Rolling theory with transverse uneven lubrication
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摘要: 針對軋輥軸向不均勻磨損及由此帶來的板形控制問題,建立了三維彈塑性動態輥系模型,分析了輥件間接觸狀態及其與軋輥軸向磨損分布間的關系,并由此提出了橫向不均勻潤滑軋制理論.仿真結果表明,通過改變輥件間橫向摩擦因數分布,在保證帶鋼質量的前提下,實現了輥件間接觸壓力及摩擦力分布的均勻化,從理論上驗證了橫向不均勻潤滑在改善輥件間接觸狀態方面起到的積極作用.最后,對橫向不均勻潤滑軋制理論的可行性進行了分析.Abstract: Due to the axial uneven wear of rolls and the problem of shape control brought by uneven wear, a three-dimensional elastoplastic dynamic finite element model of the roll system with a strip was built. The contact state between the roils and the strip was analyzed. The relation between the contact state and the distribution of wear along the axis of the rolls was theoretically analyzed, on the basis of which the rolling theory with transverse uneven lubrication was provided. Simulation results show that under the premise of guaranteeing strip quality, the distributions of rolling force and friction force between the rolls and the strip are homogenized obviously by changing the transverse friction coefficient between the rolls and the strip. It is proved that transverse uneven lubrication has positive effect on the contact state between the rolls and the strip. Finally, the feasibility of the rolling theory with transverse uneven lubrication was discussed.
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Key words:
- lubrication /
- wear /
- rolling force /
- friction force
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