Why are there chloride ions in the plating solution when using alkaline galvanizing brightener?

Why are there chloride ions in the plating solution when using alkaline galvanizing brightener?

Tue Dec 24 14:05:56 CST 2024

When we use alkaline galvanizing brighteners, why is the plating solution contaminated with chloride ions? In this issue, we will analyze how chlorine ions come about.

①Inadequate cleaning before plating

This is its main introduction pathway. Strong corrosion and activation of iron and steel parts before plating, so far, most of the hydrochloric acid is still used, and industrialized production, often cleaning before plating is not thorough, not to mention the flow of pure water cleaning. As a result, not only to the plating solution into the introduction of divalent iron ions, but also a large number of chloride ions.

② High chlorine content in city tap water

City water in the treatment, pretreatment for the removal of suspended solids, often add alkaline aluminum chloride and so on for flocculation; and in the elimination of du and often use chlorine disinfectants and so on to kill E. coli and so on. 

Therefore, when customers use Bigely alkaline galvanizing brightener BZ-518, our engineers teach them how to deal with it when there is an excess of chloride ions in the plating solution, so as to ensure that the plating layer is of normal quality and can be delivered to the downstream customers in time.

About us

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.

Our products have passed ISO9001, ISO14001, OHSAS18001 management system certification and the test of Swiss SGS company and we also possess 2 national invention patents and 6 utility model patents.

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.