Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

finishing.com -- The Home Page of the Finishing Industry

The authoritative public forum
for Metal Finishing since 1989
-----

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.Thiagarajan
Brass forge & machine shop - Chennai, TamilNadu, India
2003

Use 20 gms per lit of Sodium Dichromate followed by a DM Water rinse before lacquer.

Khozem Vahaanwala
Saify Ind

Bengaluru, Karnataka, India

2003

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: