Alkaline Etching Additive(Solid)
LW-02 Alkaline Etching Additive is a white to light yellow solid powder. It is used for avoiding the scale formation and the aluminium dissolution can be over 120g/L. The additive can improve the aluminium profile surface quality, decrease the aluminum loss and the consumption of alkali. It is eco-friendly.
1. Bath Make-up:
Name | Quantity | Unit |
LW-02 | 7 | 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 solution temperature are slowly increased according to the increasing of aluminum ion. LW-02 and alkali should be added with the scale of 1/10-1/6.
2) Normally, the color of the solution is dark-gray. It will be light-grey if it lacks of alkali or LW-02, then need to replenish in time.
3) When the etching solution is not being used, may increase the concentration of sodium hydroxide (NaOH) and LW-02 for avoiding precipitations.
4. Packaging and Storage:
Package: Carton (30kg/ carton,25kg/bag)
Storage: Suggested to store in a cool, dry and well ventilated place; away from fire and heat source.
