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


-----

Aluminum Brightening Without Anodizing

We manufacture Domestic Aluminum Ladders. I have this Problem that we need to anodize the Ladders As to Improve the Finish From the Standard Mill Condition, We would like to shift over to a Brightening finish where We would not need to Anodize the Aluminum. We Would like to Switch over to A Chemical or solution Without An Exothermic Reaction (Heating of the Solution and Causing Pollution and Fumes ). We Would be Grateful if someone Could Help.

Guarav Bathla
Aluminum Ladders Manufacturer - Bangalore , Karnataka, India
2004

---

2004

Hi Guarav,

Phosphoric acid will remove mill finish. A min of 2% by volume is required, it would speed up the process if heat was applied, usually 30 °C. you may have to trial different concentrations and heat settings to suit your needs.

Regards,

Brian Green
precision engineering - Geelong, Australia

What Brightness is required by you ? Without Anodizing your product will get Oxidation.

Satish Shah
- Anand, Gujarat, India
2004