23+ years of serious education, promoting Aloha,
& the most fun you can have in metal finishing
on this site FORUM
Non Uniform colour of anodizing coating 'WITHIN A PIECE'
The material has < 1% of Si, Cu, Mg, Mn altogether. FEW PIECES in a load gets color variation (like patches Light grey and dark grey). When the component is stripped and re-anodized the same pattern of patches appear only on pieces that had problem before. Is it a material problem or process inconsistency? We don't get this problem on other types of components with the same composition. Temperature- 13 C, Current density - 3 amp/dm2
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.