Processing of Superhard Materials —— Precision Engineering Solutions for Ultra-Hard Substrates
Processing superhard materials—such as Chemical Vapor Deposition (CVD) diamond, Polycrystalline Diamond (PCD), Cubic Boron Nitride (PCBN), and technical ceramics—presents extreme manufacturing challenges due to their incredible hardness, brittleness, and thermal sensitivity. Our Processing of Superhard Materials services offer advanced, ultra-precision machining solutions. Utilizing cutting-edge laser processing, Wire Electrical Discharge Machining (WEDM), and high-shear diamond grinding, we transform superhard materials into complex, tightly-toleranced industrial components and cutting tools.
Processing Technologies & Capabilities
We offer a comprehensive suite of advanced material processing technologies tailored to the specific mechanical properties of superhard substrates:
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Pico & Femtosecond Laser Processing: Ultra-short pulse lasers cut, drill, scribe, and 3D-shape diamond and PCBN without thermal damage, micro-cracking, or heat-affected zones (HAZ).
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Precision WEDM & EDG (Electrical Discharge Grinding): High-precision spark erosion processes designed for conductive superhard composites (such as PCD and PCBN), delivering complex profiles and clean cutting edges.
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Ultra-Precision Diamond Grinding & Lapping: Multi-axis CNC grinding utilizing high-density diamond wheels to achieve tight dimensional tolerances ($le pm 0.001 text{mm}$) and mirror surface finishes.
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Laser Edge Preparation & Polishing: Micro-geometry edge honing and laser polishing to achieve razor-sharp cutting edges and ultra-low friction surfaces.
Key Advantages
1. High Precision for Extreme Substrates
Overcomes the processing limits of traditional machining methods, allowing for intricate geometries, micro-holes, sharp internal corners, and complex 3D profiles on materials with hardness exceeding $3000 sim 10000 text{HV}$.
2. Zero Thermal Damage & Intact Microstructure
Ultra-short pulse laser machining eliminates thermal stress and oxidation, preserving the inherent hardness, thermal conductivity, and fracture toughness of the superhard substrate.
3. Superior Surface Quality & Edge Sharpness
Achieves sub-micron surface roughness ($Ra le 0.01 mutext{m}$) and chip-free edge sharpness, reducing friction, tool wear, and material adhesion in high-load applications.
4. Custom Prototyping to Mass Production
Flexible manufacturing workflows support everything from single-piece custom prototyping and tool re-sharpening to high-volume automated production runs.
Workable Superhard Materials
| Material Type |
Material Hardness |
Primary Applications |
| PCD (Polycrystalline Diamond) |
$5000 sim 8000 text{HV}$ |
Non-ferrous metal cutting tools, wear parts, wire drawing dies |
| PCBN (Polycrystalline Cubic Boron Nitride) |
$3000 sim 4500 text{HV}$ |
Hardened steel machining tools, cast iron rolls, high-temp wear plates |
| CVD / Single Crystal Diamond |
$8000 sim 10000 text{HV}$ |
Optical windows, heat spreaders, ultra-precision turning tools |
| Advanced Technical Ceramics |
$1500 sim 2800 text{HV}$ |
Structural components, seal rings, semiconductor equipment parts |
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Processing of superhard materials Images
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