Home /
T.O.C.
FAQs
 
Good
Books
Ref.
Libr.
Advertise
Here
Help
Wanted
Current
Q&A's
Search 🔍
the Site

Chime right in! (no registration req'd)

-----

"Reflective pre-finish needed for stamped parts"





February 25, 2010

I have an 0.075" stamped part that needs to have a reflective or bright finish that won't fade over time. This application uses an infrared sensor to detect the movement of a gear train. The sensor works most reliably with a reflective surface below the gear. I would prefer a coating that could be provided pre-finished in the coil to reduce costs by eliminating secondary operations. Any suggestions would be greatly appreciated.

Kevin Kezar
Product Design Engineer - New Paris, Indiana, USA
^


February 26, 2010

Hi, Kevin. What is the substrate . . . mild steel? Nickel plating is corrosion resistant, durable, reasonably reflective, and available. There are better reflective surfaces like chrome, or rhodium, but more expensive and less available.

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
^


First of two simultaneous responses -- March 1, 2010

If you are going to do anything but shear the material, it would have to be fairly thin and ductile. Also, radii would need to be quite generous or the plate will crack or chip or peel.
If I were to guess, I would try an electroless nickel that is ductile. Optimum is a solution designed for this and maintained in very tight tolerances. It can be tweaked to provide a very bright deposit, but it would need to be on polished or very smooth metal because the thickness is minimal.
Somewhere, there is an optimum, but it might not be that much cheaper than a secondary operation. Lots of homework.

James Watts
- Navarre, Florida
^


Second of two simultaneous responses -- March 2, 2010

Yes, the base material is mild steel.

Kevin Kezar
- New Paris, Indiana
^

none
finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start 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    -    ©1995-2021 finishing.com, Pine Beach, New Jersey, USA