Natural Diamond (ND) Wire Drawing Dies
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Description
Natural Diamond (ND) Wire Drawing Dies
Industrial Applications
Uking Diamond’s high-accuracy ND wire drawing dies are the industry standard for ultra-high-speed continuous drafting of premium micrometer-range filaments, specifically optimized for:
Semiconductor & Electronics: Ultra-fine Gold (Au) wire, Silver (Ag) wire, and Platinum (Pt) bonding wires.
Precious & Rare Metals: Pure Medical-grade Stainless Steel, Molybdenum (Mo), and Hot Tungsten (W) filaments.
High-Conductivity Conductors: Superfine Copper (Cu), Tinned Copper, Aluminum (Al), and specialized Copper-Aluminum Alloys.
Aerospace & Precision Instruments: Fine-line alloys requiring absolute circularity (zero ovality) over long-distance continuous extrusion.
Technical Specifications
| Physical & Geometric Parameters | Technical Control Standard Value |
| Material Grade | Premium Selected Type Ia Natural Diamond (ND) |
| Diameter Range | 0.015 mm – 1.200 mm (Ultra-fine micro range) |
| Material Density | 3.515 g/cm³ |
| Knoop Hardness | 90 – 100 GPa (The hardest known industrial material) |
| Thermal Conductivity | 2000 W/m·K (Excellent heat dissipation at high-speed drawing) |
| Hole Diameter Tolerance | ± 0.0001 mm – ± 0.0005 mm (Based on wire size) |
| Max Ovality Tolerance | ≤ 0.0005 mm (0.5 μm) for micro sizes |
| Inner Geometry Configuration | Customized Entrance, Reduction, Bearing, and Exit Angles per metal type |
Product Details
1. The Physics of Type Ia Natural Diamond Blanks
Unlike ordinary synthetic single crystals, the die blanks selected by Uking Diamond are exclusively sourced from premium, stringently inspected Type Ia Natural Diamonds. At the atomic level, these unique diamonds contain a well-regulated concentration of nitrogen impurities (approximately 0.1%).
Crucially, these nitrogen atoms do not exist as isolated impurities; instead, they naturally aggregate into small, synchronized atomic clusters (platelets). This specific aggregate structure acts as an internal crystalline reinforcement matrix. It drastically minimizes the natural cleavage tendency of single-crystal diamonds, providing Uking’s ND dies with exceptional structural toughness, superior photothermal properties, and unrivaled wear resistance.
2. Why Uking ND Dies Outperform Secondary Alternatives
Every natural diamond blank undergoes strict polarizing microscopy polarization tests to completely eliminate internal stress concentrations and micro-fractures before laser drilling and ultrasonic polishing.
Our proprietary nano-level mirror-finishing technology achieves a flawless inner channel surface. This zero-friction geometry prevents line tension spikes, completely eliminates wire scratching or shaving generation, and guarantees that your drawn wire remains perfectly round and geometrically stable even during long-run production campaigns.
Key Features
Unmatched Mirror Surface Finish: Produces a pristine, scratch-free surface on delicate electronic bonding wires, meeting the most critical aerospace and semiconductor quality criteria.
Guaranteed Wire Circularity (Zero Ovality): Even after millions of continuous rotations, the die hole maintains strict concentricity, ensuring the wire remains perfectly round over extended mileages.
Ultimate Thermal Dissipation: High thermal conductivity rapidly dissipates localized frictional heat generated at the reduction angle, preventing wire elongation breakage.
Extreme Wear Resistance for Long Runs: Drastically extends the service campaign lifespan compared to tungsten carbide or synthetic single-crystal dies, making it the most cost-efficient tool for high-value precious metals.
Are you experiencing wire breakage or surface ovality during ultra-fine wire drawing below 0.1mm?
As a leading superhard materials manufacturer based in Henan, China, Uking Diamond offers customized inner geometries (reduction angles and bearing lengths) tailored exactly to your wire tensile strength and machine drafting speed.
Contact our engineering team today to request a factory-direct quote or ask for a test sample (Sample Allocation Program available for verified wire manufacturers). Let’s elevate your micro-wire quality together!
