阐述了对四辊精轧机机架现场修复的技术方法和操作要点 ,采用此技术对内腔失去精度的轧机尤其是大型轧机进行现场修复 ,可节省巨额修复资金 ,修复质量有保证 ,大大缩短施工时间 ,此技术可供轧钢行业借鉴 The technical methods and operating points of frame repairing on four-high finishing mill are expounded. By using this technology, the in-situ repairing of the rolling mill, especially large rolling mill, with in-cavity precision can be repaired on site, which can save huge amount of repairing funds, guarantee the quality of repairs and greatly shorten the construction Time, this technology can be used for the steel rolling industry