In modern wire manufacturing, especially in copper, aluminum, and alloy wire production, many factories face common problems:
These issues are not caused by a single factor. In most cases, they come from the mismatch between wire drawing dies and polishing materials.
👉 That’s why we provide a complete solution: Diamond Wire Drawing Die + Polishing Powder System.

Instead of selling individual items, we focus on improving your entire wire drawing process.
We supply different types of dies based on your application:
Each die is designed to ensure:
Polishing powder plays a critical role in:
We provide carefully selected:
With controlled particle size and purity, ensuring compatibility with your dies.
Polishing Powder Comparison Table
| Powder Material | Hardness (Mohs) | Cost | Polishing Effect | Removal Rate | Surface Finish | Typical Use Stage | Recommendation |
|---|---|---|---|---|---|---|---|
| Aluminum Oxide (Al₂O₃) | 9 | Low | Stable | Medium | Good | Roughing / Fine / Maintenance | ⭐⭐⭐⭐⭐ |
| Diamond Powder | 10 | High | Excellent | High | Excellent | Fine / Mirror Polishing | ⭐⭐⭐⭐⭐ |
| Silicon Carbide (SiC) | 9.2 | Medium | Good | High | General | Roughing / Defect Removal | ⭐⭐⭐ |
| Chromium Oxide (Cr₂O₃) | 8.5 | High | Excellent | Low | Excellent | Ultra-fine / Mirror | ⭐⭐ |
| Silicon Dioxide (SiO₂) | 7 | Low | General | Low | Good | Ultra-fine Finishing | ⭐ |
| Cerium Oxide (CeO₂) | 6.5 | High | Excellent | Low | Excellent | Optical / Special Precision | ⭐ |
Recommended Powder for Different Die Types
| Die Type | Die Material | Recommended Powder | Process Suggestion |
|---|---|---|---|
| PCD Wire Drawing Die | Polycrystalline Diamond | Rough: Aluminum OxideFine: Aluminum Oxide / Diamond | Start with Al₂O₃ to remove marks, finish with diamond for high precision |
| Natural Diamond Die (ND) | Natural Diamond | Diamond Powder | Use diamond powder for ultra-precision and mirror polishing |
| CVD Diamond Die | CVD Diamond | Diamond Powder | Fine polishing only to maintain high accuracy |
| Tungsten Carbide Die | Tungsten Carbide | Rough: Silicon CarbideFine: Aluminum Oxide | Use SiC for defect removal, then Al₂O₃ for smooth finish |
Polishing Process Flow (Example for PCD Die)
| Step | Process Stage | Powder Used | Grit Size (Example) | Purpose |
|---|---|---|---|---|
| 1 | Rough Grinding | Silicon Carbide | W28 – W14 | Remove defects and machining marks |
| 2 | Rough Polishing | Aluminum Oxide | W7 – W3 | Improve surface smoothness |
| 3 | Fine Polishing | Aluminum Oxide | W2.5 – W1 | Refine surface quality |
| 4 | Pre-Mirror Polishing | Diamond Powder | W1 – W0.5 | Increase precision and brightness |
| 5 | Mirror Polishing | Diamond Powder | W0.25 – W0.1 | Achieve mirror finish |
Key Selection Principles
| Principle | Explanation |
|---|---|
| Match Hardness | Powder hardness should be slightly higher than die material |
| Cost vs Performance | Use Al₂O₃ for cost-effective stages, diamond for high precision |
| Process Stage | Different stages require different powders |
| Application Needs | Choose based on wire type and surface requirements |
Most suppliers only sell dies or abrasives separately.
However, in real production:
👉 Performance depends on the combination, not a single product
By using a matched system, you can:
Our solution is widely used in:
We don’t just sell standard products.

We provide:
For new customers, we suggest a trial combination:
👉 This allows you to quickly test performance and optimize your process.
By choosing our solution, you will get:
In wire drawing production, success does not come from a single product.
👉 It comes from the right combination of tools and materials.
We are committed to providing not just products, but a complete and reliable wire drawing solution for your business.
If you are looking to improve your wire quality and reduce production costs, feel free to contact us for a customized solution.