我厂生产的轧钢机机架是整个轧机中最大的铸件,在工作时要求抗震耐高温承受重力负荷的性能,故对机架质量要求特别严格。由于气割时工艺操作不妥等原因产生了裂纹,裂纹长而深急需焊补,裂纹表面长1800mm,深度尚不能肯定,待割开后方可知道,面对上述情况,用人工焊 The rolling mill frame produced by our factory is the largest casting in the whole rolling mill. When working, it is required to bear the performance of high temperature resistant against gravity and bear the load of gravity. Therefore, the frame quality is particularly strict. As the gas cutting process and other reasons not properly produce cracks, cracks and the urgent need to repair welding, the crack surface length 1800mm, the depth is not sure, until after the cut to know, in the face of the above situation, the use of artificial welding