The new coating technology promote the cutting tool industry development

Titanium - aluminum - XN new coating technology has won nine patents and invention patents. PVD coated Carbide Drill Bits hardness higher than 40 GPa, superhard effect. The air-oxidation atmosphere at 1100 ℃ for 10 hours after the coating has not been completely oxidized. In 1100 ° C, after tempering, the hardness of the coating is able to maintain more than 40GPa, the bonding strength with the substrate more than 90N independently developed the CVD coating alpha-Al2O3 having a thickness of 10 microns, the coating binding at the same time is more than a force of 80N , cast iron cutting speeds up to 500 meters. The user product comparison, in the mold industry has reached or exceeded the international advanced level of similar products.

After a lot of experiments, the research team chose the best of the Ti-Al-XN coating, oxidation resistance and hardness than in the Ti-Al-N coated Carbide End Mill, cutting performance compared, Ti -Al system-N, and there is no significant improvement. To understand why the performance of the coating achieving the desired effects, R & D team to first new coating peeled off from the substrate ground to a powder differential scanning calorimetry analysis, the evolution of the phase structure of the analysis of the coating at high temperatures, the metastable decomposition process. Ready to optimize the the nanocomposite multilayer structure coating nc-TiAlN/Si3N4 through unremitting efforts, the Task Force.

Coated tool having a high surface hardness, wear resistance, chemical stability, heat resistance, oxidation, low coefficient of friction and a low thermal conductivity characteristics. The reason is as a chemical barrier and a thermal barrier coating material in order to reduce the diffusion and chemical reaction between the tool and the workpiece, thereby reducing wear and tear, so that the tool life is increased from 3 to 10 times or more, cutting speed increased by 20-100%, can be said that a thin layer of coating the core technology of the tool.

The new coating titanium - aluminum - XN road is not easy. Nachi Hardware initial introduction coating production line, the production of Ti-N and Ti-Al-N coating. Digestion and absorption, than ordinary titanium - aluminum - nitrogen coating performance improvement to some extent, but still can not meet the development needs of the tool industry, researchers have developed nanostructures Ti-Al-N coating. In this case, the strain drill to set up a research and development team, the precision tools innovation capability platform construction as an opportunity, to carry out the research work of the new high-performance coatings focus on a particular problem.

Coated tools cutting tools ratio has reached 80%. Foreign enterprises occupy a monopoly position in the field of high-end tools, special CNC machine tools in China, the position of the tool, its core coating technology is becoming increasingly important breakthrough in coating technology, a number of studies were included.

As a big manufacturing country, China is an indisputable fact. But in CNC technology in China and abroad are still gaps, outstanding performance in advanced coating production and painting technology, basic research. Titanium - aluminum - XN the successful application of the new coating technology, breaking the monopoly of foreign enterprises in the field of high-end tools, has laid a solid foundation for the tool to create the conditions to better improve the localization rate to meet the key industries The demand is great economic and social benefits.