subject: The Application Of New Ceramic Tool Material And Prospects [print this page] Affect the performance of the tool cutting efficiency, accuracy, surface quality of the decisive factors. In modern processing, improve processing efficiency of the most effective way to use high-speed machining technology; with modern science and technology and production development, more and more difficult to machine materials with super-hard to improve equipment life and performance. The ceramic tool is its excellent heat resistance, wear resistance and chemical stability, high-speed cutting areas and difficult to process materials show the advantages of the traditional tools can not match. New ceramic cutting tools is more due to a high hardness (HRA93 ~ 95), which can process up to HRC65 hardness of various refractory materials, remove the annealing processing power and time consumed in question; can increase the hardness of the workpiece to extend the use of machinery and equipment Life. Ceramic Tools AlO and Si is the main raw material in the most abundant crustal elements, can be said to be inexhaustible, and therefore the application of new ceramic cutting tools a bright future.
According to Hall-petch relationship, the smaller the grain size and strength of ceramic materials, the higher the hardness. When the grain size is about as small as 100nm, the strength and hardness will be a great breakthrough. However, the activity of nanoparticles greatly lower the interfacial reaction activation energy, grew up in the sintering process is extremely easy, although the inhibitor is added, the effect is still not ideal, it has not yet developed nano-ceramic tool material success stories. Nano-modification, nanocomposite successfully resolved the issue abnormal growth of grains, nano-particles pinning the dislocation free zone or into the substrate to form sub-grain boundaries, resulting in the matrix grain refinement. Modify, and ultra-fine grain nano-composite ceramic tool materials, tool materials for future research and development will be the main direction of development.
Ceramic tool material is one of the most promising high-speed cutting tool material, in the production of a wide range of applications. Currently, it has attracted world attention. In Germany about 70% of the processing of the casting process is done with ceramic tool, while Japan accounted for ceramic tool Tool total annual consumption of 8% to 10%. The development of ceramic cutting tools in China is very rapid, substantial research and development level and international. Ceramic cutting tools have very high abrasion resistance, better than carbide chemical stability, high-speed cutting conditions and continued longer, asked, carbide cutting tools than the average 3 to 10 times greater efficiency . It implements an auto instead of grinding, to cast on behalf of high-performance milling of "hard Processing Technology" and "dry cutting technology", to improve part surface quality. Achieve dry cutting, the control of environmental pollution and reduce manufacturing costs with broad applications.
New ceramic tool material can not compare with the other advantages of tool materials, the development of very large spatial. Components on ceramic tool material, manufacturing process and material design of the study, can maintain high hardness, high wear resistance and red hardness, based on a great tool to improve the toughness and impact resistance, prepared to meet modern cutting use of appropriate materials, technology requirements. Can be expected, with a variety of new ceramic tool materials used. Will promote the efficient and high-speed cutting machine tool technology, and efficient high-speed cutting machine tools and the promotion and application of technology, but also further promote the use of new ceramic tool material.
The Application Of New Ceramic Tool Material And Prospects
