[Product Description]
It is suitable for various die-casting aluminum, aluminum profiles, aluminum alloys, zinc materials, zinc alloys and other products. It undergoes chemical oxidation treatment on the surface of aluminum alloy at a fast speed, resulting in a film layer with good corrosion resistance and strong adhesion to the coating.
[Performance characteristics]
1. Green acidic concentrated liquid containing trivalent chromium salt, used for trivalent chromium passivation treatment of various aluminum materials
2. The anti-corrosion performance is equivalent to hexavalent chromium passivation and can replace the hexavalent chromium passivation process
3. Can be used for post-treatment of anodizing
4. Form a transparent, light colored coating on the surface of the workpiece being processed
5. Meets or even exceeds the corrosion resistance standards of MIL-DTL-81706 and MIL5541 (according to ASTMB-117 and DIN 50021 SS neutral salt spray test standards, white rust begins to form after 264 hours)
6. Low contact resistance, less than 5000 µ Ohm/square inch according to MIL-DTL-81706B
[Product Usage]
Trivalent chromium passivation agent can be used for soaking, spraying, and wiping treatments, and can be used for tap water distribution tanks.
涂覆处理的前处理 | 耐腐蚀处理 | |
膜重 | 2 | 2 |
开槽比例 | 8-15ml/L（喷淋） 6-12ml/L（浸泡） | 15-25ml/L（喷淋） 12-20ml/L（浸泡） |
温度 | 20-35℃ | 30-40℃ |
pH | 2.5-4.0 | 3.5-4.0 |
处理时间 | 2-5min | 3-8min |
Pre treatment of coating treatment | Corrosion resistant treatment | |
Membrane weight | 2 | 2 |
Slotting ratio | 8-15ml/L（spray） 6-12ml/L（soak） | 15-25ml/L（spray） 12-20ml/L（soak） |
Temperature | 20-35℃ | 30-40℃ |
pH | 2.5-4.0 | 3.5-4.0 |
Processing time | 2-5min | 3-8min |
[Reference process]
1. Weak alkaline degreasing → water washing → descaling → water washing → trivalent chromium passivation → water washing
2. Acid degreasing → Water washing → Trivalent chromium passivation → Water washing
