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Thermodynamic Behavior Research Analysis of Twin-roll Casting Lead Alloy Strip Process 被引量:2
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作者 Chengcan JIANG Yannian RUI 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2017年第2期352-362,共11页
The thermodynamic behavior of twin-roll casting (TRC) lead alloy strip process directly affects the forming of the lead strip, the quality of the lead strip and the production efficiency. However, there is little re... The thermodynamic behavior of twin-roll casting (TRC) lead alloy strip process directly affects the forming of the lead strip, the quality of the lead strip and the production efficiency. However, there is little research on the thermodynamics of lead alloy strip at home and abroad. The TRC lead process is studied in four parameters: the pouring temperature of molten lead, the depth of molten pool, the roll casting speed, and the rolling thickness of continuous casting. Firstly, the thermodynamic model for TRC lead process is built. Secondly, the thermodynamic behavior of the TRC process is simulated with the use of Fluent. Through the thermodynamics research and analysis, the process parameters of cast rolling lead strip can be obtained: the pouring temperature of molten lead: 360-400 ℃, the depth of molten pool: 250-300 mm, the roll casting speed: 2.5-3 m/min, the rolling thickness: 8-9 mm. Based on the above process parameters, the optimal parameters(the pouring temperature of molten lead: 375-390 ℃, the depth of molten pool: 285-300 mm, the roll casting speed: 2.75-3 m/min, the rolling thickness: 8.5-9 mm) can be gained with the use of the orthogonal experiment. Finally, the engineering test of TRC lead alloy strip is carried out and the test proves the thermodynamic model is scientific, necessary and correct. In this paper, a detailed study on the thermodynamic behavior of lead alloy strip is carried out and the process parameters of lead strip forming are obtained through the research, which provide an effective theoretical guide for TRC lead alloy strip process. 展开更多
关键词 TRC lead alloy strip Thermodynamic model Thermodynamic behavior theoretical guide
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Theoretical investigation of laser-generated guided waves in hollow cylinders 被引量:1
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作者 TANG Liguo CHENG Jianchun WANG Jinlan(The State Key Laboratory of Modern Acoustic, Nanjing University Nanjing 210093) 《Chinese Journal of Acoustics》 2002年第3期243-255,共13页
The problem of the laser-generated guided elastic waves in hollow cylinders is inves-tigated numerically by using the method of eigen-function expansion. The explicit expression of the transient waveform is given for ... The problem of the laser-generated guided elastic waves in hollow cylinders is inves-tigated numerically by using the method of eigen-function expansion. The explicit expression of the transient waveform is given for the case of the outer surface of the hollow cylinder beat axi-symmetrically by four laser pulses with same energy. The characteristics of the transient waveform are explained based on the dispersive relations. 展开更多
关键词 In theoretical investigation of laser-generated guided waves in hollow cylinders MODE
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Preliminary Opinion on Theoretic Guiding Ideology of Community Forestry
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作者 ZhaoJunchen 《Forestry and Society Newsletter》 2000年第1期1-4,共4页
关键词 Preliminary Opinion on theoretic Guiding Ideology of Community Forestry
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