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为了找出珠钢CSP热连轧机组在轧制薄规格集装箱板时出现振动的规律和机理,对该机组中间3架轧机的主传动系统扭振、机座系统垂振、抑振措施进行了现场测试,并对带钢(轧辊)振纹和工艺参数、轧机振动之间的关系,振纹形成必要条件等进行了研究。结果表明:F2轧辊振纹频率为14 Hz,是由齿轮座齿轮啮合冲击激起主传动扭振造成的;F3轧辊振纹频率为54 Hz ,是由接手弧形齿啮合冲击引发辊系水平振动造成的;F4轧辊振纹频率为78 Hz,是由机座水平系统共振造成的;对F4来说为避免振纹形成,在一定轧速下需谨慎选择工作辊直径。对比试验发现,关闭乳化液和采用高速钢轧辊对振动的抑制有较好效果。

In order to find the regularity and mechanism of vibration of CSP mill during rolling thin container strip, torsional vibration of main drive, vertical vibration of stand and suppression measures of three intermediate stands were tested in spot. Then the relationship between strip(roller) chatter marks and technological parameters, and vibration of rolling mill, and necessary conditions for chatter mark generation were researched. It was found that the frequency of F2 roller chatter mark is 14 Hz, and which is caused by torsinal vibration of main drive system excited by transfer case mesh impact. The frequency of F3 roller chatter mark is 54 Hz, which is caused by horizontal vibration of roller system excited by spindle curved tooth mesh impact. The frequency of F4 roller chatter mark is 78 Hz, which is caused by stand horizontal resonance vibration. For F4, to avoid chatter mark growing, it is necessary to select work roll diameter cautiously at preset rolling speed. The contrast test indicated that the vibration can be eliminated by stopping oil water emulsion supply and adopting highspeed steel work roller.

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