Основной каталог Kyocera 2021 - 2022 - страница 13

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Uncoated CERMETTN610/TN620 PV710/PV720MEGACOAT NANO CERMET A

Three attributes of the hybrid technology contributes to superior surface finish

and machining stability.

1 Excellent surface finish

  • Combining the conventional cermet bonded phase (nickel, cobalt)

Surface finish comparison Cutting conditions: Vc = 180 ~ 0 m/min (Constant rotational speed),

and the special high melting point metallic bonded phase (In-house evaluation) ap = 0.5 mm, f = 0.1 mm/rev, wet, CNMG120404 type, workpiece: C10

Provides high adhesion resistance to eliminate galling of the PV720 Competitor A

workpiece Specialized strengthening technology Surface finish High melting point ø49 ø0

“Hybrid bonded phase” High speed Conventional bonded phase

Low speedGoodBad
[µm][µm]
Surface roughness1010
(ø4 ~ ø15) 55
00
(Vc = 15 ~ 55 m/min)-5-5
High melting point metallic bonded phase-10-10
0 0.51 1.5 2 2.5 3 3.5 4 4.5 5 5.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 0.5

[mm] [mm] 2 Excellent fracture resistance Improved strength with uniform micro grain hard phase and superior compressive stress with high melting point bonded phase. This combina- tion yields greater fracture resistance.

Specialized strengthening technology Grain “hybrid hard phase” Compressive residual stress in hard phase (In-house evaluation) TN620 structure High

120 %

Low

Inner structureTN620Conventional micro
grain cermet R
3Excellent wear resistanceSpecialized strengthening technology
Special surface-hardened “hybrid structure”

Surface TN620 structure Inner

Excellent fracture resistance with surface-hardened layer High wear resistance Chipping and thermal shock resistance

using gradient composition technology

  • Continuously-varied hardness provides wear and fracture resistance 120

TN620

TN620’s inner structure has high toughness and chipping resistance along with thermal and

greater wear resistance than that of the conventional micro grain cermet. (See right chart)

Conventional S (In-house evaluation) 100

Distance from sintered body surface (mm)