A website for Serious Education, promoting Aloha,
& the most FUN you can have in metal finishing.
on this site FORUM
Black Chromating Process
We use acid zinc as our main production. We have a problem in black chromating process, on the surface of the part we found several white spots. Why ?
- Cikarang, Jakarta, Indonesia
Kasmin first are you using a proprietary silver nitrate black chromate? Second, following rinsing after plating what are you using for a neutralization step, dilute acid? Are you rinsing in a tank following the black that is clean? Is this an automatic machine or hand line?
tech svc. w/ chemical supplier - Grand Rapids, Michigan
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
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
How Google uses data when you visit this site.