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HAIHUA LW-02 Alkaline Etching Additive (Solid)
Product Introduction
LW-02 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 etching quality, decrease the aluminum loss and the consumption of alkali. It is eco-friendly.
Bath Make-up:
Name Quantity Unit
LW-02 7 g/L
Sodium Hydroxide (NaOH) 40 g/L
Water Balance
Operating Conditions:
Name Quantity Unit
Temperature 40-65
Time 1-25 min
Free alkali (Sodium Hydroxide) 40-70 g/L
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, keep the temperature around 40℃, or increase the concentration of sodium hydroxide (NaOH) and LW-02 for avoiding precipitations.
Packaging and Storage:
Package: Carton (30kg/ carton), plastic woven bag (25kg/bag)
Storage: Suggested to store in a cool, dry and well ventilated place; away from fire and heat source.