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Reaming tools \ Technical introduction – reaming

                      Coatings for reamers


        Titanium nitride                                     Titanium carbon nitride
         Long proven standard layer                            Very high hardness
         High hardness                  TiN                    High adhesive strength      TiCN
         Very good adhesive strength                           Relatively high thermal conductivity

         Suffi cient toughness                                   Low friction coeffi cient against steel

         Affordable universal layer                             Vickers hardness: 3500 HV

         Vickers hardness: 2200 HV                             Friction coeffi cient of steel: 0.2


         Friction coeffi cient of steel: 0.5                     Temperature resistance: 400°
         temperature resistance: 600°                          Colour: blue-grey
         Colour: gold                                          Coating process: PVD
         Coating process: PVD
        titanium aluminium nitride                           Titanium aluminium carbon nitride
         universal layer for high-performance                Universal layer for high-performance
         machining with high cutting speed   TiAlN            machining with high cutting speed   TiAlCN
         marked thermal and chemical stability               Low friction
         very high hardness                                  Very high hardness
         very good heat resistance                           High oxidation resistance
         relatively low thermal conductivity                 Relatively low thermal conductivity
         Vickers hardness: 3200 HV                           Vickers hardness: 3500 HV

         friction coeffi cient of steel: 0.55                  Friction coeffi cient of steel: 0.20

         temperature resistance: 900–1000°                   Temperature resistance: 800°
         colour: dark blue-grey                              Colour: antique pink
         coating process: PVD                                Coating process: PVD
        titanium aluminium silicone nitrides
         high-performance cutting for machining very
         abrasive or hard materials such as steel up to  TiAlSiN
         63 HRC
         very high hardness
         high wear resistance
         Vickers hardness: 3500 HV

         friction coeffi cient of steel: 0.70
         temperature resistance: 900°
         colour: blue-violet
         coating process: PVD

                       Flute shapes and applications for reamers



        straight flute                                       le�-twisted flute


         for blind holes                                    For through-bores
         chips are transported backwards                    chips are transported forwards
         larger chip angle                                  better with intermittent cuts
                                                             reduced chip angle





























       Source: Hahn+Kolb Werkzeuge GmbH
       Technical data subject to change.             www.iconridge.com
       Availability subject to country specific rules and regulations.                           82

   0158_EN_2018_KERN[21846863]-k.indd  158                                                            12/17/2018  3:30:59 PM
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