When conducting the Hull cell test with acid copper plating brightener, how should it be stirred? What benefits can stirring bring? Why does improper stirring lead to a decline in the quality of the coating? Why is it so difficult to clean the Hull tank with air stirring thoroughly after each use? All the answers will be given to you in this issue's articles.
Although stirring can reduce concentration polarization and increase the allowable cathode current density, it will cause the bright leveling range to shift towards the high end, resulting in a decrease in bright leveling in the low current density area. The brightness and flatness of the coating vary with different stirring intensities.
It is not recommended to use the Hull tank with air stirring for air stirring. Why? The reason lies in the fact that in this type of integral injection molding shell groove, the pore diameters are large and sparsely distributed, which causes uneven stirring of the test piece. As a result, the coating is prone to vertical strips of varying brightness, which may lead to misjudgment of the test results by the technicians in the electroplating factory.
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Guangdong Bigely Technology Co., Ltd. ,founded in 2003, is a high-tech enterprise integrating R & D，production, sales and service, specializing in the production of electroplating additives. As a famous electroplating additives source manufacturer in China, Bigely has over 20 years' experience in electroplating additives production and own production base of 5000 square meters. We can produce 15,000 tons of electroplating additives every year, which can fully meet the needs of customers.
If you need our high-quality electroplating additives, please contact us. We can provide you samples for test, and also provide a series of services.
