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From Cutting Tool Engineering

Turning to hybrid

Kyocera Corp. brings a surface-hardening hybrid structure to a cermet substrate by combining conventional cermet and a metal-bonded phase with a high melting point. This reduces the likelihood of chips adhering to an insert during machining and provides a stable, machined surface to extend tool life and improve surface finishes, according to the Japanese toolmaker.

January 15, 2015By Alan Richter

Kyocera Corp. brings a surface-hardening hybrid structure to a cermet substrate by combining conventional cermet and a metal-bonded phase with a high melting point. This reduces the likelihood of chips adhering to an insert during machining and provides a stable, machined surface to extend tool life and improve surface finishes, according to the Japanese toolmaker.

The new TN620- and PV720-grade inserts have a tough cermet with enhanced resistance to chipping and thermal shock for the internal structure and a cermet with a hardness from about 1,800 to 1,900 HV for the surface structure, noted Eric Jenkins, senior applications engineer for Kyocera Precision Tools Inc. By enhancing hardness and toughness, the hybrid cermet inserts reportedly improve abrasion and fracture resistance by 50 percent compared to the company’s conventional cermet inserts.

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Courtesy of Kyocera

Kyocera reports that its TN620 (silver) and PV720 (gold) hybrid cermet inserts provide a 50 percent improvement in abrasion and fracture resistance compared to the company’s conventional cermet grades.

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Courtesy of Kyocera

The metal-bonded phase in hybrid cermet inserts from Kyocera is shown in green.

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