摘要
带钢在连续退火线冷却过程中会产生振动。基于相似分析,以原型比例模化试验研究了多排狭缝气体冲击射流诱发的带钢振动现象。采用激光测距仪测量振动,频谱分析表明振动能量主要分布在0~8Hz的低频范围内,还讨论了稳定辊间距、气体射流速度、带钢厚度、带钢张力等对带钢振幅的均方根值的影响。实验数据整理成无量纲振幅W与修正柯西数CY的准则关系式,测量值与回归结果偏差在15%的范围内。
Strip vibration is a common phenomenon in the cooling process of continuous annealing line.A detailed full-scale experiment based on similarity analysis is conduct on strip vibration characteristics induced by the impact of multiply slot impinging gas jets.The vibration is recorded by dedicated laser displacement sensors.The estimation of main strip vibration frequencies indicates most of the spectral energy is distributed in the low frequency range between 0 and 8 Hz.The effects of roll pitches,exit jet velocities,strip thicknesses and strip tension on root mean square（RMS） values of vibration amplitude are reported.All experimental data have been correlated within 15% as functions of normalized vibration amplitude W and modified Cauchy number.
出处
《矿冶》
CAS
2010年第1期40-43,49,共5页
Mining And Metallurgy
基金
上海市青年科技启明星计划(08QB14002)
关键词
带钢振动
狭缝气体射流
相似分析
strip vibration
slot impinging gas jets
similarity analysis
