Year1
- 包装：
- 桶装
- 规格：
- 25kg/桶
It can form a colorless corrosion-resistant passivation layer on the aluminum surface, which can provide good bonding force for subsequent coating layers.
It is a green and environmentally friendly product.
Simple operation and easy to control.
.Solution composition and operating conditions:
Raw materials and operating conditions
Standard cylinder opening volume
Range
Aluminum alloy chromium-free environmentally friendly passivation agent
Temperature
℃
~3℃
Time
3. Prepare the solution:
For For each liter of tank liquid, first inject half of the pure water into the tank and turn on the pump for stirring. Then add about kilograms of chromium-free passivator, and add water to liters.
.Solution analysis method:
Free acid: Take 1 ml of bath solution, add 3 ~ drops of bromophenol blue indicator, and titrate with. When the bath solution changes from yellow to blue-green, the end point is reached. The number is the number of free acidity points.
Free acid range: Dip: - Spray:
To increase the free acidity: add chromium-free passivator to each bath.
.Equipment requirements
Project requirements
Tank body made of stainless steel or lined with hard materials
Hangers made of stainless steel or fluorine-resistant materials
Air mixing needs to be moderate and uniform Air mixing
Circulation, lined or type 3 stainless steel circulation pump
Adding system needs, the feeding pump material is, or, can withstand strong alkali
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