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 Wysłany: Sob 11:47, 06 Lis 2010 Temat postu: cheap ugg boots Mine the feasibility of mechanical |
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Mine the feasibility of mechanical parts of cryogenic treatment
V: product manufacturing process. For example, hydraulic valve components support the processing, except for a few plant uses CNC equipment, the most common processing equipment still in use, it is difficult to ensure that the geometry of the valve parts and with precision. Overseas, the scaffold structure after welding, the main defect inspection and weld must be annealed structure to eliminate stress. The structure of domestic only check the dimensional accuracy, position accuracy and appearance, rarely do the weld defect inspection, the structure of the general not to eliminate the stress treatment. \Technical problems 'Heavy Light', focusing on the design structure,[link widoczny dla zalogowanych], rarely reliability theory, process methods, resulting in the development of manufacturing technology lags behind. \improve the status quo provides a better solution. Table 1 is a common mold material after cryogenic treatment of the life changes. Table 2 Li Nici former Soviet Union Hermes accessories factory farm vehicles and the number of different tempering tempering high-speed without The bulk steel reamer for deep cryogenic treatment, the tool life comparison. Table 1 dies after cryogenic treatment by the change of life Table 2 high-speed steel reamer life comparison of different treatment of the manufacturing process reamer tool life (hinge holes) Standard Process (quenching + tempering + secondary machining) the second tempering + quenching + cryogenic treatment machining + tempering + quenching + a + deep cryogenic treatment machining 6oo90o2Ooo and with the expansion of computer applications, cryogenic treatment process for the computer simulation are also a qualitative leap: Zhejiang University of Technology on the 7050 aluminum alloy sheet cold processing and using ANSYS software for the cryogenic processing computer simulated and calculated Results compile. and experimental results agree well. The author Thesis ((M24 Taps quench and computer simulation of deep cryogenic treatment,[link widoczny dla zalogowanych], \, railways, military, and many other industries, with high precision temperature control, cooling medium and lower cost. Shenzhou some of the key parts of the deep cryogenic treatment is completed with this equipment; the coal industry chain, butt welding of round cryogenic processing technology has been adopted and by testing the useful life of more than 200% increase; the deep cold box size can be flexibly customized according to product size, coal equipment manufacturing industry to adapt to major coal products, such as bearings, cutting head, reducer gears, springs , important pieces of the key cylinder class technological requirements. Figure 1 Schematic of cryogenic process 1. vent hole 2. cover 3. heater 4. valve 5. operating panel 6. hydraulic cylinder 7. disperser 8. fan 9 . wind deflector 10. thermometer 11. insulation layer can be seen: With the development of information technology, control technology, cryogenic treatment at this stage of the process to achieve both a viable means of its realization is controllable and predictable. 5 Conclusion cryogenic treatment has been in the aviation, aerospace, railway,[link widoczny dla zalogowanych], military, tool manufacturing industry in general the trial began, and some have become a routine process. According to industry sources, South Korea's Daewoo has recently adopted the technology, private coal enterprises, \\Industry has long been \Perhaps the future of coal equipment manufacturing industry will have enormous economic benefits. Reference 1-1] CHEN Ding, Huang Peiyun, Li literature. cryogenic treatment of metal materials, the development of profiles [J]. thermal processing technology, 2001 (4): 57-59. [2] PAN Jian-sheng. Treatment Information and Manufacturing Rapid Development [J]. VIP Information,[link widoczny dla zalogowanych], 2004 ( . [3] Fu Jun, Wang Qiucheng, Hu Xiaodong .7050 aluminum alloy sheet when the temperature of cryogenic treatment Numerical simulation [J]. Temperature Physics, 2005,23 (2) :20-23. Author: Han Binhui (1971 a), Taiyuan, Engineer, Master of Engineering, research direction: CAD / CAM, now Taiyuan Institute of Coal Research work has been issued 10 papers,[link widoczny dla zalogowanych], e-mail: [link widoczny dla zalogowanych]. a 8l a Received: 2008.03.14
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