Premium Tungsten Carbide Extrusion & Drawing Dies for Flat & Shaped Wires | EV Hairpin & Magnet Wire
$37.98
Product Overview
Achieve sub-micron dimensional consistency and mirror-like surface quality in high-speed metal forming with Panda Carbide Technology’s Precision Tungsten Carbide Extrusion and Wire Drawing Dies. Specially engineered for flat copper wire, enamelled magnet wire, aluminum strips, and special shaped alloy profiles, these high-density carbide dies excel in continuous extrusion (Conform) machines and cold drawing benches.
Manufactured from 100 % virgin micrograin tungsten carbide nibs encased in stress-relieved steel tool holders, our extrusion dies deliver extreme wear resistance (HRA 88.0 - 91.5) and superior transverse rupture strength. Designed to withstand extreme mechanical pressure and frictional heat, Panda Carbide dies eliminate wire distortion, micro-scratching, and premature dimensional expansion in heavy-duty wire processing.
Target Keywords: Tungsten carbide extrusion dies, flat copper wire drawing dies, carbide shaped wire drawing dies, EV hairpin motor wire extrusion dies, tungsten carbide nib inserts, continuous extrusion dies, carbide cold drawing tooling.
📩 Request a Free Quote
⚠️ Core Unique Selling Proposition (USP): Stress-Relieved Binders & Sub-Micron Lapped Channel Geometry
In flat copper and EV motor wire production, even microscopic die wear causes severe wire thickness variation, leading to insulation breakdown and electrical motor winding failure. Panda Carbide addresses these processing risks through advanced metallurgy:
HIP-Sintered Ultra-Dense Substrate: Formulated with coarse/medium tungsten carbide grain configurations paired with optimized cobalt binder ratios ( 6 % - 12 % ). Overpressure HIP (Hot Isostatic Pressing) sintering eliminates internal micro-porosity, guaranteeing high fatigue strength against cyclic hydraulic pressure.
Sub-Micron Mirror-Lapped Land ( Ra ≤ 0.05 μm ): Die channels and bearing lands are precision-ground on 5-axis optical profile grinders and mirror-lapped using diamond compounds. This ultra-smooth contact surface drastically lowers friction, prevents copper galling/pickup, and reduces drawing force required by up to $20\%$.
Interference Shrink-Fit Steel Enclosure: Carbide nib inserts are shrink-fitted into high-tensile alloy steel casings (such as H13 or 42\text{CrMo} ) under precise thermal interference calculations. This pre-stressed casing absorbs radial bursting forces, preventing carbide cracking under heavy extrusion loads.
1. Technical Specifications & Mechanical Tolerances (Engineering Guide)
To support global wire drawing and continuous extrusion equipment, Panda Carbide enforces strict geometric tolerances:
2. Strategic Application Scenarios & Substrates
Panda Carbide’s extrusion and flat wire drawing dies serve critical supply chains across major global manufacturing hubs:
EV Hairpin Drive Motors: Continuous extrusion and precision cold drawing of high-purity oxygen-free copper (OFC) flat wires used in electric vehicle stator windings.
Transformers & Power Distribution: Sizing paper-wrapped and enamelled copper/aluminum rectangular conductors for power transformers.
Photovoltaic & Solar Energy: Drawing ultra-flat copper ribbon wires used in PV module busbars.
Industrial Fasteners & Stainless Steel: Cold drawing stainless steel flat wires, key stock, and shaped alloy profiles for industrial hardware.
3. Advanced Technical Solutions & Engineering Guidelines (FAQ)
Q: How does Panda Carbide prevent copper galling and material pickup inside flat wire drawing dies?
A(Surface Physics): Metal pickup (galling) occurs when localized friction heat and high contact pressure cause soft copper particles to fuse onto microscopic surface valleys inside the die channel. Panda Carbide eliminates galling by diamond-lapping the carbide bearing land to an optical mirror finish ( Ra ≤ 0.05 μ ) and applying optimized entry approach angles ( 12 ° - 16 ° ). This ultra-smooth topography allows drawing lubricants to form a continuous hydrodynamic film, preventing direct copper-to-carbide metal fusion.
Q: Why is thermal interference shrink-fitting essential for carbide continuous extrusion dies?
A: During continuous extrusion (Conform process), internal radial pressures inside the die cavity can exceed 1000 MPa. Because tungsten carbide exhibits extremely high compressive strength but lower tensile strength, an unreinforced carbide nib would fracture under hoop stress. Panda Carbide shrink-fits the carbide nib into a pre-heated alloy steel casing. As the casing cools, it exerts a uniform compressive pre-stress on the carbide insert, neutralizing internal tensile forces during operation and extending die lifespan by up to 300 % .
4. Full Customization & Blueprint Confidentiality (OEM / ODM)
Panda Carbide Technology CO., LTD. offers complete OEM/ODM production based on your exact die casing standards and wire geometry:
Custom Entrance / Exit Angles: Optimized approach angles and back relief angles tailored for dry/wet wire drawing lubricants.
Single & Multi-Slot Configurations: Single-cavity or dual-slot dies (as pictured) engineered for synchronized multi-strand extrusion lines.
📩 Contact us today for bulk wholesale inquiries or custom requests.
Strict NDA Protection: Send us your technical drawings (DWG, STEP, DXF) for instant engineering review and rapid prototyping.
