PCD Cutting Tool Blanks (Polycrystalline Diamond Discs) - PCD Cutting Tool Blanks

PCD Cutting Tool Blanks (Polycrystalline Diamond Discs)

UKing Diamond’s HPHT sintered PCD cutting tool blanks and pre-cut PCD segments provide exceptional wear resistance, thermal stability, and zero delamination performance for precision cutting tool manufacturing applications.

Request a Quote

Enter the quantity you need and add to your quote list for pricing inquiries.

Quantity:

Categories: PCD Cutting Tool Blanks

Description

Industrial Applications

Uking Diamond’s ultra-dense Polycrystalline Diamond (PCD) tool blanks provide optimized cutting vectors for extreme continuous machining, heavily adopted in global supply chains for:

High-Silicon Aluminum Alloys: Critical automotive engine blocks, pistons, and aerospace turbine housings (e.g., Al-Si grades with >12% Si content).

Advanced Composites: Clean, burr-free milling of Carbon Fiber Reinforced Plastics (CFRP), Glass Fiber Composites (GFRP), and honeycombs.

Abrasive Woodworking: High-speed profiling of MDF, HDF, particle boards, and laminated hardwood without edge chipping.

Non-Metallics & Ceramics: Machining of green ceramics, graphite electrodes, sintered plastics, and abrasive rubber compound components.

Technical Specifications & Grain Selection

PCD Grade & Grain Size	Primary Characteristics	Hardness / TRS	Ideal Application Scenario
Ultra-Fine (1μm – 2μm)	Extreme cutting edge sharpness; low chipping susceptibility	6,000 – 6,500 HV / TRS ≥ 2.4 GPa	Mirror-finish machining, precious metals, titanium, non-metal optics
Medium Fine (5μm – 10μm)	Universal grade balancing superior wear resistance & tough edges	7,000 – 8,000 HV / TRS ≥ 2.2 GPa	General non-ferrous turning, standard aluminum alloys, wood, plastics
Coarse Heavy-Duty (25μm)	Supreme abrasion resistance; highly resistant to severe erosion	8,500 – 10,000 HV / TRS ≥ 1.8 GPa	High-silicon aluminum (>12% Si), bi-metal components, abrasive graphite
Multi-Modal (Mixed Grain)	Ultra-dense packing structure optimizing both impact & fracture toughness	Up to 10,000 HV / TRS ≥ 2.5 GPa	Interrupted cuts, heavy-loaded milling, CFRP/GFRP aerospace composites

Geometric Configurations

Material Architecture: Polycrystalline Diamond Layer permanently bonded to a rigid Tungsten Carbide (WC) support substrate.

Available Outer Diameters: Ø10 mm up to Ø65 mm (Standard stock includes Ø50mm, Ø60mm, and laser pre-cuts).

PCD Layer Depth Options : 0.2mm, 0.5mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm (Fully customizable).

Pre-Cut Geometries: Triangles, rectangles, squares, semi-circles, pentagons, and complex tailored profiles via EDM/Laser.

Product Details

1. Ultra-Dense HPHT Sintering Grid & Zero Delamination

Generic PCD blanks often suffer from premature layer delamination (the diamond separating from the carbide base) during laser-cutting or intense interrupted cutting shocks. At Uking Diamond, our blanks are processed under multi-gigapascal Ultra-High Pressure and High Temperature (HPHT) environments.

Through precise cobalt-solvent catalyst infiltration control, we achieve an absolute chemical-metallurgical bond at the interface. The diamond-to-diamond (D−D bonding) mesh grid combined with the carbide support layer guarantees excellent impact resistance, eliminating structural delamination even under high-feed continuous tooling lines.

2. Advanced Micro-Morphology for Extended Tool Lifespan

Our proprietary diamond particle grading tech eliminates uneven catalyst pooling inside the PCD matrix. This translates to an ultra-homogeneous layer featuring excellent thermal conductivity (∼500–1000 W/m⋅K).

