What causes the coating to burn when using potassium chloride galvanizing brightener?

What causes the coating to burn when using potassium chloride galvanizing brightener?

Thu Mar 13 08:44:43 CST 2025

When using potassium chloride galvanizing brightener, the product is burnt now, how to deal with it? Recently we saw this inquiry, so we decided to write an article to do the answer.

There are a variety of reasons regarding burnt plating, one of which is a low pH buffer for the plating solution.

The pH buffer in the plating solution has two functions: one is to buffer the pH of the plating solution itself, and the other is to buffer the pH of the liquid layer at the cathode interface.

When the pH buffer content is low, the high cathode current density area due to its low background concentration, also due to the low concentration in the plating solution, the buffer to the cathode interface liquid layer diffusion rate decreases, and its buffering effect on the cathode interface liquid layer in the pH is poor, hydrogen ions slightly discharge, interface liquid layer in the pH rise faster, the plating layer will be more prone to scorch.

When we use potassium chloride galvanizing brightener, as the buffer of the plating solution - boric acid, it also has the role of refining the crystallization of the plating layer, improve the brightness of the plating layer, etc., so the engineers of Bigely suggest that boric acid is not only can not be lack of, and should be based on the conditions of the different liquid temperatures, as much as possible, add to the non-crystallization of precipitation, so that more appropriate. Many people do not pay attention to potassium chloride galvanizing solution of boric acid in time to add, so the plating quality can not be up grade.

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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.