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LW-38 Two Acids Chemical Polishing Additive (Yellow Smoke-free) (Liquid)
Product overview:
    LW-38 is a kind of dark brown to black liquid, it’s mainly applicable to the aluminum profiles chemical polishing treatment of sanding surface, brushing surface, glossy, mechanical polishing effect, which can make them have similar high glossiness and mirror effect comparable to the three acids chemical polishing process.
Features::
1) LW-38 is an environmental protection for it is free of nitric acid、nitrate and nitrite, for it’s compositions are very environmental friendly, it is odorless and smokeless during the polishing process as well as it will not produce toxic gases;
2) No need the exhaust purification equipment, which can also achieve a comfortable working environment;
3) LW-38 requires lower processing temperature and makes lower energy consumption than three acids chemical polishing.
Bath Make-up:
Name Quantity Unit
1) Phosphoric Acid (85%) : Sulphuric Acid (98%) =7:3 bath make-up
LW-38 70 kg
Phosphoric Acid (85%) 700 L
Sulphuric Acid (98%) 300 L
Aluminum Chips ( washed cleanly) 30 kg
2) Phosphoric Acid (85%) : Sulphuric Acid (98%) =1:1 bath make-up
LW-38 70 kg
Phosphoric Acid (85%) 500 L
Sulphuric Acid (98%) 500 L
Aluminum Chips (washed cleanly) 30 kg
Note: If the bath size is large than 5m3, it is generally recommended to apply the ratio of phosphoric acid (85%) : sulphuric acid (98%) =7:3 for two acids bath make-up; while the bath size is less than 5m3 and the polishing effect requirement is not very high, can apply the ratio of phosphoric acid (85%) : sulphuric acid (98%) =1:1 for two acids bath make-up.
Operating Conditions:
Name Quantity Unit
1) Phosphoric Acid (85%) : Sulphuric Acid (98%) =7:3 operation conditions
Polishing Temperature 80-110
Polishing Time 60-360 s
Dripping Time 20-120 s
Phosphoric Acid Content 48-58 %
Sulphuric Acid Content 23-33 %
Water Content 10-16 %
2) Phosphoric Acid (85%) : Sulphuric Acid (98%) =1:1 operation conditions
Polishing Temperature 80-110
Polishing Time 60-360 s
Dripping Time 20-120 s
Phosphoric Acid Content 36-44 %
Sulphuric Acid Content 38-46 %
Water Content 8-12 %
Solution Maintenance:

Maintenance of LW-38 bath solution is quite simple:

1) Replenish the phosphoric acid, sulphuric acid, LW-38 by proper bath make-up ratio when the bath solution level gets down (no need to add aluminum chips when replenishment);

2) No need to analyze the solution frequently, it is suggested to analyze the phosphoric acid, sulphuric acid, water, and aluminum ions content every few days or when problems occur, then adjust them to be within the parameter range.
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.

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