Shape-control characteristics of six-high mill with roll offset
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摘要: 為提高冷軋帶鋼六輥軋機輥系的穩定性,目前常采用軋輥偏移方法.本文通過ABAQUS有限元軟件建立輥系-軋件一體化耦合模型,對不同軋輥偏移輥系進行受力分析,揭示了不同軋輥偏移條件對六輥軋機板形調控特性的影響規律.結果表明,中間輥正向偏移軋制時,工作輥彎輥力對二次凸度調控功效最好,對四次凸度影響較大;在四種偏移方式條件下,中間輥彎輥力在0~300 kN范圍內對帶鋼二、四次凸度調控功效基本相同;中間輥正向偏移軋制時,中間輥彎輥力在300~500 kN范圍內對帶鋼二次凸度調控功效最好;工作輥正向偏移軋制時,中間輥彎輥力對四次凸度影響較大;不同軋輥偏移條件下中間輥竄輥對帶鋼二次凸度調控趨勢基本相同,且負竄輥對二次凸度的調控功效優于正竄輥,工作輥正、反向偏移軋制條件下中間輥竄輥對四次凸度影響較大.Abstract: To improve the stability of the six-high cold rolling mill, the roll offset method is often used. This paper uses ABAQUS finite element software to establish the rolls-strip coupling model. The study analyzes typical roll systems with different roll offsets to determine the effect of different roll offsets on the shape-control characteristics of the six-high cold rolling mill. Specifically, the results show that when the intermediate roll offset is positive, the bending force of the work rolls has the best control effect on the quadratic crown, as well as great influence on the quartic crown. For the four roll offsets used, the efficiency of the bending force of the intermediate rolls on the quadratic and quartic crowns of the strip is almost the same, ranging from 0-300 kN. When the intermediate roll offset is positive, the bending force of the intermediate rolls has the best control effect on the quadratic crown, ranging from 300-500 kN. When the work roll offset is positive, the bending force of the intermediate rolls also has a great influence on the quartic crown. The controlling tendencies of the shift of the intermediate roll on the quadratic crown are almost the same for different roll offsets, and the efficiency of negative roll shifting on the quadratic crown is better than that of positive roll shifting. Intermediate roll shifting also has a great influence on the quartic crown when the work rolls are offset.
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Key words:
- UCM cold rolling mill /
- stability /
- rolls-strip coupling models /
- roll offset /
- shape control
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參考文獻
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