How to choose suitable coating for cutting tools

News 06 Oct 2022

There are many factors that influence the lifetime of cutting tools such as the composition of raw material, machining data, design of products etc. However, we usually ignore the fact that coating also hold an important position on the lifetime of tools.

Coating Name	Color	Hardness	Max service temperature	Friction coefficient	Application Area
AlTiN	Black	3500HV	900°C	0.40	Suitable for tools hardness greater than HRC45
TiAlCrN	Purplish red	3500HV	900°C	0.40	Suitable for tools hardness less than HRC45
TiAlSiN	Black	3800HV	1000°C	0.40	Suitable for high speed and high hardness dry or wet cutting
TiAlN	Purple	3000HV	800°C	0.40	Suitable for tools hardness less than HRC45
Nano Black	Black	4000HV	1200°C	0.45
Nano Blue	Blue	4000HV	1200°C	0.45	Suitable for tools hardness greater than HRC55
TiN	Gold	2500HV	600°C	0.50	generalcoating for tool and dia materials
TiSiN	Bronze	3800HV	1100°C	0.25
Nano TiSiN	Bronze	4000HV	1200°C	0.25
DLC	Black	2500HV	300°C	0.10

The following is the result by our customer:
Coating:TiSiN
Workpiece:SKD11
Vc:100m/min
Fn:0.2mm/r
ap: 10mm
ae:0.3mm

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