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Metal finishing Q&As since 1989
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Pickled brass components only look good for a couple of weeks
We are doing chromic acid pickling for our forged and machined products, which gives a good colour and brightness. Unfortunately this good appearance does not last beyond a couple of weeks after which the parts look dull and colour is also a faded out yellow. Please suggest a process other than lacquer that will retain the bright colour for a long time.
R.ThiagarajanBrass forge & machine shop - Chennai, TamilNadu, India
2003
Use 20 gms per lit of Sodium Dichromate followed by a DM Water rinse before lacquer.
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Khozem Vahaanwala
Saify Ind
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Bengaluru, Karnataka, India
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2003
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