Trivalent Chrome Iridescent Yellow Passivation

Trivalent Chrome Iridescent Yellow Passivation 

TRIPASS YL 255

Introduction:

TRIPASS YL 255 is a single component liquid Trivalent iridescent passivation for Alkaline

and Acid Zinc plating process. It is completely free from Hexavalent Chrome.

TRIPASS YL 255 provide a thick film passivate layer on both Alkaline and Chloride zinc

deposits.TRIPASS YL 255 film achieve excelle corrosion resistance.

TRIPASSYL 255 is easy to operate and suitable for both Rack and Barrel, Automatic and manual plating process.

TRIPASS YL 255 film can be further enhanced with the application of the post applied Sealer or Topcoats.Which improve functionalproperties such as Corrosion resistance and   Coefficient of Friction.

TRIPASS YL 255

Feature:-

.Completely hexavalent chrome free.

. Excellent receptivity on alkaline and chloride zinc       electroplating deposits.

. Specially formulated for rack and barrel     applications.

. Produces films with an attractive, yellow green to  violet cast.

.High corrosion resistance with / without Topcoat.

.Exceptional bath life due to low operating temperature and reduced zinc contamination.

. Easy wastewater treatment. 

Corrosion Resistance:

Zinc 8 – 12 µ

. During the corrosion resistance test, in order to fully harden the film, please leave it for at least 24 hours.

. Corrosion resistance according to ASTM B117. The actual performance is depending on the plated parts and operating conditions and may largely vary.

Make up:-

 80ml/Ltr

Operating Conditions:-

Temp          20-35°C

Time            30-70 second

pH                1.8-2.8

Agitation:- Mild air agitation / Mechanical movement

Filtration:-Continuous filtration through min.10-micron bag /cartridge filter

Replenishment:-

Consumption of for 100 m2 

1.5-2.5 ltr

Impurity limits:

Maximum: - Fe    150 PPM, 

Zinc 12g/LTR.

  Copper - 5PPM, Lead - 5 PPM

Renewal of the passivation bath solution: As per the experience the bath renewal should be after about 800 dm2 /Ltr. operation.

Process Sequence:

1. Zinc Plating (Alkaline / Chloride)

2. D M Water Rinse

3. Activation (0.5% - 1.5% HNO3)

4. D M Water Rinse

5. ISOPASS TY 755

6. D M Water Rinse

7. Hot D M Water Rinse

8. Air Dry Oven

9. Dry (70 - 80⁰C)

Product Information:-

Density    1.21-1.23