Summary for wire surface activation Discussion
Wire surface activation before electrogalvanization is the topic of this question from Radovan Maraz, who says his shop pickles steel wire in HCl and then uses a short, non-electrolytic H2SO4 bath before electrogalvanizing. He asks whether a stronger sulfuric acid concentration, higher temperature, and even immersing two electrodes in the sulfuric acid and connecting them to a rectifier would improve activation. The excerpt provided contains only the question and no posted answers, so there is no consensus or named advice to summarize from the thread itself. The practical issue raised is whether chemical activation alone is sufficient after pickling, or whether an electrically assisted acid treatment would produce a better surface for electrogalvanizing. Because no replies are shown, the page mainly documents the process question rather than a resolved recommendation.
Q. Dears,
I would like to ask what do you use for the steel wire surface activation before electrogalvanization process? after pickling in HCl we use a short bath of H2SO4 for the surace activation before the electrogalvanization process. The activation is made without electricity. I heard that with the higher concentration of H2SO4, higher temperature and with the two electrodes immersed in the sulfuric acid solution connected to the rectifier, the process of activation is much better. Do you have any good advise for me?
Radovan Maraz
– Slovakia
April 28, 2012