No passwords, No popups, No cost
we earn from your eBay & Amazon purchases

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
curated with aloha by
ted_yosem
Ted Mooney, P.E. RET
- Pine Beach, NJ
finishing.com -- The Home Page of the Finishing Industry


  pub
  The authoritative public forum
  for Metal Finishing since 1989

-----

Coloring aluminum



 

Sir,

We are manufacturer of piston, I want to color aluminium in any color except silver.

Thanx.

Muhammd Idrees
- Pakistan



And your question is?

Marc Green
Marc Green
anodizer - Boise, Idaho
 


Hi sir,

I want to change the original color of aluminium metal (piston) what I should do . . . what composition of chemical should be used to change the color of Al. please tell me the most inexpensive way of coloring Aluminium . . . We are a manufacturer of Pistons.....

Take Care,

Idrees Aziz
- Lahore, Pakistan



 

Most inexpensive way to color aluminum:

Direct chemical coloring:

Brown to black color:
potassium permanganate this on eBay or Amazon [affil links] .......10 gm
copper nitrate this on eBay or Amazon [affil links] ...............25 gm
nitric acid(38 Be)...........4 gm
water........................1 lit
Hot immersion(80-100 C)!5 min=light brown,15 min =dark brown,30 min=black Golden yellow color: potassium permanganate......20 gm.water 1lit Hot immersion(8o C)!You can add 5 gm copper sulphate this on eBay or Amazon [affil links] for bronze color!

Red color:
potassium sulfide.......25 gm
o,3 gm potassium bichromate
alizarine................ 1 gm
water....................1 lit

Good luck! Only thoroughly degreased objects can be colored!

Goran Budija
- Zagreb;Croatia



Hi there !
Could anyone of you tell me how to color aluminium in blue, both light and dark ? (The cheapest way, of course)
I am involved with motorcycle tuning parts.

Thanks in advance.

Oscar

oscar rivero
backyard mechanic - lagomar,canelones, uruguay
May 26, 2009


Hi, Oscar. To color aluminum for decorative outdoor application is a different thing than just trying to temporarily mark it for in-factory identification. You need to have a full polishing, cleaning, desmutting, anodizing, dyeing, and sealing process applied to these parts.

Talk to a local anodizing shop and they will explain, and maybe show you, what is involved. Good luck.

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
May 26, 2009




(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  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"