No registration or passwords; no pop-up ads -- just aloha, fun, & answers.
(as an eBay Partner & Amazon Affiliate earns from qualifying purchases).
Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Advertise
 
Help
Wanted
Current
Q&A's
Site 🔍
Search
pub  Where the
world gathers for metal finishing
Q&As since 1989



-----

Nickel plating that could pass one (1) cycle CASS Test?





2002

Our previous practice of corrosion resistance test for our purchased Nickel plated screw was 24 Hr SST, which gave us fair result.

Recently, the requirement of this test has been changed (upgraded?) to one cycle CASS Test. Thus, we experience corrosion quality problem for these.

I'd like to hear yours experience and ideas that could overcome this. (post-treatment, passivation?)

p/s: Cr plating after Ni is unlikely, appearance of the Ni finishing is required.

Regards

chee hong lee
Chee Hong, Lee
- Singapore



There is but nothing in passivation or lacquering that will work on screws. The only way to meet the spec is to go for duplex nickel, with an 80% thickness of sulfur free layer and 20% bright layer.

Khozem Vahaanwala
Khozem Vahaanwala
Saify Ind
supporting advertiser
Bengaluru, Karnataka, India
saify logo
2002



I'm testing on triplex nickel plating. Additional a thin high-sulfur nickel between the semi and bright nickel. Have yet to know the outcome.

chee hong lee
Chee Hong, Lee
- Singapore
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:

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


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"