After years of development, China's tool coating technology is currently in a critical period, that is, the original technology can no longer meet the increasing requirements of cutting processing, and the coating equipment of major domestic tool factories has reached a period of renewal. Therefore, fully understand the current status and development trend of tool coating technology at home and abroad, aim at the advanced level of international coating technology, and develop tool coating technology (especially PVD technology) in a planned and step-by-step manner to improve the manufacturing level of cutting tools in China. Significance. The development of CVD technology in China China began to study CVD coating technology in the early 1970s. Due to the strong specificity of this technology, there are not many units engaged in research in China. In the mid-1980s, the development of China's CVD tool coating technology reached a practical level, and the level of process technology was comparable to the international level at that time, but it developed slowly in the following ten years (similar to foreign research); At the end of the year, China began the research and development of MT-CVD technology. The research and development of MT-CVD process and equipment is expected to be basically completed in 2001. According to the research objectives, the process technology and equipment will reach the current international advanced level; the research of PCVD technology in China begins. In the early 1990s, PCVD process technology was mainly used for mold coating, and its application in the field of cutting tools is still very limited. In general, the overall development level of domestic CVD technology is not much different from the international level. After the successful development of MT-CVD technology, China's overall level in the field of tool CVD coating will be basically synchronized with the international advanced level. Led Downlight Emergency Conversion Kit Led Lamp Emergency Power Supply,Led Battery Ballast ,Led Battery Backup Driver,Led Driver With Battery Backup Foshan Nai An Lighting Electric Co.,ltd , https://www.naipsled.com
Development <br> <br> PVD coating technology in China PVD technology, our research and development work began in the early eighties, the successful development of eight mid-sized hollow cathode ion plating, and the development of high-speed steel cutting tools TiN coating Process technology. During this period, due to the promising market prospects for cutting tool coatings, seven large tool factories in China introduced large PVD coating equipment from abroad (both high-speed steel TiN coating technology). The introduction of technology and equipment mobilized the development of domestic PVD technology. Many research institutes and major vacuum equipment factories have started the development of large-scale ion coating machines, and developed a variety of PVD coating equipment in the early 1990s. However, due to the low performance index of most equipment, the quality of the tool coating cannot be guaranteed, and the expected market benefits are not realized. Therefore, most companies have not further studied PVD tool coating technology, resulting in the domestic PVD tool coating for nearly ten years. The development of technology has stalled. Despite the successful development of the hard alloy TiN-TiCN-TiN multi-component coating technology in the late 1990s and reaching a practical level, the development of CNx coating technology has also made a major breakthrough, but compared with the international development level, China's tool PVD Coating technology is still about a decade behind. At present, foreign tool PVD coating technology has been developed to the fourth generation, while the domestic is still in the second generation level, and still dominated by a single layer of TiN coating.