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

-----

How to clean hot rolled steel for preparation of a rust finish?




What can be used to clean hot rolled sheet steel to remove the factory coating? The reason I ask is because I make lamp shades and finish them with a rust finish. Someone had suggested I use muriatic acid? Is there a less toxic chemical available to clean this rolled sheet metal with?

Philip Burch
custom furniture - Phoenix, Arizona
1999


Dear Philip

You don't obligate to use Muriatic Acid , as a matter of fact every acid will do the job including citric acid this on eBay or Amazon [affil links] . You have to remove the natural oxide layer which existing on the metal surface and then you will get rusted again.

TIP - You can increase the rate of rusting by using Salt Spray cabinet . Just put the part in it and you will get every level of rust you want

yehuda blau
Yehuda Blau
YB Plating Engineering and Quality - Haifa Israel
1999


I assume that you need to remove the scale from the steel. Inhibited phosphoric acid at 50-70 deg C preferably containing degreasing additives (commercial products readily available)will do the job in a stainless steel tank. Water wash and use a final hot rinse containing rust inhibitor. If you require higher paint performance you may need to consider further pretreatment stages.

Roger Bridger
- Croydon, Surrey, UK
2000


To remove any deposits of white rust I suggest an ambient temperature immersion in inhibited phosphoric acid with HF based activator. Immersion time 5 - 10 minutes then rinse in cold water and dry.

Alex Jennings
- Hawarden, North Wales
2000




(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"