Fast Chromo-phosphating Agent ; FP-93
SPECIFIC PROPERTY & APPLICATION
1. A uniform and corrosion resistance film can be obtained without surface treatment.
2. Immersion time: 3-7 minutes at room temperature, low energy and high efficiency.
3. High adhesion, corrosion resistance.
4. An excellent Phosphating film can be obtained on general metals.
5. Phosphating film performance: high adhesion, thermo-stability and impact resistance.
6. Non-volatile bath is easy to operate without any health hazard.
PHYSICAL INDEX
1. working solution: odorless, clear liquid.
2. specific gravity: 1.08
3. PH 2-3
4. non-inflammable, non-explosive
TECHNOLOGY PROCESS
Substrate--degreasing, derusting—water rinse—FP-93 phosphating --- water rinse --- drying
BATH COMPOSITION & OPERATION CONDITION
FP-93 phosphating agent: 50ml/L
Sodium Hydroxide: 0~1g/L
Water: allowance
Total acidity: 14~-18
Free acid: 1~2.5
Time: 3~7 min
Temperature: 20~40℃
