Mr. Rogers: "Look for the Helpers. You will always find people who are helping."
As an Amazon Associate & eBay Partner: we earn from qualifying purchases

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

-----

Step-like defect in LCD area of tin plating

I'M DOING ACID TIN PLATING. ITS CAPACITY 3000 LTS. WE ARE DOING EXACTLY .25 DM2 AREA COMPONENT. IN THIS COMPONENT LCD LIKE A STEP PLATING AND TARNISH AND WHITE MARK WE ARE GETTING

RAMAN CHANDRAN
SUPERVISOR - Bangalore, India
December 22, 2008

Raman,
There are a few things that can cause step plating. Low tin metal concentration, sulfuric acid too low, tin starter low (if applicable). Another possible cause is organic contamination. Bring the bath up to spec with a good chemical analysis. If the problem still persists, put in two or three sets of carbon cartridges through your filter system.

Mark Baker
Process Engineer - Syracuse, NY, USA
December 27, 2008

(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: