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

pub
Free personalized metal finishing help!


Fading problems of particular shade in powder coating



(-----) 2004

We have been suppling all leading Oil companies their requirement of various shades in powder coating. Unfortunately, recently we have started getting field complaints of fading of colour on pumps. In particular it has been observed that P.O. Red shade made by M/s Marpol is getting faded in field after coming in open atmosphere for some time of around 2 to 3 months.

Request to please give solution of the above to avoid such problems in future.

Shailesh Dhanani
Mercantile & Industrial Development Co Ltd - Ahmedabad, Gujarat, India
^


2004

Shailesh Dhanani,

Your question is incomplete , Pl write the full specification of powder using i.e., EP or PP Epoxy only.

But again this problem can be solve by using the Powder (Ultra voilet resistance).Pure Polyester.

Rakesh Sharma
Minda - Delhi, India
^


2004

Dear Mr. Sharma,

Thanks for your response. in fact I forgot to mention that the one what we are using is Pure Polyster Powder. You may please suggest.

Shailesh Dhanani
Mercantile & Industrial Development Company Limited - Ahmedabad, Gujarat, India
^


2004

Dear Sirs,

Unfortunately red & yellow pigment dyes (used in surface coatings) have poor resistance to ultra violet light some are better than others. Maybe your powder mfgr. is using a locally produced red dye that may not be suitable for your process. One of the worlds most respected red pigment mfgr. does have offices in India- phone them up for advice and then ensure your mfgr. uses the pigment that is recommended by them. Ask your powder supplier to carry out and show you the results of test panels subjected to 500 & 1000 hours in a UV cabinet-- this will show the discolouration to be expected from different red pigment blends. Expect to pay a little more for your product.

Terry Hickling
Birmingham, United Kingdom
^

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 -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    -    ©1995-2022 finishing.com, Pine Beach, New Jersey, USA