Magnesium alloy blackening passivation agent Magnesium blackening passivation process Chemical additives

Magnesium alloy blackening passivation agent

1. Product number: Q/YS.930（Yi Shun brand)

2. Range of application:

This product is applicable to black deactivation on the surface of magnesium alloy so that the surface form a layer of black corrosion resistance deactivation film. Film layer is uniform, and adhesion is good, it can be used for magnesium alloy anti-corrosion treatment and decorative treatment.

3. Product index:

⑴ this product is a transparent liquid without odor

⑵ proportion: ＞1.0

⑶ PH value : ＜7.0

4. Usage method:

This product is mixed with water two times, blackening time is 3-5 minutes, blackening temperature is 80℃±5℃.

Operation flow: 

⑴ Magnesium alloy is removed oil, grinded, polished, you can clean and bright magnesium alloy surface.

⑵ Black deactivation of magnesium alloy agent is added 2 times of the water, and is heated to 80℃±5℃. Mg alloy is immersed in blackening agent for 3-5 minutes.

⑶ washing and drying at 80℃.

5. Matters needing attention:

 ⑴This product is corrosive, do not contact with the skin.

 ⑵You should replenish the blackening agent solution to restore the effect, due to the consumption of ingredient during operation.The amount of supplement is 2% - 3%.

⑶Waste water before discharging  go through the biological degradation in sewage tank and filtration treatment.

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