-- The Home Page of the Finishing Industry
23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing smiley
    no popups, no spam
on this site
current topics
topic 12295

Bright Spots On Satin Nickel Plating


Hi everybody,

We plate bathroom and kitchen faucets with pearl bright nickel and we use Enthone's "Pearlglazzusatz Elpelyt F". I have a big problem with this satin nickel process. After plating, on the surface of the parts some bright spots occur, these are look like tens of silver points.

I believe that it comes from the breakdown products of "Satine Brightener F". After the production period I filtered the bath solution completely from three serial connected filter system by using two "Siebec carbon type filter paper" on each filter plate.I made this operation two times by changing the filter papers but it didn't work.

Do you have any other opinion to solve these bright spots? If filtration is only solution which kind of filter system or method do you advice? Or are there any other opinion about this problem? Thank you for your help.



Dear Kareem,

Initially I also faced same problem during my technical backup service ,here is the following points you have to take care after carbon filtration.

1. stop filtration during working
2. check movement it should not be very fast
3. p.h should be 4.1-4.4
4. density of solution 33 baumé
5.vvv important when you add satinizer don't exceed more than 75 ml /1000 amps and mix this quantity of satinizer at least in 2 ltrs of dm water and beat it as we beat egg and after addition mix thoroughly your solution .
6. temp. 55 deg
7. add primary brightener or or additive no.1 or what ever your additives name at least 5-6 times of satinizer and also if black spots are there then add 50-75 ml more.

Hope these hints will be helpful for you all the best.

Qutubuddin Saify
- Dubai, U.A.E

This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Comment to THIS thread START a NEW threadView CURRENT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices

©1995-2018, Inc., Pine Beach, NJ   -   About   -  Privacy Policy
How Google uses data when you visit this site.