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

Problem? Solution? Chime right in!
(perhaps the world's last 'no registration' site)

-----

"What is the best pretreatment for Duracoat?"



November 20, 2015

Q. I am looking to do a Duracoat on some small parts that I am making. The Duracoat is provided by www.lauerweaponry.com. They suggest that I get the parts parkerized before applying the Duracoat. I'm in the middle of the machining process now, and would like to know a few things before I go ahead with the finishing process.

1. What exactly is the industrial name for Parkerize and DuraCoat? I thought Parkerize is a type of zinc/manganese phosphate, but I can't be sure.

2. Any alternative to parkerizing as foundation for the DuraCoat? I can't find any vendor around me to do the job (parkerized or zinc/manganese phosphate) and I'd prefer to have someone handle this professionally.

Minh Tran
Hobbyist - Walnut Creek, California USA
^


November 2015

A. Hi Minh. You are right that over the past many decades the phrase "Parkerize" has become so slang-ified that it is hopeless to try to put a fine point on it. Many people insist that it means manganese phosphate, many insist it is zinc phosphate, and both groups cite historical literature to prove their claim :-)

If you are applying a proprietary coating like Duracoat, you really ought to ask them to spell out exactly what they want for pretreatment, rather than presenting it ambiguously -- but I'm pretty confident that a conventional zinc phosphate pretreatment will be just fine, and so will the less common manganese phosphate. Good luck.

Regards,

pic of Ted Mooney
Ted Mooney, P.E. RET
Aloha -- an idea worth spreading
finishing.com - Pine Beach, New Jersey
^

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



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

Q, A, or Comment on THIS thread SEARCH for Threads about ... My Topic Not Found: Start NEW Thread