Our CVD nano-diamond coating dies are high-efficiency alternatives to traditional tungsten carbide (TC) tools, widely applied in the global wire and cable industry for:

• Conductor Stranding & Drawing: High-speed shaping of non-ferrous electric lines.
• Conductor Compacting & Tight Pressing: Diameter reduction and flattening of overhead lines.
• Premium Material Processing: Optimized for soft pure aluminum, high-conductivity copper, and heavy-duty aluminum alloy wire profiling.
• High-Voltage (HV) Cable Production: Manufacturing core conductors for medium, high, and ultra-high voltage (UHV) power grids.

Product Details

1. Advanced Sintering & Nano-Surface Morphology

Uking’s stranding and compacting dies utilize advanced Chemical Vapor Deposition (CVD) technology to synthesis a uniform, ultra-dense nano-diamond composite coating directly inside the die core. The surface diamond features a precise grain size engineered at 20-50 nm. This nano-scale morphology creates a near-frictionless, mirror-polished inner channel that allows copper and aluminum conductors to glide smoothly at ultra-high drawing speeds without geometric deviation.

2. Resolving Material Adhesion & Ovality Phenomena

In standard aluminum and copper alloy stranding operations, traditional tungsten carbide (TC) dies fail quickly after just 25-30 km due to rapid thermal wear. This results in severe material adhesion (sticky aluminum/copper buildup), surface scratching, and hole-size expansion (ovality deformation), leading to immediate tool scrapping.

Uking’s CVD nano-diamond coating dies achieve a continuous production length of 1,000 km or more under identical equipment parameters. It completely eliminates material pickup, stabilizes core concentricity, and reduces the frequency of line changes by over 3500%.

3. Enhancing Cable Electrical Insulation & Withstand Voltage Pass Rates

Surface burrs generated during the compacting process are the fatal cause of electrical insulation failure in power cables. Conductor burrs trigger tip discharges (sharp-point discharges) inside the insulation layering of medium and high-voltage (MV/HV) cables, leading to catastrophic test failures.

By utilizing our ultra-low friction nano-diamond dies, the generation of surface burrs and line micro-scratches is completely suppressed. This breakthrough significantly minimizes partial discharge (PD) charges, ensures that special overhead conductors pass the high-voltage corona test, and drastically elevates your factory’s final with stand voltage test pass rate.

Key Features

• 1000KM+ Ultra-Long Campaign Life: Keeps your automated continuous stranding machinery running non-stop, eliminating costly tool-replacement downtime.
• Anti-Adhesion Chemical Isotropism: Zero chemical affinity to soft aluminum and aluminum alloys, completely eliminating material scraping, surface galling, and metal buildup.
• Partial Discharge (PD) Charge Reduction: Drastically smoothens the tight-pressed conductor profile, reducing the localized electric field stress in cables and ensuring premium dielectric safety.
• Energy-Saving Lower Friction: The microscopic diamond-to-metal low friction coefficient lowers drawing bench power consumption, protects pull-blocks, and enhances equipment lifespan.
• Seamless Hardware Retrofitting: Standard geometric control matching international stranding systems, perfectly replacing traditional carbide dies without machine modifications.

Struggling with material adhesion or failed high-voltage withstand tests caused by conductor burrs?

Traditional tungsten carbide dies fail rapidly within 25-30 km when processing soft aluminum or alloy wires, triggering severe sticky aluminum buildup and ovality. More critically, the resulting conductor burrs cause tip discharges, leading to catastrophic partial discharge (PD) test failures in your MV/HV cable lots.

Uking’s CVD nano-diamond coating dies guarantee a continuous campaign life of 1,000+ km, eliminating metal buildup and smoothing the tight-pressed profile to lower localized electric field stress.

Stop wasting money on premature tool scrapping. > Let our technical engineers optimize your compacting line parameters and help you secure a 100% pass rate in stringent corona and voltage tests.