Product Overview
PCD drawing dies use polycrystalline diamond as the core material, sintered from micron-sized diamond particles and a metal binder under high temperature and high pressure. PCD is isotropic (non-directional), has high toughness and excellent impact resistance. Compared with single crystal diamond (MCD), PCD is less prone to cracking along cleavage planes, making it particularly suitable for drawing with high reduction ratios, large-diameter wires, as well as applications involving vibration and impact.
Especially suitable for: Copper wire, aluminum wire, alloy wire, coated welding wire, steel cord, steel strand wire, NiTi (Nickel-Titanium) memory alloy wire, non-circular cross-section wires (square, rectangular), and mass production scenarios requiring multiple re-dressing or re-plating.
Specification：
Application Fields
| Industry | Typical Wire Types | Wire Diameter Range |
|---|
| Wire & Cable | Copper wire, aluminum wire, copper alloy wire | φ0.10 – 8.00 mm |
| Welding Wire | Gas shielded welding wire, submerged arc welding wire, flux-cored wire | φ0.80 – 4.00 mm |
| Steel Wire Products | Steel cord, hose reinforcement wire, spring steel wire | φ0.15 – 3.00 mm |
| Communication Cable | Tinned copper wire, silver-plated copper wire, copper-clad steel wire | φ0.10 – 1.50 mm |
| Medical & Precision | NiTi wire, stainless steel micro-wire | φ0.10 – 0.80 mm |
| Shaped Wire | Rectangular copper wire, square steel wire, hexagonal steel wire | Customized per drawing |
Technical Specifications (Reference)
| Parameter | Range |
|---|
| Die Core Material | Polycrystalline Diamond (PCD) |
| Diamond Grit Size | 2 μm / 5 μm / 10 μm / 25 μm (selected based on wire diameter and surface finish requirements) |
| Bore Diameter Range | 0.05 mm – 12.00 mm (larger sizes available on request) |
| Bore Diameter Tolerance | ±0.001 mm (precision grade) / ±0.0025 mm (standard grade) |
| Ovality | ≤ 0.001 mm (precision grade) |
| Surface Roughness (Ra) | ≤ 0.02 μm inside bore (mirror polish) |
| Casing Material | Stainless steel / Titanium alloy / Cemented carbide (selected based on drawing force) |
| Operating Temperature | ≤ 700 ℃ (in air, limited by binder) |
Note: PCD die bore diameter, reduction angle, and bearing length can all be customized according to the customer’s drawing process.
