Suitable for a variety of profiles of aluminum,magnesium alloy parts dipping, spraying passivation
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Brief Introduction |
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Suitable for a variety of profiles of aluminum,magnesium alloy parts dipping, spraying passivation. JH-8245 is low chromium product,the color of film is light yellow to golden rainbow film.Can use together with acid aluminum parts cleaning agent,simplifying working process,save investment, improve efficiency. |
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Preparation of tank liquid |
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Add three-quarters of cold water into working tank,add 10kg JH-8245 for each 1000kg tank liquid. |
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control parameter |
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Appearance Orange and red liquid Density 1.1-1.2 PH 1.7-2.2 Temperature Room Temperature-40 Processing time 3-10min |
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process flow |
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Degreasing - washing - washing - film forming - washing - washing - drying |
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Preparation of tank liquid |
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1) After working for some time, the efficiency will be decreased. Then should add JH-8245 film forming agent 2)When the tank liquid using time is too long, Al3 +and too much impurity ions, should consider replacing the working fluid |
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test method |
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Density Take a certain amount of sample, keeping it at 25 , the density was measured with a hydrometer. Free acid 1) pipette take 10 ml liquid into the Erlenmeyer flask 2) drops 3 to 4 drops of bromophenol blue indicator; 3) while swinging with 0.1N sodium hydroxide to color from yellow to blue; 4) the number of 0.1N sodium hydroxide used is free acidity.
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Attention
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. Wear protective glasses, rubber gloves and wear protective clothing during processing. Avoid direct contact with eyes, skin, clothing and equipment. Get medical attention if accident happen. |
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packing |
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25kg/barrel |
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guarantee period |
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One year |
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wastewater treatment |
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Tank liquid is acidic, and contain hexavalent chromium, the waste should send to waste water treatment statio. |
