φ1550mm支承辊的堆焊修复与强化

Welding Restoration and Strengthening of φ1550mm Backup Roll

分析了济钢中板厂 1550mm支承辊的工况条件及失效情况,选用低裂纹倾向的焊丝,制定埋弧堆焊和特殊热处理工艺对该支承辊进行修复强化。修复后的支承辊比新辊的使用寿命提高了2.54倍。

Analyzes the working condition and failure condition of 1550mm backup roll at the Medium Plate Plant of Jigang, chooses electrode wire with low crack susceptibility, and establishes processes of submergedarc welding and special heat treatment to restore and strengthen the backup roll,then the service life of the restored roll is 254 longer than that of new one