In the field of superhard material processing, diamond wire drawing die cores have become the core component of the wire drawing process due to their extreme hardness and precision performance. Henan Tianyou Superhard Materials Co., Ltd. (JCB Diamond), as a benchmark enterprise in the industry, has been deeply engaged in this field for over 20 years, launching four major categories of diamond wire drawing die core products. These cover the full range of processing needs from ordinary wire to high-end precision wire, with their manufacturing processes, product characteristics, and application scenarios each having unique advantages, providing precise solutions for the global manufacturing industry.
Four Core Categories: Dual Breakthroughs in Manufacturing Process and Technical Characteristics
1. Polycrystalline Diamond (PCD) Wire Drawing Die Cores
In terms of manufacturing process, diamond micropowder is used as the raw material, sintered under high temperature and high pressure with a metal catalyst (cobalt). Based on structure, they are divided into three types: non-reinforced ring type, reinforced ring type with carbide, and high-temperature resistant type. In production, the particle size of the diamond micropowder (1-50 microns) can be adjusted to match different wire surface quality requirements. The finished products are precisely formed through processes like laser drilling and sizing grinding.
2. Single Crystal Diamond (Mono/SSCD) Wire Drawing Die Cores
Using synthetically grown 111-face man-made single crystal diamond as the base material under controlled conditions, these are meticulously crafted through multiple processes including lathe processing, outer diameter grinding, shaping, and polishing. JCB Diamond provides both high-quality domestic single crystal die cores and imported single crystal die cores from Element Six (Ireland). Strict impurity control and crack detection ensure product consistency and stability.
3. Natural Diamond (ND) Wire Drawing Die Cores
Selected natural diamond rough stones are used as raw material, processed through meticulous selection and screening (free of impurities and cracks), laser cutting and drilling, and precision polishing of the inner hole. The natural crystal structure of natural diamond gives the die core ultimate performance. Processing requires real-time monitoring of the inner hole precision using an optical microscope, with final roundness verification using a French CERSA-MCI wire diameter gauge.
4. Nano-Coated (Diamond Coated) Wire Drawing Die Cores
Using tungsten carbide (hard alloy) as the substrate, after die modification pretreatment, multiple layers of micro-nano diamond film are coated using ultra-high vacuum equipment. The substrate is made by composite sintering of tungsten carbide particles and metallic cobalt. The coating process requires precise control of vacuum degree and temperature to ensure strong adhesion between the diamond film and the substrate, significantly improving wear resistance.
Category Differentiation: Precise Identification Across Four Dimensions
Material & Structure: PCD cores have a polycrystalline sintered structure; single crystal and natural diamond cores have a single crystal structure; nano-coated cores feature a composite "tungsten carbide substrate + diamond coating" structure. Distinguishable by observing crystal morphology under an optical microscope.
Aperture Range: PCD cores cover 0.05-8.0mm; single crystal and natural diamond cores range 0.01-1.3mm; nano-coated cores can reach 0.05-35mm. Aperture can be accurately detected using Norwegian Conoptica CU-10/CU-11 laser measuring instruments.
Performance Characteristics: Natural diamond cores have the highest thermal conductivity (withstand up to 1700°C); single crystal cores have the lowest friction coefficient; PCD cores are suitable for long-term continuous production; nano-coated cores combine high hardness with cost advantages.
Applicable Scenarios: Quick matching based on wire material (soft/hard), precision requirements, and processing technology (dry/oil/wet drawing). For example, precious metal wire processing prioritizes natural or single crystal cores; large diameter stainless steel wire processing suits nano-coated cores.
Multi-Industry Deep Application: Core Tools Supporting Precision Machining
JCB Diamond's wire drawing dies, with their precise performance, are widely used in nine core areas, becoming the "precision tool" in key processing stages:
Electronics Industry: Used for silicon wafer cutting wire and bonding wire drawing. Single crystal and natural diamond cores ensure wire diameter tolerance is controlled at the micron level, meeting the precise assembly needs of semiconductor devices.
New Energy Sector: Solar panel conductor processing uses PCD cores. Their high temperature resistance suits continuous production scenarios, improving conductor conductivity and stability.
Medical Components: Drawing precision alloy wires for medical applications selects natural diamond cores, using precision die gauges to ensure wire roundness, meeting the biocompatibility requirements of implantable devices.
Automotive & Machinery Industry: Processing of spring wire, steel cable, and welding wire uses nano-coated or PCD cores. Wear resistance extends die life, adapting to the large-scale production of automotive wiring harnesses.
Precious Metal Processing: Drawing of gold, silver and other precious metal wires prioritizes single crystal cores. Low friction coefficient prevents wire surface scratches, ensuring the conductive performance of jewelry and electronic components.
Wire & Cable Industry: Processing of high, medium, low voltage cables and automotive wires is supported by stranding/bunching dies (PCD or carbide material), precisely compacting the conductor structure and improving cable transmission efficiency.
As a high-tech enterprise integrating R&D, production, and sales, JCB Diamond, with its 304 stainless steel and titanium alloy shell processing technology, laser drilling forming technology, and full-process quality control system (including optical microscopes, laser measuring instruments and other precision detection equipment), continues to promote the technological iteration of diamond wire drawing die cores. Its products not only cover traditional fields such as stone processing, construction, and energy extraction but also achieve breakthroughs in high-end sectors like electronics, medical care, and new energy, adhering to the core philosophy that "Precision is the Mission" to provide Chinese solutions for superhard material processing to the global manufacturing industry.
