finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsSuggested
Books
Help
Wanteds
Advertise
Here
FORUM
(current
topics)
topic 4226

Dust on stainless steel surface after wet blasting


(2000)

In our shop we use to sand blasting the welded stainless steel components and other surfaces to achieve a unified color. The blasting is a wet process, i.e. water is mixed with glass bead. Subsequently the stainless steel surface is flush with high pressure water jet. No matter how thorough we do the flushing, there is always a layer of dust left behind on the metal surface. Can anyone be kind enough to suggest a reason and a solution how to remove the dust without manually wiping off.

Thank you.

Alfred B S Lee
- Hongkong, China


(2000)

I WOULD FIRST TRY A SPRAY OF 20% FLUORIDE. IF THAT WERE NOT SUCCESSFUL, I WOULD USE A NITRIC/Fluoride BLEND. THE Fluoride WOULD ELIMINATE ANY GLASS RESIDUAL AND NOT AFFECT THE STAINLESS TOO MUCH. THE NITRIC/HF MIXTURE MAY REQUIRE ADDITIONAL STEPS.

RICH PODOLSKI
CHEMICAL PROCESSING & ACCESSORIES - LINCOLNSHIRE, IL -USA


(2000)

Alfred: How are you passivating the stainless after your blasting process? The dust is "broken glass" that becomes a finely divided powder that is like trying to rinse talcum powder off a rough surface. A passivation step after blasting should help this condition and HAS to be done to properly condition the stainless.

Dan Weaver
- Toccoa, Georgia



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView CURRENT TOPICS

Disclaimer: It's not possible to 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 may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.