Milling cutters and their coatings
When selecting the right milling cutter, the question often arises as to the application and the material to be machined.
Table of contents
- Why are milling cutters coated?
- What coatings are available for paulimot milling cutters?
- HSS (high-speed steel) or solid carbide - when do I use what ?
- Which milling cutters are suitable for which materials ?
- The paulimot milling cutters in use
Why are milling cutters coated?
Coatings are used to increase heat resistance and wear resistance and therefore help to increase the service life of the tool/milling cutter.
Here are some reasons why milling cutters are coated:
Wear protection:
Wear protection is particularly important for hard materials.
The coating creates a protective layer that protects the milling cutter from wear caused by friction and heat.
Improved cutting performance:
the cutting performance of the milling cutter can be improved by a coating by reducing friction.
Prevention of built-up edges:
the occurrence of built-up edges can be reduced or even completely prevented by the type of cutting edge geometry and cutting edge surface. Built-up edges are deposits of material that can form on the cutting edges.
What coatings are available for paulimot milling cutters?
- TiN coating
TiN = titanium nitride
Higher heat resistance and tool life. For hard and soft materials.
- AlTiN coating
AlTiN = aluminium-titanium-nitrogen
all-round coating intended for universal use.
Hard materials such as steel or stainless steel can be machined, as can materials such as brass, bronze or plastics. Another advantage over uncoated tools or tools with a TiN coating is that the use of cooling lubricant is not absolutely necessary. However, the use of coolant generally increases the service life of the milling cutters. - AlTiNSiN coating
AlTiNSiN = aluminium-titanium-silicon-nitrogen
For hard to very hard materials and therefore for high machining temperatures. The coating allows hardened, alloyed steels and cast iron to be machined. Another feature of this coating is that it is suitable for dry and wet machining and therefore the use of cooling lubricant is not absolutely necessary. However, the use of coolant generally increases the service life of the milling cutters.
- Polished (uncoated)
The very sharply ground and polished cutting edges make these milling cutters particularly suitable for machining aluminium. The special cutting edge geometry counteracts the formation of built-up edges and at the same time ensures an even and clean surface.
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