Common carbide end mill cutter coating
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Update time : 2017-03-24 12:03:27
The correct surface treatment of the small circular tool（endmills） can improve the tool life, reduce the processing cycle time, improve the processing surface quality. However, depending on the processing needs of the correct choice of tool coating may be a confusing and strenuous work.
Each coating has both advantages and disadvantages in the cutting process. If an improper coating is used, it may cause the tool life to be lower than that of the uncoated tool, and sometimes even lead to more problems than the uncoated endmills cutter.
A wide range of tool coatings are available, including PVD coatings, CVD coatings, and composite coatings that are alternately coated with PVD and CVD.
1, titanium nitride coating (TiN): TiN is a universal PVD coating, can improve the hardness of the tool, a higher oxidation temperature. The coating for high-speed steel cutting tool has a good processing effect.
2, titanium nitride coating (TiCN): TiCN coating in the carbon part to improve the hardness of the tool, a good lubricity, is the ideal high-speed steel cutting tool.
3, nitrogen and aluminum titanium and titanium titanium aluminum coating (TiAlN / AlTiN): nitrogen and aluminum titanium and aluminum titanium aluminum coating in the formation of a layer of alumina can improve the life of the tool in the high temperature processing. Can be used for dry or semi-dry cutting of the coating. The ratio of aluminum to titanium in the coating is different. The titanium-titanium-aluminum coating has a higher hardness than the N-Al coating, which is a good coating option for high-speed machining.
4, chromium nitride coating (CrN): chromium nitride coating good anti-adhesion to make it easy to produce BUE in the processing of the preferred coating. After coating this almost invisible coating, high-speed steel, carbide and other cutting tool processing performance will be improved.
5, Diamond (Diamond): Diamond coating for non-ferrous metal processing tool the best coating, processing graphite, metal matrix composite (MMC), high silicon aluminum and high abrasive material ideal coating (pure diamond The coating tool can not process the steel, the processing steel will produce a lot of cutting heat, and lead to a chemical reaction, so that between the coating and the adhesive layer was damaged). Coatings for hard milling, tapping and drilling are different and they are used in specific situations. In addition, there are multi-layer coating, this coating in the surface and the tool base is also embedded between the other coating, improve the life of the tool.
6, the oxidation coating (Homo): oxidation coating (Homo) is the tool in the 500 ~ 550ºC water vapor heating 30 to 60 minutes, the tool surface to generate Fe3O4 layer, which is a kind of oxidation treatment, the oxide film The thickness is in the range of 1 to 3 μ. This film is porous because of the original, can keep the cutting oil to reduce friction heat, difficult to cut the material, high tensile steel, stainless steel, cast iron, wire attack prone to wear and tear of the very effect.
Each coating has both advantages and disadvantages in the cutting process. If an improper coating is used, it may cause the tool life to be lower than that of the uncoated tool, and sometimes even lead to more problems than the uncoated endmills cutter.
A wide range of tool coatings are available, including PVD coatings, CVD coatings, and composite coatings that are alternately coated with PVD and CVD.
1, titanium nitride coating (TiN): TiN is a universal PVD coating, can improve the hardness of the tool, a higher oxidation temperature. The coating for high-speed steel cutting tool has a good processing effect.
2, titanium nitride coating (TiCN): TiCN coating in the carbon part to improve the hardness of the tool, a good lubricity, is the ideal high-speed steel cutting tool.
3, nitrogen and aluminum titanium and titanium titanium aluminum coating (TiAlN / AlTiN): nitrogen and aluminum titanium and aluminum titanium aluminum coating in the formation of a layer of alumina can improve the life of the tool in the high temperature processing. Can be used for dry or semi-dry cutting of the coating. The ratio of aluminum to titanium in the coating is different. The titanium-titanium-aluminum coating has a higher hardness than the N-Al coating, which is a good coating option for high-speed machining.
4, chromium nitride coating (CrN): chromium nitride coating good anti-adhesion to make it easy to produce BUE in the processing of the preferred coating. After coating this almost invisible coating, high-speed steel, carbide and other cutting tool processing performance will be improved.
5, Diamond (Diamond): Diamond coating for non-ferrous metal processing tool the best coating, processing graphite, metal matrix composite (MMC), high silicon aluminum and high abrasive material ideal coating (pure diamond The coating tool can not process the steel, the processing steel will produce a lot of cutting heat, and lead to a chemical reaction, so that between the coating and the adhesive layer was damaged). Coatings for hard milling, tapping and drilling are different and they are used in specific situations. In addition, there are multi-layer coating, this coating in the surface and the tool base is also embedded between the other coating, improve the life of the tool.
6, the oxidation coating (Homo): oxidation coating (Homo) is the tool in the 500 ~ 550ºC water vapor heating 30 to 60 minutes, the tool surface to generate Fe3O4 layer, which is a kind of oxidation treatment, the oxide film The thickness is in the range of 1 to 3 μ. This film is porous because of the original, can keep the cutting oil to reduce friction heat, difficult to cut the material, high tensile steel, stainless steel, cast iron, wire attack prone to wear and tear of the very effect.