Generation mechanism of axial force on the roll systems of a 2250 hot continuous rolling R2 rolling mill
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摘要: 針對某2250熱連軋R2軋機軸向力過大導致傳動系統的主電機軸承座和水平軸軸承座移位事故的問題,研制了軸向力在線監測系統并對軸向力進行長期在線監測.從理論上剖析了軋機軸向力生成的主要原因并進行了計算機仿真研究和探討,得出軸向力的大小與輥系交叉角密切相關.通過減小輥系軸承座與牌坊之間的間隙來控制交叉角的大小,從而可以有效地減小軋機軸向力,這一結果得到現場實驗驗證.Abstract: In order to solve the problem that excessive axial force causes a displacement accident of the main motor bearing box and horizontal axis bearing box in the drive system of a 2250 hot continuous rolling R2 rolling mill, an on-line monitoring system of axial force was developed to monitor the axial force for a long time on-line. The main reason for axial force generation was theoretically analyzed and a computer simulation was carried out. It is shown that the axial force is closely related to the roll cross angle, and can be effectively controlled by reducing the gap between roll bearing box and the arch. This result was verified by field experiment.
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Key words:
- hot rolling mills /
- rolls /
- axial force /
- finite element method /
- simulation
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