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R·G-728 Liquid Trivalent Black Passivation For Electroplated Zinc Nickel Alloy Coatings
R·G-728 Liquid Trivalent Black Passivation For Electroplated Zinc Nickel Alloy Coatings
Specifications
Model Number :
R·G-728
Payment Terms :
T/T
MOQ :
25-30kg
Delivery Time :
5-8 work day
Agitation :
Mechanical Agitation
pH Value :
1.5-2.0
Min Coating Thickness :
8 μm
Packaging Details :
25kg/drum
Place of Origin :
China
Brand Name :
AOBANG
Concentrate :
70-90 mL/L
Operating Temperature :
22-30 ℃
Immersion Time :
70-120 seconds
Description
R·G-728 Trivalent Black Passivation for Zinc-Nickel Alloy
Performance & Features

R·G-728 is a liquid trivalent chromium black passivation process completely free of hexavalent chromium, specially developed for electroplated zinc-nickel alloy coatings. Specific gravity: d=1.26±0.03.

Compatible with both barrel plating and rack plating processes.

Operating Parameters
Item Working Range
R·G-728 Zinc-Nickel Trivalent Black Passivation Concentrate 70–90 mL/L
pH Value 1.5–2.0
Operating Temperature 22–30 ℃
Immersion Time 70–120 seconds
Minimum Zinc-Nickel Alloy Coating Thickness 8 μm
Agitation Mode Mechanical agitation
Application Scene
  • Zinc-nickel alloy workpieces
  • automotive chassis parts
  • aerospace fasteners
  • electronic precision parts
  • new energy hardware
  • industrial mechanical components
  • anti-corrosion metal parts
  • black decorative hardware
  • outdoor metal fittings
  • high-precision structural parts
Application Scene Description

R·G-728 is a professional trivalent black passivation solution for zinc-nickel alloy plating. It forms uniform, glossy black passivation films with outstanding anti-corrosion performance. It suits high-standard industrial metal parts needing black decoration and long-term rust resistance, widely used in automotive, electronics, new energy and aerospace fields.

Q&A

Q1: What are the core features of R·G-728 passivation?

A1: It delivers uniform pure black film without color difference, features trivalent chromium environmental protection, and greatly boosts zinc-nickel alloy corrosion resistance. The film has strong adhesion, stable texture, no fading, and adapts to mass industrial production.

Q2: What workpieces is R·G-728 suitable for?

A2: It is specially applicable to all zinc-nickel alloy plated workpieces, including automotive chassis hardware, new energy equipment parts, electronic precision fasteners and aerospace light-duty structural metal components.

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R·G-728 Liquid Trivalent Black Passivation For Electroplated Zinc Nickel Alloy Coatings

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Product Detail
Model Number :
R·G-728
Payment Terms :
T/T
MOQ :
25-30kg
Delivery Time :
5-8 work day
Agitation :
Mechanical Agitation
pH Value :
1.5-2.0
Contact Supplier
R·G-728 Liquid Trivalent Black Passivation For Electroplated Zinc Nickel Alloy Coatings

Wuhan Aobong Surface Technique Co., Ltd.

Verified Supplier
1 Years
hubei, wuhan
Since 2002
Business Type :
Manufacturer
Main Products :
Zinc Nickel Alloy Plating Process, Zinc Plating Additives, Nickel Plating Additives
Employee Number :
>2000
Certification Level :
Verified Supplier
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