Trivalent chromium blue passivation aluminum die-casting aluminum blue passivation liquid HF-634

HF-634 aluminum trivalent chromium blue passivation I. Applications: HF-634 aluminum trivalent chromium blue passivation for aluminum and aluminum alloy, casting high-silicon aluminum oxide surface passivation of phosphate processing aids, a uniform layer of pale blue corrosion protective oxide film can be formed phosphate aluminum surface, this film pale blue, dark blue, the film has a corrosion resistance and anti-oxidation discoloration purpose, without affecting the electrical properties of the workpiece, but also electrophoresis supporting spray, paint spraying and other pre-treatment of the use of the product, after-treatment to improve adhesion substrate and coating to enhance corrosion preventive effect; simple product prices three environmental passivation solution, the temperature operation, process, use of cost low, long life, is aluminum anodizing of choice. It is widely used in various types of hardware accessories, auto parts, electrical engine housing and other industries. Second, the product advantages: 1, the product can be added separately with tank and use the same formulation, easy to operate, simple to manage, long life; 2, the product is environmentally friendly trivalent chromium passivation solution, through the EU ROHS certification, corrosion resistance strong resistance to neutral salt spray for 72 hours. Third, the operation process: aluminum degreasing decontamination after washing → washed clean → HF-634 aluminum trivalent chromium blue passivation immersion → washed clean → drying or spray paint, spray, electrophoresis. Fourth, the operating instructions: No. Item Usage Notes 1 HF-634 aluminum trivalent chromium blue passivation 1: 5 watered normal operating temperature -60 degrees 2 3 4 using the process of soaking the processing time 2-5 minutes 5 use plastic containers tank, PP / PVC groove stainless steel tank can be five, operation and maintenance: 1, the ratio of good preparation by operating the bath, can be used after stir bath, preferably water or tap water with a groove, not with groundwater; 2, the workpiece surface passivation solution before soaking degreasing should be clean and thoroughly cleaned and then immersed in water passivation solution. 3, the liquid used for a period of time should be timely additional safeguard, the number depending on the workload usually the amount of processing workpieces PH value change color and the bath may be, if not in the PH value 3.8-4.0 range, additional liquid adjustment safeguard, such as bath after a whole becomes very turbid, it is recommended to replace the bath. 4, the product is slightly acidic, please do the operation labor protection, environment ventilation. VI, packaging and storage: 25 kg / barrel, 1-year store it in a cool place.