Microcrack Chrome Process
- Improves the corrosion resistance at least by 25% in comparison to conventional Chrome.
- Excellent abrasion resistance.
- Outstanding aspect of haze and cloud free finish.
- Only 5 – 6 mins. required for getting thickness of 0.8 to achieve the desired microcrack structure.
- Longer testing brightness on component as compared to conventional chrome / microporous Nickel – Chrome system.
- Easy control on maintenance.
- Total thickness of Nickel can be reduced by 20 – 25% without compromising the durability.
MICROCRACK PATTERN
No. of Cracks : 30 to 70 nos. per mm.
OPERATING CONDITIONS
| Current density, cathodic |
15 – 25 A/dm2 |
| Temperature |
45 - 52°C
|
| Rate of deposition |
App. 1.0 in 5 mins. at 20 A/dm2 at 50 °C |
| Anode – Cathode ratio |
2 : 1 |
| Chrome – sulphate ratio |
(175 – 200) : 1 |
SOLUTION COMPOSITION
For make up of 100 ltrs.
- 25 kgs. MICROSTAR CHROME SALT
- 2 ltrs. MICROSTAR ADDITIVE 213
- 750 ml. MICROSTAR ADDITIVE A-15
For increasing the density by about 1Be, following additions are required
| MICROSTAR CHROME SALT |
15 G/L. |
| MICROSTAR ADDITIVE 213 |
1 ML/L. |
| MICROSTAR ADDITIVE A-15 |
0.5 ML/L. |
|
