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介绍了壳体材料为2.25Cr-1Mo的在役厚壁高温高压容器第一合成回路蒸汽发生器(E53)壳体焊缝穿透性裂纹的性质,以及大面积、大长度(约为周长的2/5)穿透性裂纹化工现场补焊的措施和效果。
This paper introduces the properties of weld penetration cracks in the first synthetic loop steam generator (E53) in the in-service thick-walled high-temperature and high-pressure vessel whose shell material is 2.25Cr-1Mo, as well as large area and large length Of 2/5) penetration crack chemical site welding measures and effects.