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TN620 / PV720 INSERT GRADES

TN620(CERMET)                                                                                                                                                                                        GRADES                     A
      for steel machining                                                                                                                                                                                                       B
                                                                                                                                                                                                     INSERTS                    C
PV720 (MEGACOAT NANO CERMET)                                                                                                                                                                                                    E
      for steel machining                                                                                                                                                                            CBN & PCD                  F
                                                                                                                                                                                                                                G
SURFACE HARDENED “HYBRID STRUCTURE”                                                                                                      TN620’s inner structure has high toughness and chipping     TURNING                    H
                                                                                                                                         resistance along with thermal shock resistance. TN620 has                              J
                          Surface-Hardened Hybrid Structure                                                                              a higher hardness and greater wear resistance than that of  BORING                     L
                                                                                                                                         the conventional micro grain cermet.                                                   M
                                                                                                               Surface Structure                                                                                                P
                                                                                                                (High Hardness Cermet)                                                               GROOVING                   R
                                                                                                                • High wear resistance                                                                                          T

                                                                                                               Inner Structure
                                                                                                                (High Toughness Cermet)
                                                                                                                • Chipping and thermal

                                                                                                                   shock resistance

                                                             (Internal Evaluation)

                                                                                                                                                                                                     CUT-OFF

EASY TO VIEW CUTTING EDGE WEAR                                                                                                                                                                       THREADING SOLID END MILLS

PV720 improves performance by adopting composite lamination of MEGACOAT NANO and special TiN to
combine high adhesion resistance and great visibility of the used cutting edge even in dim light.

Wear Resistance Comparison

                            Cutting Conditions                                      PV720                                                                       Competitor A
                            Workpiece : 4137 Steel
                            Vc = 820sfm
                            D.O.C. = 0.039”
                            f = 0.008ipr : Wet
                            Insert: CNMG432PQ

                                                                                                                                                                                                     MILLING

                                                                                        Competitor B                                                            Competitor C

                                                                                    Flank wear condition after                                                                (Internal Evaluation)  SPARE PARTS
                                                                                    machining 48 minutes.

EASY TO VIEW CUTTING EDGE WEAR                               TN620 Structure                                                                                                                         TECHNICAL

Improved strength with uniform micro grain hard phase and
superior compressive stress with high melting point bonded
phase. This combination yields greater fracture resistance.

                                                             Surface Structure                                                           Inner Structure

Fracture Resistance Comparison                                                                                                                                                (Internal Evaluation)  INDEX

                                                                                                                                         Cutting Conditions
                                                                                                                                         Workpiece : 1045 Structural Steel
                                                                                                                                         Vc = 820sfm
                                                                                                                                         D.O.C. = 0.039”
                                                                                                                                         f = 0.008ipr : Wet
                                                                                                                                         Insert: CNMG432PQ

                                                                                                                                         (Internal Evaluation)

                            kyocera@kyocera-tools.ru                                                                                                                                                 A13
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