When running high-speed CNC machinery, heat is rapidly evacuated from the critical cutting tip zone, preventing thermal graphitization of the diamond. Your factory gets stable edge retention, zero burrs on workpiece surfaces, and a massive reduction in tool change frequency compared to traditional carbide or HSS tooling.

Key Features

Flawless Cutting Edge Integrity: Superior micro-structural homogeneity allows tool manufacturers to achieve razor-sharp cutting profiles via laser or wire-EDM without micro-chipping.

Unmatched Thermal Graphitization Resistance: Superior heat dissipation capacity preserves the diamond lattice structure even under intense operational limits, enabling aggressive cutting speeds.

Highly Configurable Substrate Depth: Tailored combinations of carbide backing thickness and PCD depth to withstand specific vibration frequencies in automated milling centers.

Rigorous Non-Destructive Ultrasonic C-Scan Inspection: Every single disc is mapped via ultrasonic C-scan to ensure 100% internal bonding consistency before shipping.

Ready to Eliminate Premature Tool Failure? Secure Your Risk-Free Test Sample Today!

At Uking Diamond, we back our multi-modal sintering technology and nano-mirror finishing with 20 years of global engineering authority. We don’t expect you to take our word for it—we want you to experience the performance leap on your own production line, 100% risk-free.

Send us your engineering drawings (PDF/.DXF/.STEP) and machine parameters right now. Our technical team will review your geometric tolerances and allocate a Free Tailored Sample Batch matching your exact tensile strength and processing speed requirements.

FAQ

Q: What are PCD cutting tool blanks and who uses them?

A: PCD cutting tool blanks are standard or custom-shaped HPHT-sintered polycrystalline diamond layers bonded to tungsten carbide substrates, supplied to cutting tool manufacturers for wire-EDM cutting, laser cutting, or grinding into finished insert geometries. End users are tool manufacturers who produce custom PCD inserts, router bits, reamers, or special profiles for aerospace, automotive, or woodworking applications. Blank formats include round discs (standard diameters: 38 mm, 52 mm, 58 mm, 74 mm), rectangular segments (various sizes), and semi-finished ground blanks in ISO insert shapes (CCGW, DCGW, etc.) ready for edge preparation. Diamond layer thickness ranges from 0.5 mm to 4.0 mm depending on tooling application and required number of regrind cycles.

Q: What PCD grain grades are available in blanks and how does grain size affect cutting tool performance?

A: Uking Diamond PCD blanks are available in three grain size classifications:

(1) Sub-micron / ultra-fine grade (<1 μm): maximum edge sharpness, lowest surface roughness on finished workpiece; best for mirror-finish aluminum, optics, and printed circuit board routing.

(2) Medium grain (5–10 μm): balanced sharpness and fracture toughness; standard for aluminum alloy turning, CFRP routing, and general non-ferrous machining.

(3) Coarse grain (25–50 μm): maximum fracture toughness and wear resistance in high-silicon abrasive materials, stone cutting, and interrupted cuts.

Grain size selection is a trade-off: finer grain provides sharper, smoother edges; coarser grain resists chipping in aggressive interrupted cuts. Mixed-grade and functionally graded blanks (coarse base, fine surface) are also available on request.

Q: How are PCD blanks cut into finished insert shapes and what tolerances are achievable?

A: PCD blanks are cut using wire EDM (electrical discharge machining) or laser cutting to produce insert profiles. Wire EDM produces clean cuts with minimal heat-affected zone; it is the standard method for ISO insert geometries and custom profiles requiring ±0.01 mm dimensional tolerance. Laser cutting is faster but introduces a thin thermally affected surface layer (~5–20 μm) that is removed by subsequent grinding. After profile cutting, insert edges are finished by diamond grinding wheels to achieve the required rake angle, clearance angle, and edge preparation (sharp, hone, or T-land). Final insert dimensional tolerances: profile ±0.02 mm, thickness ±0.05 mm, edge radius ±0.005 mm.