Operating Condition of Electropolishing

Polishing is treated for base metal before anodizing process, but polishing after anodized also need, on this process we serve electropolishing to the anodized aluminum.

The below are the solution and operating Condition for Electropolishing Aluminum.

No.	Composition	Wt (%)	Anodic Current Density (A/sq.ft)	Voltage (Volt)	Temperature ( 0C )	Treatment Period (min)
1	Orthophosporic Acid Sulphuric Acid Chromic Acid Water	65 15 6 14	200 - 250	12 - 15	70 - 80	2 - 5
2	Orthophosporic Acid Sulphuric Acid Chromic Acid Water	43 43 3 11	300 - 500	12-15	70 - 80	2 - 5
3	Orthophosporic Acid Sulphuric Acid Chromic Acid Water	36 36 4 24	200 - 400	12 - 15	70 -90	1 – 5
4	Orthophosporic Acid Chromic Acid Water	82 12 6	209 - 400	12 - 15	70 - 80	5 – 8
5	Trisodium Phosphate Soda Ash	5 15	30 - 60	12 - 15	80 - 90	5 – 8
6	Hydrofluoboric Acid	1.25	15 - 30	20 - 30	30	10 - 20

See other metal coating method: Preparation for metal coating