| 油膜轴承倾斜承载对冷连轧机启动的影响 |
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| 引用本文： | 张晓峰,张清东,吴彬,王康健.油膜轴承倾斜承载对冷连轧机启动的影响[J].北京科技大学学报,2009,31(11). |
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| 作者姓名： | 张晓峰 张清东 吴彬 王康健 |
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| 作者单位： | 1. 北京科技大学机械工程学院,北京,100083
2. 宝钢股份冷轧厂,上海,200941 |
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| 基金项目： | 国家自然科学基金与钢铁联合基金 |
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| 摘 要： | 针对某CVC带钢冷连轧机启动阶段支持辊油膜轴承静压承载能力不足的问题,应用流体润滑理论,建立了轴承倾斜工作下静压承载能力的全润滑系计算模型,分析了轧机压下倾斜、油泵功率和节流器液阻对轴承静压承载性能的影响. 计算结果表明,压下倾斜过大会造成轴套与衬套的轴线出现倾斜,进而导致轴承的静压承载能力急剧下降,是造成轴承寿命缩短、连轧机启动频繁失败的根本原因. 在实际生产中,限定了轧机压下倾斜设定值上限,增大了润滑油黏度,从而有效提高了轴承的承载能力,机组启动成功率显著提高.
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| 关 键 词： | 冷连轧机 油膜轴承 承载能力 计算模型 |
Influence of misaligned journal bearings on the start-up process of tandem cold rolling mills |
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| ZHANG Xiao-feng,ZHANG Qing-dong,WU Bin,WANG Kang-jian.Influence of misaligned journal bearings on the start-up process of tandem cold rolling mills[J].Journal of University of Science and Technology Beijing,2009,31(11). |
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| Authors: | ZHANG Xiao-feng ZHANG Qing-dong WU Bin WANG Kang-jian |
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| Institution: | ZHANG Xiao-feng1),ZHANG Qing-dong1),WU Bin2),WANG Kang-jian2)1) School of Mechanical Engineering,University of Science , Technology Beijing,Beijing 100083,China2) Cold Rolling Department,Baoshan Iron , Steel Co. Ltd.,Shanghai 200941,China |
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| Abstract: | In order to solve the poor load capacity of oil film bearings during the start-up process of tandem cold rolling mills,based on the hydrostatic bearing theory,a load bearing capacity model for oil film was established. The influences of screw-down tilting,hydraulic pump power and restrictor's hydraulic resistance on the hydrostatic pressure bearing-spindle system were calculated. The results show screw-down tilting is the basic reason of the problem. When there is an obliquity between the shaft sleeve and b... |
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| Keywords: | tandem cold rolling mills oil film bearing load bearing capacity calculation model |
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