| 连铸结晶器非正弦振动振幅的确定 |
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| 引用本文： | 孟祥宁,朱苗勇,刘旭东.连铸结晶器非正弦振动振幅的确定[J].特殊钢,2007,28(2):13-15. |
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| 作者姓名： | 孟祥宁 朱苗勇 刘旭东 |
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| 作者单位： | 东北大学材料与冶金学院，沈阳110004 |
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| 摘 要： | 利用结晶器液体摩擦力模型,结合具有最佳振动模式特点的非正弦振动形式,分析了2．0 m／min拉速时非正弦振动振幅对液体摩擦力的影响,给出了振幅选取原则和确定方法。通过对连铸1 270 mm×210 mm SPHC钢(≤0．08％C)的计算结果表明:振动采用小振幅能限制最大液体摩擦力,增大保护渣耗量,减少负滑脱时间;选定2．0m／min拉速,适宜振幅为±4 mm;随拉速提高振幅适当增大,可适时改善振动效果。
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| 关 键 词： | 连铸结晶器 非正弦振动 振幅 液体摩擦力 保护渣膜 |
| 收稿时间： | 2006-09-01 |
| 修稿时间： | 2006-09-01 |
Determination of Non-Sinusoidal Oscillation Amplitude for Casting Mold |
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| Meng Xiangning,Zhu Miaoyong,Liu Xudong.Determination of Non-Sinusoidal Oscillation Amplitude for Casting Mold[J].Special Steel,2007,28(2):13-15. |
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| Authors: | Meng Xiangning Zhu Miaoyong Liu Xudong |
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| Affiliation: | School of Materials and Metallurgy, Northeastern University, Shenyang 110004 |
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| Abstract: | The effect of non-sinusoidal oscillation amplitude on liquid friction force in mold with casting speed 2. 0 m/min has been analyzed by a mathematical model of liquid friction combined a non-sinusoidal oscillation waveform with optimum mode virtue to get amplitude selection principle and determination method. The calculated results for 1 270 mm x 210 mm cast bloom of SPHC steel (≤0. 08C) showed that the maximum liquid friction force could be restricted by applied small amplitude, increased flux consumption, decreased negative strip time, and defined optimum amplitude ± 4 mm at cast speed 2. 0 m/min； and amplitude should be increased suitably with increasing cast speed in order to improve oscillation effect at real time. |
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| Keywords: | Concasting Mold Non-Sinusoidal Oscillation Amplitude Liquid Friction Force Flux Film |
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