Product Introduction

Trivalent Chrome Multicolor Passivator TR-125

Type : Trivalent yellow passivation
Use : Zinc Plating
Item : Chemical Auxiliary Agent
Property

TR-125 TrivalentChrome Multicolor Passivator


1. SpecificProperties

1. Trivalent chromepassivation process without hexavalent and oxidizer, got SGS internationalcertification.

2. Apply to zinc andzinc alloy trivalent chrome multicolor passivation process, excellent anticorrosiveproperty.

3. Exceed therequirements of hexavalent multicolor passivation according to DIN 50 021 SS.

4. Produce coatingsof a clear, green, nearly like rainbow color.

5. The passivationlayer can also be dyed with organic colorings.

6. Reduce the cost ofdisposing waste water due to trivalent solution, satisfy the environmentalrequirements for prohibiting hexavalent chrome passivator layer.

7. Long service life,even with feed-back of rinse-water.

8. Comply withAmerican standard GME00252 and GMW-3011.

                         

2. Process Flow

Plate zinc → Wash →Immerse Nitric Acid (0.5%) → Wash → Immerse TR-125→ Wash with cool water → Washwith hot deionized water → Dry

3. Operation andApplication Indication

Preparation

Range of   operation

Best   operation

TR-125 concentrate   solution

100-150ml/L

125ml/L
  (Gravity: 1 ml = 1.425
±0.02   g)

Wash

Deionized water


Immersion time

30-90 sec.

60 sec.

Temp.

10-40℃

25℃

PH

1.6-2.4

2.0
  Adjust the PH with dilute nitric acid or 10% sodium hydroxide