HFR410 Diamond Coating | High-Performance Solution for PCB Micro Drills and Router Bits

For PCB manufacturers and precision machining industries, tool wear on micro drills and router bits is one of the main factors that affect yield and production stability. Huasheng Nanotechnology developed the HFR410 CVD diamond composite coating, engineered specifically for PCB micro drills, routing tools, and CFRP machining. With extreme hardness and excellent stability, HFR410 breaks through the limitations of high-wear materials.

1. Why Choose Diamond Coating? (Core Advantages)

Diamond is the hardest known material (70–100 GPa). The HFR410 NCD/MCD multilayer composite delivers:

Hardness above 80 GPa

Friction coefficient below 0.2

Exceptional adhesion and chemical stability

Outstanding wear resistance for FR-4, aluminum substrates, and CFRP

Superior thermal conductivity for edge sharpness retention

The result: longer tool life, better hole accuracy, and reduced burrs or delamination.

2. Proven Performance in Real Applications

1) PCB Micro Drills & Router Bits (Primary Application)

FR-4 glass fiber material causes severe tool abrasion. HFR410 forms a dense and uniform diamond layer to eliminate premature chipping and improve tool stability.

In 0.2 mm micro-hole PCB drilling, our diamond-coated micro-drills show an 8–15× life improvement over standard tools and a 30% increase in hole-size retention. Even after drilling 20,000 holes, tool wear remains below industry standards, significantly reducing yield loss caused by tool wear.

2) CFRP Cutting Tools

CFRP easily produces burrs and delamination during machining. HFR410’s sharp cutting behavior and low friction minimize thermal damage.

Results:

Burr-free, delamination-free machining

Tool life extended by up to 6×

Scrap rate reduced by 50%+

3. Why Huasheng Nanotechnology?

With a 3,000 m² coating facility, self-developed PVD/CVD systems, and 30+ dedicated coating machines, we provide complete tool-coating solutions:

Precision coating for micro drills

Custom coating thickness from 3–20 μm

Pre-treatment (degreasing, cleaning)

±0.001 mm calibration

Batch-level inspection and full process traceability

Each coating recipe is tailored to the customer’s cutting material and application to ensure stable, repeatable tool performance.

4. Conclusion

The HFR410 diamond coating significantly enhances tool life, improves machining quality, and reduces manufacturing cost. Huasheng Nanotechnology will continue advancing PVD/CVD technologies to empower PCB manufacturing, electronics production, and composite material machining.

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