255 Acidic Zinc‑nickel Alloy Process Roll Plated Screws Electroplated Washers Small Parts Boric acid-free and ammonium-free acidic
Price:
Contact for the latest quote
MOQ:
5kg/200kg
Delivery Time:
10-20 day
Brand:
AOBANG
Product Description
255 Acidic Zinc‑Nickel Alloy Process
Products are widely applied in high‑end sectors including automotive, sanitary ware, motorcycle components and hardware.
1 Features
※ Boric acid-free and ammonium-free acidic bath;
※ High corrosion resistance of coating. Coatings with 12~16% nickel content can be obtained, and the bath solution is easy to manage;
※ Low-foam type. Excellent coating appearance can be achieved even under high temperature conditions;
※ Compliant with environmental requirements such as RoHS and ELV.
2 Additive Functions
| Product Designation | Function | Appearance | Specific Gravity |
|---|---|---|---|
| 255 A (BRIGHT A) | Make‑up & replenishment brightener | Light‑yellow to yellow liquid | 1.02 |
| 255 B (CARRIER B) | Auxiliary brightener | Colourless to light‑yellow liquid | 0.99 |
| 255 C (EXTR C) | Complexing agent | Colourless strongly‑alkaline liquid | 1.07 |
| 255 D (EXDER D) | Buffer agent | Colourless liquid | 1.20 |
3 Electroplating Process Flow
(View TDS for details)
4 Bath Composition
| Constituent | Zinc Chloride(g/L) | Nickel Chloride(g/L) | Potassium Chloride(g/L) | 255A(mL/L) | 255B(mL/L) | 255C(mL/L) | 255D(mL/L) |
|---|---|---|---|---|---|---|---|
| Standard Concentration | 45 | 60 | 220 | 30 | 1.0 | 10 | 150 |
| Operating Range | 40‑50 | 55‑65 | 220‑230 | 20‑40 | 0.5‑2.0 | 7.5‑12.5 | 130‑170 |
5 Operating Conditions
| Item | Bath Temperature(℃) | pH | Cathode Current Density(A/dm²) | Anode Material | Filtration | Anode Current Density(A/dm²) |
|---|---|---|---|---|---|---|
| Standard Condition | 35 | 5.5 | 1.5 | Nickel & Zinc (99.99 %) | Continuous filtration, 2‑3 bath turn‑overs per hour | > 4 |
| Operating Range | 30‑40 | 5.2‑5.8 | 0.5‑2.0 | Nickel & Zinc (99.99 %) | Continuous filtration, 2‑3 bath turn‑overs per hour | > 4 |
6 Bath Make‑up & Adjustment
(View TDS for details)
Note: This specification is based on our in‑house tests and data, for reference only.
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Company
Wuhan Aobong Surface Technique Co., Ltd.
Location
No.296 Changqing Road Jianghan District, Hubei Province, Wuhan City, China
Contact Person
Amy