According to statistics from the Japan Tool Association, China has become the world's largest consumer of machine tools, followed by Japan, the United States, and Italy. From the point of view of tool production value, the output of cemented carbide tools has continued to increase in recent years, while high-speed steel tools have begun to show a downward trend. The import and export volume of cemented carbides has increased significantly. The main export target is Asia, followed by Europe, then North America and other regions. High-speed machining has been widely recognized as a processing technology that increases production and reduces manufacturing costs. The concept of dry or micro-lubrication is the main goal of the processing industry today to reduce environmental and production costs. For tool manufacturers and coating suppliers, the most important is productivity. Cutting performance (cutting speed, cutting time per unit time) is increased by 20%, and manufacturing costs are reduced by 15%. According to relevant sources, increasingly stringent processing requirements require further development of tool materials and coatings, improved processing conditions and improved tool design. The current challenges and areas for improvement include: mechanical and structural properties: hardness, strength, wear resistance; thermal and chemical properties: heat resistance, insulation, catalytic properties; biological properties: adaptability, insecticidal properties Electronic and optical properties: reflectivity, transparency, etc. In recent years, (ti,al) coated carbide tools have dominated the high performance tool market. The high demand in certain special applications has facilitated the development of special coatings or precision coatings.
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