1、 Application scope

This product is an acidic liquid without chromium. It can effectively remove oxide films and stains on the surface of aluminum or aluminum alloys, suitable for spot welding, aluminum oxidation, roughening or chemical polishing, and use after alkaline etching< Br/> This product is not suitable for high silicon alloys such as cast aluminum.

2、 Product features

3、 Process and parameter chemical characteristics

Appearance: Acidic reddish brown liquid
Specific gravity: 1.32~1.34kg/L (25 ℃)

4、 Operating conditions

5、 Tank liquid maintenance

5.1. Determination of concentration:
1. Take 5.00ml of working solution into a triangular flask and add 100mI of water< Br/> 2. Add 5ml of 10% sodium acetate and 10ml of 2% sulfosalicylic acid solution< Br/> 3. Titrate with 0.05M EDTA until the endpoint is dark red to light yellow.

5.2. Calculation
TAD-830 (ml/L)=9.1 × Titration number × Coefficient
Coefficient: The coefficient of 0.05MEDTA standard solution

5.3. Maintenance When the reaction to remove stains is slow and the concentration is normal, please check the pH value of the tank liquid. If the pH value is greater than 1, adjust it with nitric acid to pH less than 1

6、 Packaging

This product is packaged in plastic drums, with a net weight of 25 KG per drum. Avoid direct sunlight during storage.