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HAIHUA LW-31 Eco-friendly & Multi-functional Alkaline Degreasing Additive (Liquid)
Product Introduction

LW-31 is a kind of colorless to yellowish transparent liquid , it is suitable for pretreatment of powder coating process to aluminum and its alloys. It can effectively remove natural oxidation film, oil stain, burr, floating sands on the surface of the sand-blasted aluminum profiles , so that the clean, uniform, delicate and soft metal surface can be obtained.


Advantage comparisons of alkaline degreasing process with traditional acidic degreasing process:

Process

/

Items

Acidic Degreasing Alkaline Degreasing
Eco-friendly Fluoride-containing, not Eco-friendly, harmful to the health Fluoride-free,Eco-friendly, harmless to the health
Waste Water Treatment A large amount of acidic (fluoride-containing) waste water is produced, 1.5-2 tons of waste water per ton of aluminum profiles production No acidic waste water is produced, on the contrary, its waste water can be used for neutralizing the acidic waste water from other process which can save waste water treatment cost.
Workshop Environment The acid fog produced during the processing not only deteriorates the working environment but also destroys the workshop equipments, oxidation and electrophoresis process. No acid fog or alkali fog and it is little corrosion to the equipments.
Bath Make-up:
Name Quantity Unit
LW-31 20 g/L
Water Balance
Operating Conditions:
Name Quantity Unit

Temperature

20-36

Time

3-6

min

Concentration

15-30

g/L

Solution Maintenance:
1. Analyze the concentration and etching degree of LW-31 daily,and test the concentration of aluminum ion regularly.
2. Replenish LW-31 by 3-4 kg per ton aluminum profiles after normal production.
Packaging and Storage:
Package: Plastic barrel (25kg/barrel)
Storage: Suggested to store in cool, dry and well ventilated place; away from fire and heat source.