Ceramic Insert, Ceramic Cutting Tools

Specification
Ceramic Tool TypesCeramic grade tools are typically classified into three general categories: oxide, nitride, and matrix ceramics.

All ceramic cutting tools have excellent wear resistance at high cutting speeds.There is a range of ceramic grades available for a variety of applications.

Oxide ceramics are aluminum oxide-based (Al2O3), with added zirconia (ZrO2) for crack inhibition. This generates a material that is chemically very stable but lacks thermal shock resistance.

(1) Mixed ceramics are particles reinforced through the addition of cubic carbides or carbonitrides (TiC, Ti(C, N)). This improves toughness and thermal conductivity.

(2) Whisker-reinforced ceramics use silicon carbide whiskers (Siew) to dramatically increase the toughness and enable the use of coolant. Whisker-reinforced ceramics are ideal for machining Ni-based alloys.

(3) Silicon nitride ceramics (Si3N4) represent another group of ceramic materials. Their elongated crystals form a self-reinforced material with high toughness. Silicon nitride grades are successful in gray cast iron, but a lack of chemical stability limits their use in other workpiece materials. 

Applications of silicon nitride ceramic cutting tools

Auto parts processing

Bearing machining

Hard cast iron processing

Other fieldsIn the fields of machinery, metallurgy, mining, railway locomotive, aerospace, precision instruments, molds, etc., the technology can be reformed by using silicon nitride ceramic cutting tools to greatly improve production efficiency, save energy and reduce cost.