ZZST tungsten carbide dies are high-precision tooling components designed for continuous, high-speed wire drawing processes. Manufactured from ultra-fine grain WC-Co alloy (typically 94% W, 6% Co) with precisely controlled hardness (HRA 89–93), these dies deliver exceptional resistance to abrasive wear, thermal deformation, and mechanical fatigue — ensuring consistent wire diameter accuracy and surface finish over tens of thousands of meters drawn.
Produced in Zhuzhou — China’s “Tungsten Capital” — each die undergoes rigorous CNC machining, precision grinding, ultrasonic cleaning, and 100% outgoing inspection (including video verification). Fully customizable in bore geometry (round, oval, square, hexagonal), taper angle, reduction ratio, and surface finish (Ra ≤ 0.02 μm), ZZST dies empower OEMs and tier-1 wire producers to optimize throughput, reduce scrap rates, and extend die change intervals.
Sub-micron tolerance control (±0.002 mm) across bore diameter, concentricity, and entry/exit radii — enabled by 5-axis CNC machining and in-process metrology.
Ultra-fine grain tungsten carbide (0.4–0.6 μm) with optimized cobalt binder ensures 3–5× longer service life vs. standard grade dies under identical wire drawing conditions.
From single prototype to bulk OEM runs: custom bore shapes, multi-stage reductions, coatings (TiN, DLC), and packaging per client specification — lead time from design approval: 7–12 days.
High-speed dry/wet drawing lines for copper, aluminum, stainless steel, and specialty alloys (e.g., Inconel, titanium).
Precision wire for ignition cables, sensor leads, airbag igniters, and turbine cooling ducts requiring zero dimensional drift.
Fine-gauge enameled wire, magnet wire, and bonding wire production where surface integrity and roundness are critical.
| Parameter | Value |
|---|---|
| Material | WC-Co (94% Tungsten Carbide / 6% Cobalt) |
| Hardness | HRA 89–93 |
| Density | 14.9–15.2 g/cm³ |
| Bore Shape | Customized (Round, Oval, Square, Hexagonal, etc.) |
| Size Range | Φ0.02 mm – Φ12.0 mm (custom up to Φ25 mm) |
| Surface Finish | Ra ≤ 0.02 μm (polished bore) |
| Process | CNC Machining + Precision Grinding + Ultrasonic Cleaning |
| Application | Wire Drawing Machine (Copper, Aluminum, Steel, Specialty Alloys) |
| Weight (Typical) | 2.0 kg |
| Origin | Zhuzhou, China |
Each WC-Co billet batch is accompanied by full metallurgical report (composition, grain size, density, hardness) traceable to ISO/IEC 17025 accredited lab.
CMM (Coordinate Measuring Machine) checks at three stages: pre-grinding, post-grinding, final inspection — reporting bore diameter, concentricity, and taper angle.
100% visual inspection under 10x magnification + video recording of bore surface and dimensional verification — delivered with every order.
Share your wire drawing line specs, material flow rate, and target wire properties — our application engineers will co-design the optimal die geometry, coating, and heat treatment profile.
Anti-static foam-lined rigid cartons (5×3×5 cm per unit); palletized export packaging; DHL/FedEx express or sea freight options with real-time tracking and customs documentation support.
1-year warranty against manufacturing defects; lifetime technical consultation; rapid replacement for verified quality issues (within 48h response).
All ZZST tungsten carbide dies are produced under ISO 9001:2015 certified manufacturing systems. Material certificates and test reports comply with ASTM B313 and GB/T 3850 standards.
Yes. We offer TiN (Titanium Nitride), TiCN (Titanium Carbonitride), and DLC (Diamond-Like Carbon) coatings upon request — enhancing lubricity, reducing friction coefficient, and extending die life in aggressive drawing applications.
Yes. Standard size samples (Φ0.5–Φ3.0 mm) are available within 5 working days. Custom geometry samples require 7–10 days and may incur a nominal engineering fee (fully credited against first bulk order).
Provide us with your current die holder type (e.g., S-type, V-type, H-type), mounting dimensions, and wire feed parameters. Our team will verify mechanical fit and recommend optimal reduction ratios and bore profiles.
Trusted by 120+ industrial clients across 32 countries since 2012.
