发布时间：2021-06-15 16:09:39 来源：http://www.jnskdj.com 作者：骏豪 浏览量：
Machining requires high tool life and low pollution. With the development of science and technology, the requirement of material surface properties is higher and higher. In recent decades, the research and application of surface engineering technology have made rapid progress with the rise of various vapor deposition technologies. CNC tool blade recycling company with strong economic strength, good business reputation, quickly won the trust of many customers.
These technologies not only meet the requirements of mechanical properties, such as wear resistance, friction reduction and corrosion resistance, but also play an important role in the field of surface related functional materials, such as electromagnetism, optics, optoelectronics, thermology, superconductivity and biology. Surface engineering not only makes low-cost metal materials play a greater advantage in performance and benefit, but also has become an important means to develop a variety of new coating and film materials, which has great application potential. With the development of machining industry, new requirements for cutting tools are put forward. In addition to improving the service life, it is also required to reduce the pollution during cutting and use dry cutting as far as possible.
When the cutting fluid can not be completely eliminated, try to make it contain only antirust agent and no organic matter, which can greatly reduce the cost of recycling. The diversity of cutting tools and the characteristics of working state in use determine the different choice of tool coating in Jiangsu.
Different from drilling, milling cutter should consider its intermittent impact. Wear resistance is the main focus of early developed coatings, and hardness improvement is the main index. This kind of coating, represented by titanium nitride, has a high friction coefficient (0.4 ~ 0.6), and a lot of heat energy will be generated by constant friction between the coating and the workpiece during processing“ In order to avoid tool overheating deformation, affect machining accuracy and extend its service life, cutting fluid is usually used.
In order to solve the problem of reducing or eliminating the cutting fluid, the tool coating should not only make the tool have a long life, but also have the function of self lubrication. The appearance of diamond-like carbon (DLC) coating has shown its advantages in machining some materials (al, Ti and their composites). However, after many years of research, it has been shown that DLC coating has three disadvantages, such as high internal stress, poor thermal stability and the catalyst effect between DLC and ferrous metal, which makes SP3 structure transform to SP2 structure. So it can only be used to process non-ferrous metals, Therefore, its further application in machining is limited.
However, recent studies have shown that the hardness of diamond-like carbon coating (also known as graphite like coating) with SP2 structure can also reach 20-40gpa, but there is no problem of catalyst effect with ferrous metal. Its friction coefficient is very low, and it has good moisture resistance. It can be used as coolant or dry cutting when cutting, and its service life is twice as long as that of uncoated tool, There is no problem in processing steel materials, which has aroused great interest of coating companies and tool manufacturers. CNC tool blade recycling company believes that in time, this new type of diamond-like carbon coating will be widely used in the cutting field.