王宏明,任忠鸣,李桂荣.电磁连铸高频调幅磁场对铸坯表面温度的影响[J].稀有金属材料与工程,2010,39(2):347~351.[Wang Hongming,Ren Zhongming,Li Guirong.Effect of High Frequency Amplitude-Modulated Magnetic Field on Billet Surface Temperature during Electromagnetic Continuous Casting[J].Rare Metal Materials and Engineering,2010,39(2):347~351.]
电磁连铸高频调幅磁场对铸坯表面温度的影响
投稿时间:2009-01-05  
中文关键词:  电磁连铸  高频磁场  调幅  感应热  表面温度
基金项目:江苏省高校自然科学研究计划(05KJD450043); 江苏省高技术研究(BG2005026); 江苏省自然科学基金 (BK2006078)资助
中文摘要:
      建立电磁软接触连铸结晶器内三维电磁场和温度场计算模型,研究采用方波和正弦波调幅后的高频调幅磁场对铸坯表面温度的影响。结果表明:方波和正弦波调幅磁场的感应热功率都与调幅波频率无关。方波调幅磁场的感应热功率(Q)介于单独施加用于调幅的两个恒幅磁场的感应热功率(Q1和Q2)之间,在Q1和Q2确定后,调幅磁场的感应热功率取决于各自作用时间T1和T2的相对比例;正弦波调幅磁场产生的感应热功率是高频磁场调幅前感应热功率的62%~64%
Effect of High Frequency Amplitude-Modulated Magnetic Field on Billet Surface Temperature during Electromagnetic Continuous Casting
英文关键词:electromagnetic continuous casting  high frequency electromagnetic field  amplitude modulation  induction heat  surface temperature
英文摘要:
      A three dimensional finite element mathematical model of electromagnetic field and temperature field was developed to investigate the effect of high frequency amplitude-modulated magnetic field on the billet surface temperature. The results show that the induction heat power of magnetic field amplitude-modulated with sine wave and square wave is unrelated to the frequency of modulating wave. The induction heat power of magnetic field modulated with square wave is between the induction heat powers of the two constant amplitude magnetic fields employed to modulate. If the induction heat powers of the two constant amplitude magnetic fields are determined, the induction heat power of magnetic fields modulated with square wave is determined by the relative scale of the acting time of the two constant amplitude magnetic fields. The induction heat power of magnetic field modulated with sine wave is about 62-64% of that of the high frequency magnetic field before modulation
作者单位
王宏明 江苏大学江苏 镇江 014010 
任忠鸣 上海大学上海 200072 
李桂荣 江苏大学江苏 镇江 014010 
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