连铸机大包转台力臂关节轴承在线更换可行性探究

连铸机作为炼钢厂的关键设备,其设备精度和平稳性直接影响铸坯的质量和产量。连铸机大包转台作为液态金属钢包的承载体,其工作特性是受力大、温度高、受冲击载荷且自身体积大。考虑到其自身的更换和维护难度较大,厂家设计时就采用的免维护轴承,可见其重要性。目前设计方给出免维护轴承使用寿命10年左右,近期新余市新钢集团公司第二炼钢厂1#连铸机大包转台B臂关节轴承异响加剧。自润滑轴承可能已经碎裂,设计方给出的全部离线更换轴承方案需要15天。这样的一个时间跨度过大,一般钢厂很难安排如此长的检修时间。如何在线更快更换大包转台关节轴承作为本文的讨论方向,分析其可行性。

as the key equipment of steel mill,the precision and stability of continuous casting machine directly affect the quality and output of billet.As the carrier of liquid metal ladle,the turntable of continuous casting machine is characterized by large force,high temperature,impact load and large volume.Considering its own replacement and maintenance is difficult,manufacturers design on the use of maintenance-free bearings,visible its importance.At present,the designer has given the maintenance-free bearing service life of about 10 years.Recently,the abnormal ring of B arm joint bearing on the turntable of 1#continuous casting machine in the second steelmaking plant of xinyu xinsteel group co.,LTD has been intensified.The self-lubricated bearings may have been broken,and it will take 15 days for all off-line bearing replacement programs given by the designer.Such a time span is too large,the general steel mill is difficult to arrange such a long overhaul time.How to replace the big package turntable joint bearing online faster as the discussion direction of this paper,analysis of its feasibility.