Anti-rust treating agent for nickel-plated battery steel shell and using method thereof
A battery steel shell, anti-rust treatment technology, applied in the direction of metal material coating process, etc., to achieve the effect of reducing processing time, good corrosion resistance, and enhancing anti-corrosion performance
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Embodiment 1
[0049] Use the antirust agent of the present invention to prepare an antirust film on the surface of a pre-plated battery steel case:
[0050] a. Chemically degrease the steel shell of the battery, the degreasing liquid is 70g / L NaOH, 40g / L NaOH 2 CO 3 , 25g / L Na 3 PO 4 , 10g / L of Na 2 SiO 3 mixture. Soak the steel case of the battery in the degreasing solution and heat it to 80-90°C, take it out after 5-10 minutes, and observe whether there are small water droplets on the surface during washing, if so, continue to degrease. After degreasing, rinse with tap water and rinse with deionized water.
[0051] b. Immerse the battery steel case treated in step a in an activation solution of 1-2% oxalic acid, treat at room temperature for 1-2 minutes, and rinse with deionized water after the reaction is completed.
[0052] c. placing the battery steel case treated in step b in the antirust agent of the present invention, the composition of the antirust agent is 0.5% of phytic ac...
Embodiment 2
[0056] After the same pretreatment as in Example 1, the battery steel case is placed in the treatment agent of the present invention, and the composition of the treatment agent is 1.0% of phytic acid, 1.0% of sodium tungstate, 0.2% of sodium chlorate, and 0.2% of sodium citrate , benzotriazole 0.2%, sodium dodecylbenzene sulfonate 0.05%, polyvinyl alcohol 0.5%, the rest is water, adjust the pH value to 5 with triethanolamine, the treatment temperature is 40 ° C, and the treatment time is 10 minutes. A layer of colorless and transparent corrosion-resistant film is formed on the surface of the battery steel case treated above.
[0057] The steel case of the battery treated with the formula of this example was subjected to a high temperature and high humidity test. After 10 days of high temperature and high humidity test, the corrosion resistance of this example reached level 9.
Embodiment 3
[0059] After the same pretreatment of the steel case of the battery as in Example 1, place it in the treatment agent of the present invention, the composition of the treatment agent is phytic acid 1.5%, sodium molybdate 0.5%, sodium tungstate 0.5%, sodium nitrate 0.2%, Sodium tartrate 0.2%, rosin imidazoline 0.2%, sodium dodecylbenzenesulfonate 0.05%, polyvinyl alcohol 1.0%, the rest is water, adjust the pH value to 5 with triethanolamine, the treatment temperature is 40°C, and the treatment time is 20 minute. A layer of colorless and transparent corrosion-resistant film is formed on the surface of the battery steel case treated above.
[0060] The steel case of the battery treated with the formula of this example was subjected to a high temperature and high humidity test. After 10 days of high temperature and high humidity test, the corrosion resistance of this example reached level 9.
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