Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Inspection post passivation for closed / non visible systems

March 2, 2009

In ASTM A380 , several methods are suggested for inspection of cleanliness post passivation: Visual inspection; wipe tests; residual pattern; water-break test; free iron test such as water-wetting or drying; high-humidity test; and copper sulphate [on eBay or Amazon]test. Precision inspection shall be performed by solvent-ring test, black light inspection, atomizer test, and ferroxyl test.

How can a closed system be inspected for proper cleanliness and passivation where most areas are not accessible to the eye or a boroscope without breaking the system open?

Thanks,

Arnaud Serfass
Director, Life Sciences - Singapore

(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: