Product Introduction

Brightener for Hard Chromium Plating KCR-25

Property

1. With high cathode efficiency, it may be up to 23%-26%.

2. The current density even over 60A/dm2 is available.

3. The deposition speed for KCR-25 bath is 2-3 times faster than conventional hard chromium process.

4. It is chloride-free, the KCR-25 process dose not cause erosion of the workpiece in low current density area.

5. The micro-hardness of the plating is up to 950HV-1100HV100.

6. The amount of the micro cracks of the plating may be up to 400/cm, so it improves the corrosion resistance ability of the plating.

Bath composition & Operation condition


Operation range

Standard

Chromium trioxide

200~275g/L

250g/L

KCR-25 Catalyst


20ml/L

Sulfuric acid

2.5~4g/L

2.7g/L

Temperature

50~60℃

58℃

Cathode current density(Dk)

50~75A/dm2

60A/dm2

Anodic current density

15~30A/dm2

30A/dm2