HN-25R Hard Chromium Plating
Commodity Name
HN-25R Hard Chromium Plating
Composition and Working Conditions

 

Chromium trioxide                         180~275g/L

Purity sulfuric acid                         2.0~4.0g/L

Make up Solution HN -25K            10~30mL/L

Temperature                                 50~60℃

Current density of cathode            30~75 A/dm2

Current density of anode              15~35 A/dm2

Supplement of additive:                 It needs to add 100mL of replenisher  HN-25R while adding 1 kg of 

                                                      chromium trioxide.

 

Application and Advantage

 

1. Current efficiency of cathode is high, can reach 22~26%.

2. High micro hardness of deposit, good corrosion resistance.

3. Even, fine-grained and bright deposit.

4. No fluoride, it wont corrode the LCD area of component.