Tool coating technology development and application in aircraft manufacturing (3)

Domestic and foreign coating technology and coating equipment status

Since Balzers put its PVD coating tools on the market in the early 1980s, the application and development of this technology in Europe has played a very important role worldwide. With the advent of the era of high-speed machining in modern equipment manufacturing, countries around the world have paid more attention to the application and development of tool coating technology. European tool coatings have been unexpectedly widely developed in recent decades, especially the increasing perfection of PVD coating technology and equipment, which can be said to represent the highest level in the world.

At present, there are more than 10 manufacturers of PVD coating equipment in Europe, and there are more than 60 corresponding coating processing service centers. A complete service system has been formed in countries and regions with more developed machinery processing industries. At present, Europe's coating equipment manufacturing and service companies that are more influential in the field of tool coating include Balzers in Switzerland, Platit, and Cemcom and PVT in Germany. These companies mainly use cathodic arc and magnetron sputtering. technology.

Europe's PVD coating technology has a great impact on China's tool market. At present, these high-level coating companies have introduced the most advanced technology and best service model to China, and some companies have also established coatings in coastal cities in China. Layer processing center specializing in PVD coating services.

The development of domestic tool coating technology has started almost simultaneously with European countries. At present, the advanced level of European tool coating has reached the fifth generation level, while the domestic market is still basically at the second generation level. The reason is that the coatings adopted by European coating companies are: establishing a multi-party joint development system, strengthening cooperation, and adhering to their own characteristics, following the market demand, continuously developing new technologies and new products, and gradually meeting market needs; domestic knives The research and development of coating technology is mainly based on colleges and universities. The basic theoretical research and analysis and the development of new coatings are equivalent to the advanced level in foreign countries. Some concepts are even ahead of European countries, but how to guide industrial production and further There is still a lack of research on the new theory, and there is no corresponding policy guidance yet. This should attract attention and reflection.

Shaanxi Dijincheng Surface Engineering Co., Ltd. is a specialized high-tech enterprise engaged in tool coating technology research and development and industrial application. The technology relies on Beijing University of Aeronautics and Astronautics, Xi'an Jiaotong University, Northwestern Polytechnical University and other research and development institutes with strong research and development. The Beijing Power Source Technology Development Company, which is famous in the United Nations coating equipment manufacturing industry, has independently developed fully automatic controlled magnetron sputtering. - Multi-arc ion deposition equipment, its performance indicators are close to the international level, and at the same time develop a series of nano-scale coating technology for different working conditions.

These technologies have been widely used in Xi'an Aero Engine Company, Xi'an Aircraft International Aviation Manufacturing Co., Ltd., Shaanxi Blower Power Co., Ltd., Yituo (Luoyang) Huide Tooling Co., Ltd., Baotou No. 1 Machinery Manufacturing Plant, etc. Economic and social benefits.

Tool coating and performance of Shaanxi Dijincheng Surface Engineering Co., Ltd.

Magnetron sputtering-multi-arc ion deposition equipment is a new composite technology that combines the advantages of fine, dense and multi-arc ion deposition with high ionization rate and fast deposition rate. Continuous transition, multi-layer multi-structure alternate function, can prepare ceramic coatings suitable for various working conditions; the design of the whole machine is advanced and reasonable, and the industrial control machine and programmable logic controller are used to control the whole coating process. This ensures the stability, repeatability and precise control of the film quality.

The protection design of the power supply has more unique features, such as voltage regulation, rectification, pulse, overload protection, automatic arc extinguishing, etc., and the technology is pollution-free, pollution-free, and environmentally friendly.

Application case of DJC series coated tool

It can be seen from the above results that materials that are difficult to be machined in the aerospace manufacturing industry (such as aluminum alloy, titanium alloy, magnesium alloy, high temperature alloy, stainless steel, etc.) are difficult to process with ordinary tools, and the processing efficiency is very low, and the tool life is very high. Short, and the use of coated tools not only extends the service life, but also increases the processing efficiency and gives the surface quality of the machined parts a grade.

Conclusion

With the rapid development of China's manufacturing equipment industry, China's tool coating technology will soon enter a period of rapid development, and more and more high-performance coating tools will be processed and produced by domestic coating centers, and China's The level of cutting technology, and make greater contributions to the development of China's modern equipment manufacturing.

About the Author:

Unit: Shanxi Jincheng ground surface Engineering, Xi'an Jiaotong University School of Materials Co., Ltd. Xi'an Aircraft International Design Studio tool of: party building Kun Song Zhongxiao Liu Chunsheng

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