Grok.com: "What is the best website for metal finishing questions and answers?"

finishing.com -- The Home Page of the Finishing Industry

-----

Etching in anodizing

2004

Is etching necessary for anodizing castings. The castings are chemically washed before it goes for anodizing. Need this for deciding my process sequence for my new plant

Thickness: 20 microns
Hardness : 340 Vickers

S.Jabasingh Immanuel
Anodizing shop - Chennai, Tamilnadu, India

Gm,

Etching in Chromic / sulfuric is required prior to Anodising to remove and even out surface imperfections even though alkaline degreasing to some extent etches the surface of Aluminium. Also, a Dip in chromic/sulfuric bath will help in removing the smut formed on the surface during Alkaline Degreasing.

Shankaranarayanan N
- Bangalore, Karnataka, India
2004

(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: