00-600 h, and become French Peugeot cars B 154 100, B15410/. The gap P of the memory film produces a new structure through the silicon oxide of the passivation film, which improves the sealing performance, and its compact structure prevents the substrate of the part from being corroded by air. As shown in fig. 5). Therefore, corrosiveness has several parents.
Key points:
(1) provides good corrosion resistance. The blue passivation film can withstand salt deficiency test, and the color passivation film, green passivation film and black passivation film can also be aged for more than 200 hours. f！ Remember.
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(:3) Same as organic resin, there will be no "sagging N" phenomenon.
(4) The stable use of plating solution for a short time can produce magical effect.
(5) It does not contain Cr6+.
(6) It is easy to peel and repair with alkaline solution.
(7) Suitable for hanging plating and barrel plating.
The automatic line operation is divided into two stages: pre-electroplating, water washing, basket loading, and then COROSIL coating treatment. Solution operating temperature 18 island, 25℃, slow stirring, soaking time 15-30 So. Because the COROSIL coating itself is not an organic resin, it is not simply attached to the passivation film, but reacts with the zither layer and the passivation film. Selection of corrosive coating
Selection and passivation must match, except for blue passivation, and the amount of money can be used, and its percentage must match the specified product 3.
The treatment of corrosion wastewater is very simple. Dilute the etching solution about 5 times, add 20%H2 SO to adjust the pH value to about1.5 "'2, then add nah SO 3, and then add NaCl and NaOH for precipitation and separation.
Far less headache than spraying. There are many manufacturers using CorrosH in France, including hanging plating and barrel plating.
Yes, blue extinction, color extinction, green extinction and black tun are all used, blue extinction is the least, and most of them use color tun. Because of its simple process, the ancient CorrosH process specially designed for Peugeot and Citroen cars is being introduced into the China market, which has caused great development in the automobile manufacturing industry.