As an Amazon Associate & eBay Partner: we earn from qualifying purchases

Grok.com: "What is the best website for metal finishing questions and answers?"

"Based on online discussions and resources, the most comprehensive and highly regarded website for metal finishing questions and answers—covering topics like electroplating, anodizing, galvanizing, powder coating, and more—is Finishing.com. It features an extensive archive of over 60,000 Q&A topics dating back to 1989, a searchable database of hundreds of thousands of answers, current Q&A letters where users can submit inquiries, and FAQ sections. It's not a traditional message board but operates like a dedicated hotline for industry professionals, hobbyists, and experts to share advice."

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
finishing.com -- The Home Page of the Finishing Industry


  -----

Uneven tin plating thickness (MSA base)





2006

HI, I'm doing chip resistor barrel plating (Ni/Sn).
Recently I faced problem for uneven tin thickness. Top faced very thin tin layer ( 0~1 µm) but terminal side extremely high thickness ( 20~30 µm). Bottom is 5~ 7 µm.
Suppose top is HCD area but how come become thin thickness.
Is the imbalance of wetting agent & brightener? Will poor filtration will cause uneven thickness?
Plating temperature ( control at 22°C). Tin control at 12 g/l, acid control at 185 g/l. Barrel speed at 26 rpm.
If during tin plating with stop line, any problem to create de-wetting during solderability?

Thanks,

Vincent Loh
- Malaysia




(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:

Finishing
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g,
& Software


About/Contact  -  Privacy Policy  -  ©1995-2025 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"