Wuhan Aobong Surface Technique Co., Ltd.
| Payment Terms | T/T |
| Delivery Time | 5-8 work day |
| Agitation | Mechanical Agitation |
| pH Value | 1.5-2.0 |
| Min Coating Thickness | 8 μm |
| Packaging Details | 25kg/drum |
| Concentrate | 70-90 mL/L |
| Operating Temperature | 22-30 ℃ |
| Immersion Time | 70-120 seconds |
| Model Number | R·G-728 |
| Place of Origin | China |
| Brand Name | AOBANG |
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Product Specification
| Payment Terms | T/T | Delivery Time | 5-8 work day |
| Agitation | Mechanical Agitation | pH Value | 1.5-2.0 |
| Min Coating Thickness | 8 μm | Packaging Details | 25kg/drum |
| Concentrate | 70-90 mL/L | Operating Temperature | 22-30 ℃ |
| Immersion Time | 70-120 seconds | Model Number | R·G-728 |
| Place of Origin | China | Brand Name | AOBANG |
| High Light | Liquid Trivalent Black Passivation ，Zinc Nickel Trivalent Black Passivation | ||
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.
| 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 |
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.
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.
Company Details
Business Type:
Manufacturer
Year Established:
2002
Employee Number:
>2000
Ecer Certification：
Verified Supplier
Overview of Aobang Established in 2002, the company comprises: Wuhan AoBang Surface Technology Co., Ltd. Wuhan AoHua Surface Engineering Co., Ltd. Lane (International) Chemicals Co., Ltd. Jerry's (International) Surface Technology Co., Ltd. Omex New Materials Co., Ltd. AoBang Surface Technology R... Overview of Aobang Established in 2002, the company comprises: Wuhan AoBang Surface Technology Co., Ltd. Wuhan AoHua Surface Engineering Co., Ltd. Lane (International) Chemicals Co., Ltd. Jerry's (International) Surface Technology Co., Ltd. Omex New Materials Co., Ltd. AoBang Surface Technology R...
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