Diamond-coated cutting inserts

These inserts effectively enhance the tool’s surface wear resistance and oxidation resistance, suppress built-up edge formation, ensure smooth cutting, maintain stable machining accuracy, and resist chipping and wear. They are ideal for milling, engraving, and finishing operations on difficult-to-machine materials such as graphite, non-ferrous metals, ceramics, hard composite materials, and PCB substrates—significantly extending tool life, reducing tool change frequency and production costs, while balancing machining efficiency and surface finish quality. These inserts are widely used in precision mold manufacturing, electronics and industrial control, new energy, dental processing, and stone carving industries.

Feature

• Ultra-high hardness: Vickers hardness of 9,000–10,000 HV, approaching that of natural diamond and 8–10 times higher than that of cemented carbide.
• Ultra-high wear resistance: Exceptional wear resistance, extending service life to 10–70 times that of conventional cemented carbide inserts.
• Low coefficient of friction: Coefficient of friction approximately 0.05–0.1, significantly reducing cutting resistance and heat generation.
• High thermal conductivity: Thermal conductivity of approximately 2,000 W/(m·K), 20 times higher than that of cemented carbide, enabling extremely rapid heat dissipation.
• Chemical inertness: Resistant to acids, alkalis, and oxidation; does not react chemically with aluminum, copper, graphite, or composite materials.
• Uniform and controllable coating: CVD process enables formation of a uniform 1–30 μm coating on complex cutting edges, suitable for various shaped inserts.

Tool Type Comparison Table