Alkaline Etching Additive(Liquid)
LW-01 Alkaline Etching Additive is a light yellow liquid with the solid content over 43%. It is used for avoiding the scale formation and the aluminium dissolution can be over 120g/L. The additive can improve the etching quality, decrease the aluminium loss and the consumption of alkali. It is eco-friendly.
1. Bath Make-up:
Name | Quantity | Unit |
LW-01 | 20 | g/L |
Sodium Hydroxide (NaOH) | 40 | g/L |
Water | Balance | |
2. Operating Conditions:
Name | Quantity | Unit |
Temperature | 40-65 | ℃ |
Time | 1-25 | min |
Free alkali (Sodium Hydroxide) | 40-70 | g/L |
3. Solution Maintenance:
1) Analyze the concentration of free alkali and aluminum ion everyday. It is recommended that the concentration of free alkali in a new make-up bath should be 40g/L. And the alkali concentration and the solution temperature are slowly increased according to the increasing of aluminum ion. LW-01 and alkali should be added with the scale of 1/6-1/3.
2) Normally, the color of the solution is dark-gray. It will be light-grey if lacking of alkali or LW-01, then need to replenish in time.
3) When the etching solution is not being used, keep the temperature around 40℃, or increase the concentration of sodium hydroxide (NaOH) and LW-01 for avoiding precipitations.
4. Packaging and Storage:
Package: Plastic barrel (25kg/barrel,1000kg/barrel)
Storage: Suggested to store in a cool, dry and well ventilated place; away from fire and heat source.
