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The future development of cutting tools in China should focus on improving efficiency Release time：2020-08-12　　　　 Time to browse

　　How will China's cutting tool technology and market develop in the future? China's future cutting tool development will focus on improving efficiency first. Because of the improvement of machining efficiency, it will become an important consideration for tool users. Tool users' requirements for improving machining efficiency are, to some extent, based on the requirements of social and international environmental development. From 2000 to 2010, the average wages of employees in Wuxi, Shanghai, Beijing and Guangzhou increased by 500%, 300%, 320% and 290% respectively, showing a general increase in labor costs. The increase of labor costs is in direct proportion to the cost of products, which will lead to the decline of product competitiveness. Another aspect is the appreciation of our RMB. From 2005 to the beginning of 2012, the exchange rate of the RMB against the US dollar rose from about 1:8.1 to 1:6.3, an appreciation of nearly 30%. The euro has appreciated by about 32.5 percent from a peak of 1:11 in 2008 to about 1:8.3 in early 2012. A stronger yuan makes Chinese exports more expensive abroad in local currency, while imports are less expensive in yuan. This has brought additional competitive pressure to domestic enterprises exporting products and industries importing more foreign products. If these negative effects are to be diluted, improving machining efficiency becomes a solution for tool users. Because once the efficiency, the products of the unit time increases the number of share in single product on the equipment cost, manpower cost, management cost will decrease, the total cost of the product so will have a greatly reduced, to improve the efficiency of cutting tool processing, you need to in tool manufacturing technology and application technology of two aspects. This paper only from the tool manufacturing technology to illustrate their own analysis. Tool manufacturing technology in the tool manufacturing technology, the first is the tool material technology. The material technology of cutting tools is expected to develop in both new types of materials and high performance of existing materials. At the 2011 European Machine Tool Show, the SpeedCore of LMT is an example of a new type of material. This hob material should be said to be neither high speed steel nor hard alloy, its chemical composition is shown in Table 1. According to Lange, because the new material has no carbon in it, the "rolling King" no longer USES metal alloy to harden it, but USES aging hardening to improve the wear resistance of the material, which is a brand new material technology. Using this material technology, the hob cutting speed can be improved by more than 50% over traditional HSS and even 30% over powder metallurgy HSS-PM. The main trend of high performance materials is to refine the particles and add some trace elements to improve the properties of materials. Many of us have heard of the magic of nanomaterials. Although it seems that the nanotechnology of tool materials is still in the laboratory stage and has not entered into commercial application, I believe that in the next 30 years, the nanotechnology of tool materials will gradually enter the application stage. Nanomaterials generally refer to materials with particle size of 100nm, i.e. 0.1 m or less. According to the author's data, for solid carbide and indexable inserts, microdrills and micromilling cutters with diameters below 0.1mm currently use subnanometer materials with particle sizes around 0.7 m, while other cutter materials can be made of 1? The 1.3 m particles of cemented carbide can already be called micro particles. In general, the fine particles of the cemented carbide is much higher than the coarse particles of the strength of the cemented carbide, to improve the performance of the tool has a considerable help. Table 2 shows the performance comparison of two solid cemented carbide materials from Ruebig, Germany. It can be seen that the strength of 0.5 m particle cemented carbide is 30% higher than that of 2 m particle. It is expected that in the next 30 years, the use of fine particles, ultra-fine particles of cemented carbide will be more and more high. Similarly, in the range of HIGH speed steel, fine granular powder metallurgy high speed steel will gradually replace ordinary high speed steel with acicular martensite