Comparison of performance and application of cermet cutting tools, ceramic cutting tools and cubic boron nitride cutting tools

(1) Compare the relationship between the development of tool materials and the high-speed machining (as shown in the figure below) : in the field of black metal processing: cubic boron nitride tool > ceramic tool > cermet tool.

(2) The hardness of the processed workpiece is compared: cubic boron nitride tool (processing hardness above HRC45) > ceramic tool (processing hardness between HRC40-HRC55 finishing) > cermet tool (processing hardness below HR45 semi-finishing and finishing).

(3) From the cutting speed and hardness of different tool materials: cubic boron nitride tool > ceramic tool > cermet tool (in the field of processing ferrous metals); Such as cubic boron nitride cutting tool BN-S30 material can be more than 1700m/min high-speed milling gray cast iron engine cylinder block; High concentration cubic boron nitride tool brand such as BN-K1 can be processed HRC79 tungsten carbide hardness.

(4) From the tool material toughness: cermet > cubic boron nitride (CBN) > ceramic tool (as shown below); Some special cases are as follows, for example, the non-metallic adhesive cubic boron nitride cutting tool developed in China can rough the blanks of high hardness and high alloy parts due to its excellent toughness, and can withstand intermittent cutting

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