Silver Plated Copper Wire Drawing Machine

The installation drawings we provide will help you complete the installation work. If required, we can arrange for Chinese engineers or local technicians to visit your site to complete the installation work.

1. Technical data sheet for the machine, containing its serial number, year of manufacture, intended use, specifications and operation and maintenance instructions.
2. Foundation specification.
3. Layout drawing.
4. Cable list.
5. Pneumatic and hydraulic diagrams.
6. Lubrication instructions.
7. Detailed specification for all the materials necessary to ensure normal operation of the machine; detailed specification for the electrical equipment.
8. Machine operation and maintenance manual.
9. Operation manual for the electrical equipment.
10. Assembly drawing for the main units.
11. Installation drawings for the main components with a part list as well as a list of wear parts and their identification drawings.
12. List of motors and electrical components, all documentation for the electrical components.
13. Circuit drawings and wiring diagrams, cable lists.
14. Instructions for the setup, check and, if necessary, calibration of all digital indicators.
15. Software packages necessary for maintenance.
16. Control program passwords (keys).
17. Certificates of quality and acceptance certificates.
18. Spare and wear parts lists containing the ID numbers and manufacturers of these parts.
19. Subcontractors’ technical documentation for all the machine components being purchased.

Silver-coated copper wire drawing machine, as known as electroplated silver copper wire drawing machine.it is a special factory equipment for making silver-covered copper core cables, which have many industrial processing requirements and disadvantages of the original structure.

In order to produce high-quality wire, a silver-coated copper wire drawing machine incorporates precision and innovation. To refine silver plated copper wire's diameter and strength, silver plated copper wire is progressively drawn through smaller dies. By combining the best characteristics of both metals, this dual-process enhances conductivity and corrosion resistance on the wire. It is ideal for demanding electrical applications and high-end manufacturing needs due to its superior performance and aesthetic appeal.

Yes, silver plated copper wire can be drawn without damaging the coating, but it requires precise control of reduction, lubrication, and die condition.

In practice, we limit the reduction per pass to 8–15% for plated wire, compared to 15–25% for bare copper. This lower reduction helps prevent cracking or peeling of the silver layer.

We also recommend:

• Using high-quality synthetic drawing lubricants
• Maintaining die surface roughness below Ra 0.2 μm
• Keeping wire temperature below 80–100°C during drawing

With proper process control, the silver coating remains intact, and the final wire maintains excellent conductivity and surface finish.

For silver plated copper wire drawing, the recommended reduction per pass is typically:

• 8–12% for fine wire (≤0.2 mm)
• 10–15% for medium sizes (0.2–0.5 mm)

Exceeding these values increases the risk of coating damage, especially micro-cracks in the silver layer.

For ultra-fine wire production, we usually apply:

• Multi-pass drawing (6–12 passes)
• Gradual reduction to maintain coating integrity

The key is to balance productivity and coating protection, rather than maximizing reduction per pass.

Maintaining surface quality in silver plated copper wire drawing requires strict control of three factors:

1. Die condition

• Use polished diamond or PCD dies
• Die angle typically 8–12°
• Regular cleaning and replacement to avoid scratches

2. Lubrication system

• Use low-viscosity synthetic lubricants
• Ensure full coverage to reduce friction
• Avoid contamination

3. Cooling and temperature control

• Keep wire temperature below 90°C
• Use water or air cooling systems to prevent oxidation and coating damage

When these parameters are controlled, the wire achieves a smooth surface, uniform diameter, and minimal defects.

Yes, multi-pass drawing is essential, especially for fine and ultra-fine silver plated copper wire.

For example:

• Drawing from 1.0 mm → 0.1 mm typically requires 8–12 passes
• For ultra-fine wire (≤0.05 mm), even more passes may be required

This approach allows:

• Lower stress per pass
• Protection of the silver coating
• Better dimensional accuracy

Single-pass or aggressive reduction will almost always lead to coating damage or surface defects.

The most suitable dies for silver plated copper wire drawing are:

• Polycrystalline Diamond (PCD) dies → for general production
• Natural diamond dies → for ultra-fine wire (≤0.1 mm)

Key specifications:

• Die angle: 8–12°
• Bearing length: 30–50% of wire diameter
• Surface finish: mirror-polished (Ra < 0.2 μm)

These dies provide:

• Low friction
• High wear resistance
• Minimal surface damage

Proper die selection is critical to maintaining both wire quality and coating integrity.