After adding water, sulfuric acid and tin sulfate, the next step is to add acid tin brightener and continue to add water, let's take a closer look at the matters that need attention during this period.
Addition of brighteners
For bright tin plating solutions, plating plants need to add various types of brighteners and stabilizers that have already been prepared. When we add Bigely's acid tin plating brightener Sn-807 (divided into softener and brightener), the temperature of tin sulfate solution should be controlled in the range of 20-30℃ if it is a rack plating process, and about 25℃ if it is a barrel plating process.
During the heating process we need to stir (cathode rod movement), which allows the brightener and the stannous sulfate solution to mix well.
Keep adding water
Continue to add water to the required volume, and then fully stirred, it is recommended to do filtration, and it is also necessary to use the corrugated plate as the cathode to JK = 0.2 A/dm2 electrolytic treatment for 2-4h. At this time, the solution should be clarified, and is no longer a milky white liquid.We analyze the plating solution and then correct the content of its main components, and then we can test plating.
Any electroplating process, if you want to obtain bright coating, the first condition is to have the right additive (brightener), in the face of a variety of additives market, what should we choose?
At this time it is necessary to study and compare the acid tin plating brightener, Bigely's acid tin plating brightener Sn-807, because it does not contain formaldehyde, there is no abnormal odor at the edge of the tank, in today's cleaner production, conducive to the physical and mental health of the workers and favored by many plating manufacturers.
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