对亚临界电站锅炉再热段管道采样管裂纹成因进行了分析,根据现场实际情况,制定了相应的焊接修复工艺,并实施后获得成功,为大型锅炉再热段管道采样管异种钢焊接修复和更换提供了处理手段。 According to the actual situation in the field, the corresponding welding repair technology was worked out and succeeded after it was implemented. It is the key to repair the dissimilar steel welding of the pipelines in the reheat section of a large boiler. Replacement provides a means of treatment.