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Reaming tools \ Technical introduction – reaming
Coatings for reamers
Titanium nitride
 Long proven standard layer
 High hardness TiN
 Very good adhesive strength
 Suffi cient toughness
 Aff ordable universal layer
 Vickers hardness: 2200 HV
 Friction coeffi cient of steel: 0.5
 temperature resistance: 600°
 Colour: gold
 Coating process: PVD
titanium aluminium nitride
 universal layer for high-performance
machining with high cutting speed TiAlN
 marked thermal and chemical stability
 very high hardness
 very good heat resistance
 relatively low thermal conductivity
 Vickers hardness: 3200 HV
 friction coeffi cient of steel: 0.55
 temperature resistance: 900–1000°
 colour: dark blue-grey
 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 fl ute
 for blind holes
 chips are transported backwards
 larger chip angle
Source: Hahn+Kolb Werkzeuge GmbH
Technical data subject to change.
Availability subject to country specific rules and regulations.
0158_EN_2018_KERN[21846863]-k.indd 158
Titanium carbon nitride
 Very high hardness
 High adhesive strength TiCN
 Relatively high thermal conductivity
 Low friction coeffi cient against steel
 Vickers hardness: 3500 HV
 Friction coeffi cient of steel: 0.2
 Temperature resistance: 400°
 Colour: blue-grey
 Coating process: PVD
Titanium aluminium carbon nitride
 Universal layer for high-performance
machining with high cutting speed TiAlCN
 Low friction
 Very high hardness
 High oxidation resistance
 Relatively low thermal conductivity
 Vickers hardness: 3500 HV
 Friction coeffi cient of steel: 0.20
 Temperature resistance: 800°
 Colour: antique pink
 Coating process: PVD
le� -twisted fl ute
 For through-bores
 chips are transported forwards
 better with intermittent cuts
 reduced chip angle
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12/17/2018 3:30:59 PM