CNC Tool Coatings Are Developing Rapidly and New Coatings Are Emerging

Tool coating is another key technology that determines the cutting performance of CNC tools, especially tool cutting efficiency and reliability, and meets the requirements of economic development: cutting efficiency is significantly improved, tool performance is significantly improved and service life is multiplied, saving resources and reducing costs. In recent years, tool coating technology has developed rapidly, and new coating equipment and coating materials are emerging. Based on the traditional TiN, TiC, TiCN, and Al2O3 coatings, new coatings such as TiAlN, TiBN, TiAlBN, CrN, CrC, SN2 with better high temperature red hardness have been developed, as well as soft coating MoS2, which improves self-lubrication performance. Diamond coatings, diamond-like coatings DCL and CBN coatings have also been developed rapidly. Nano-coated structures can significantly improve coating performance under the same coating conditions and are highly valued.

At present. The coating process for cutting tools is mainly in the chemical coating (CVD) and physical coating (PVD). Due to the low operating temperature of the physical coating, the impact on the strength of the tool substate is small, to maintain the geometry accuracy of the tool and the cutting performance of the edge is good, so more use. Chengdu Tool Research Institute's thermo cathode ion plating technology and equipment, Xi'an University of Technology and the United Kingdom co-production of closed field non-equilibrium magnetically controlled sputtering ion plating and equipment, as well as Germany's CemeCon company's high-ionized sputter coating technology and equipment, in part reflects the current situation and development trend of coating technology and equipment, in high-speed steel complex molding tools and carbide CNC tools coating applications have achieved good results. In recent years, Shanghai Tool Factory and Guiyang Tool Factory have introduced new coating equipment, Ha Igong and PPT, Hanjiang Tools and BALZERS have also set up a joint coating center, as well as a number of foreign companies in China to open tool coating service centers to promote the rapid improvement of domestic complex molding tools, CNC tools and blade coating quality, to the international advanced level further close.