Product Overview
Precision graphite drawing dies are widely used in copper, brass, and aluminum tube/rod drawing operations. With excellent surface finish, wear resistance, and non-wetting properties, graphite dies provide smooth drawing, reduced die wear, and high-quality finished tubes and rods for plumbing, HVAC, and electrical applications.
Key Features
- Excellent surface finish for smooth drawing
- Wear resistant for long die life
- Non-wetting to copper and aluminum
- Precision sizing and tolerances
- Easy to machine and rework
- Available for various tube sizes
- Multiple graphite grades available
Technical Specifications
| Parameter | Unit | Value |
|---|---|---|
| Material | - | Fine-Grain Isostatic Graphite |
| Bulk Density | g/cm³ | 1.80 - 1.88 |
| Shore Hardness | - | 70 - 80 |
| Flexural Strength | MPa | 45 - 55 |
| Bore Diameter Range | mm | 2 - 50 |
| Surface Finish (Bore) | Ra μm | ≤0.4 |
| Diameter Tolerance | mm | ±0.005 |
Applications
- Copper tube drawing and piercing
- Brass rod and wire drawing
- Aluminum tube extrusion assistance
- HVAC copper pipe production
- Plumbing copper tube manufacturing
- Electrical conductor drawing
- Continuous casting guide dies
Why Choose Jincheng Drawing Dies?
We manufacture precision graphite drawing dies and guide dies for copper and non-ferrous metal tube/rod manufacturers. Our dies are precision machined with fine surface finish for smooth drawing operations. We offer standard dies as well as custom dies for your specific tube sizes and drawing equipment.
FAQ
Q: How long do graphite drawing dies last?
A: Die life depends on tube material, drawing speed, lubrication, and die size. For copper tube drawing, typical die life ranges from several tons to tens of tons of drawn product. Proper lubrication and die cooling significantly extend die life.
Q: Can you produce custom die sizes and geometries?
A: Yes, we specialize in custom graphite drawing dies and guide dies. Please provide your die drawings or specifications including bore diameter, outer diameter, length, and any special geometries (bellmouth, cone angle, bearing length). We will produce precision dies to your requirements.
Q: What is the advantage of graphite dies over carbide?
A: Graphite dies are much easier to machine and rework, allowing faster turnaround for custom sizes. They also do not gall or stick to non-ferrous metals, providing smooth drawing. Carbide dies last longer for high-volume production, but graphite dies are more economical for smaller runs and custom sizes.
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