Nanostructure coating (Nanocoating) technology is a new coating technology developed rapidly. The grain size of the coating material is generally below 100nm, which has good cutting performance. At this exhibition, many domestic and foreign companies have launched new grades of nanostructured coatings.
The super ZX coating grades (ACP200, ACP300, ACK300 and AC530U) launched by Sumitomo Electric Hardmetal Co., Ltd. of Japan use ultra-thin TiAlN and AlCrN nano-scale coatings with a total number of 1000 overlapping layers. The thickness of the coating is about 10 nanometers, which greatly improves the hardness and oxidation resistance of the coating surface. Compared with the traditional TiAlN coating, the hardness of the super ZX coating is increased by 40%, and the starting oxidation temperature is also increased by 200 °C, thereby improving the machining efficiency of the tool by 1.5 times; under the same cutting conditions, the tool life is increased by 2 times. Japan's Hitachi Co., Ltd. also introduced new grades of nano-structured coatings.
The company's new nano-coating ATH and ACS series grades have higher hardness and oxidation resistance than the usual TiAlN (PVD) coating grades. , its oxidation resistance temperature reaches 1100 ℃, and its microhardness reaches 3600HV. It can be applied to high-speed dry cutting from pre-hardened steel to hardened steel. The new grades of nanostructured nc-TiAlN coating (YBG102, YBG202, YBG302 and YBG203) newly launched by Zhuzhou Diamond Cutting Tool Co., Ltd. are coated with 2-4 μm nano-TiAlN on the surface of ultra-fine grained cemented carbide substrates. The grades cover the turning and milling of most materials such as steel, stainless steel, cast iron, heat-resistant alloys, superalloys, titanium alloys, and have a wide range of adaptability.
