Chinese Academy of Engineering Zhou Lian

Cutting performance of CBN tools in the machining of titanium alloy
Into a new block area. Swarf closely adhered to the strain on the nugget zone, the local strain blocks sliding along the inclined surface, the tip vibration, friction heat increases, coupled with the titanium alloy of low thermal conductivity, an alloy will be induced to a higher temperature, thus cutting titanium alloy tool will produce a different degree of wear and heat. CBN tool wear mechanisms: the side of the plastic deformation of the surface of the solution-diffusion, low cycle fatigue. The cutting, CBN nose will be deformed (usually plastic deformation), this cutting process. Cutting speed, feed rate increases, trimming the cutting temperature increases,Lululemon Yoga, stress increases the when tool not sufficient to withstand the combined effect of stress and temperature, the the tool began deformation until failure. Titanium alloy cutting process, the part of the chip to the tool slant, this process is continuous, so that the tool tip to vibrate,lululemon canada, the nose part of the induction low cycle fatigue. The cutting speed is low (low temperature), because the tool tip vibration, the two side agreements mantis green, b, hoop = TH , only critical wear, but in the inclined surface will form a very wide crater. Cutting speed increases. Crater deepened, the tip is badly worn. Typical strip before and after the initial side portion visible wear pattern, the leading edge of the two side severe wear, which is a As = level trimming higher temperature, the tool material due to oxidation. High temperatures (1ioo ¢X C). Flank wear with a wider, the chemical reaction occurs between the workpiece and the tool tip to form a titanium compound. The presence of interfacial diffusion tool wear increased. Cutting temperature is about 900 ¢J, showing a small amount of titanium compounds. 800 "around C, CBN tool with atmospheric 0, N meeting dynamic reaction, these reactions so that the tool life is shortened. This indicates that the CBN tool can be generated in the diffusion wear; presence of no diffusion, 700 "C is the critical temperature of the cutting titanium. The surface finish cutting speed of 185m. / Min,lululemon outlet, the surface finish is good. The surface finish depends on the tip in the process of the reciprocating motion of the workpiece surface. Cutting speed exceeds the limit. Workpiece surface finish is deteriorated, which is due to the presence of the thermal control of the tool wear, and instability caused by swarf,lululemon. The cutting speed of the cutting titanium should 185m/min-220m/min. (Zeng Li pods) 2000 the the Xi'an International zirconium Conference academic exchange of nuclear material will be held in Xi'an, hosted by the Chinese Nuclear Society Nuclear Materials Branch, Northwest Nonferrous Metal Research Institute and the Northwest zirconium tube limited liability company to undertake 2ooo Xi'an International zirconium will () ¢º sZ'2000) and the China Nuclear Society Nuclear Materials Branch Symposium held in Xi'an, Shaanxi Province, on January 5, 2000 l1 q. The conference was chaired by the executive vice president of the Northwest Nonferrous Metal Research Institute, Chinese Academy of Engineering Zhou Lian, and Shanghai University of Chinese Academy of Engineering Zhou Bangxin. Well-known experts and scholars in the United States,Lululemon athletica, Russia, Canada, Japan, Sweden, India, Ukraine, Pakistan and other countries, and domestic nuclear materials, researchers IO0 I attended the meeting, a total exchange of papers more than 70 articles. On the day of the opening of the General Assembly held a plenary meeting, the famous Chinese and foreign experts on the zirconium industry made a keynote speech at China's development, PWR fuel fabrication, zirconium tube advanced manufacturing technology and other topics, caused widespread concern of the delegates. Plenary meetings were held,Lululemon sale, the international the zirconium will and Chinese nuclear material Academic Council. , Chinese and foreign experts took nearly 20 papers in international zirconium Academic Exchange Branch field. Comprehensive exchange of zirconium alloys the process of historical development, scientific research and development dynamic, advanced manufacturing technology and trends; meeting of nuclear material from the nation's major research and production units on behalf of the participants over 50 papers the depth of the words to discuss. Zirconium alloys and other nuclear materials as key materials for the development of nuclear energy, is closely related with the rapid development of high-tech, is one of the most important materials in the atomic age, the representatives of the Chinese nuclear materials in the civil nuclear industry, zirconium alloys and other nuclear material research and production of nuclear material situation of the construction of the industrial system and zirconium alloys have advanced level, and give a higher rating and affirmation. By the exchange on behalf of domestic and foreign experts understand the latest progress of the research and development of zirconium alloys, zirconium alloys provide a reference for our development of a new generation of high-burnup components. The delegates agreed that the meeting to strengthen the academic exchange between scholars of Chinese and foreign counterparts, and enhanced mutual understanding, especially through the Northwest Institute for Nonferrous Metal Research, Baoji Nonferrous Metals Processing Factory and northwest berkelium tube limited liability company visits, improve understanding of foreign experts and related nuclear materials, nuclear materials development capabilities of Shaanxi Province, which has laid a good foundation for the future to strengthen broad international cooperation, promoting the pace of development and application of nuclear material. The (Li Zhongkui Liu Chapter feed)
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