Product Description
*Key Features**
- **Advantages**
1. **Uniform coating**: Consistent coverage across the entire surface, suitable for fine wires (Φ0.1-2mm) and precision parts.
2. **Attractive appearance**: Can be passivated in blue-white or color, with strong decorative properties (e.g., crafts, electronic components).
3. **Low-temperature process**: Operates at room temperature (20-40°C), energy-efficient and environmentally friendly.
4. **Low hydrogen embrittlement risk**: Controllable current reduces hydrogen embrittlement fractures in iron wires.
- **Limitations**
1. **High cost**: High energy consumption and chemical usage, with a cost of approximately 1,500-2,500 RMB per ton.
2. **Weak corrosion resistance**: Thin coating (<20 μm), salt spray test 300-500 hours.
3. **Difficult wastewater treatment**: Wastewater containing heavy metals (zinc, chromium) requires complex treatment.
4. **Low production capacity**: Wire speed typically <50 m/min.
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**III. Equipment Selection Comparison**
| Parameter | Hot-dip galvanizing equipment | Electrogalvanizing equipment |
| **Applicable wire diameter** | Φ1.0-6.0 mm | Φ0.1-3.0 mm |
| **Coating Thickness** | 20-300 g/m² (65-85 μm) | 5-20 g/m² (7-28 μm) |
| **Production Line Speed** | 50-200 m/min | 10-50 m/min |
| **Salt spray resistance life* | 1000-2000 hours | 300-800 hours |
| **Cost per ton** | 500-800 yuan | 1500-2500 yuan |
| **Environmental friendliness** | Medium (requires treatment of zinc ash/acid mist) | Low (heavy metal wastewater) |
| **Typical Applications** | Construction wire, fence mesh | Electronic leads, sewing needles |
Audited Supplier 
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