Stainless steel passivation liquid two-in-one pickling liquid formula, excellent effect, low price, fast cleaning speed, high efficiency and no pollution. Stainless steel white molten steel - silver-white passivation treatment on the surface of austenitic stainless steel, stainless steel washing molten steel has dual functions of pickling and passivation; the operation process is simpler and the cost is low, only need to be soaked at room temperature and used until the surface of the product shows a uniform silver-white color. Yes; for cleaning small and complex stainless steel workpieces
1. Main use:
It is a three-in-one comprehensive product of pickling, polishing and passivation, which can remove the extremely thin chromium-poor metal on the surface at the beginning of passivation. When the oxide scale is removed, the entire reaction is transformed into a passivation process, resulting in effective passivation protection. It can effectively remove all kinds of oil stains, oxide skin, welding spots and rust on the surface of stainless steel, and form a uniform bright silver-white passivation film. Anhui Hongchang greatly improves the appearance and corrosion resistance of the workpiece.
Second, the scope of application:
This product is suitable for the surface silver-white passivation of austenitic stainless steel such as 201, 202, 304, 316 and 304L, especially for large and complex stainless steel workpieces.
3. Features and advantages:
1. Integrate pickling, polishing and passivation; make the process simpler and cost less;
2. This product does not contain nitric acid in the traditional formula, so as to eradicate the pollution caused by nitrogen oxides generated in the pickling process and improve the workpiece environment; at the same time, excellent corrosion inhibitors are added, which will not bring the harm of hydrogen embrittlement;
3. The potential of the workpiece treated by this product can reach more than 800 millivolts, which greatly improves the corrosion resistance.
4. How to use
1. According to the processing conditions of the workpiece, first remove oil and degreasing; first remove wax for mechanical polishing parts.
2. Soak in passivation solution, the recommended soaking time is 3~10 minutes, users can control the time according to the color and brightness they need.
3. Rinse with clean water (do not use sewage or natural water) to clean the surface passivation of the workpiece
4. Neutralize (PH9~12) sodium hydroxide water for 5 minutes (for workpieces with simple structure without holes or threads, it can be omitted as appropriate)
5. Finally, soak and rinse with clean water (purified water or filter-filtered water) with a chloride ion content of less than 25PPM for 1 to 3 minutes.
6. Drying. The oven is about 15 minutes, 100 degrees. The inspection standard is that there is no water on the surface.
5. Effect
1. The oxidized workpiece can be descaled, and the workpiece is bright silver-white, without changing the size of the workpiece and improving the surface quality.
2. To improve the corrosion resistance of stainless steel, the breakdown potential of the passivation film can be increased by several hundred millivolts compared with the untreated one, and it can pass the "blue dot method" test uniformly stipulated by the state, and no blue dot will appear in 30 seconds.
3.300 series stainless steel material conforms to Japanese industrial standard test more than 300 hours NNS
6. Performance
The passivation solution does not contain harmful substances and conforms to European and American testing certification.
