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按ＡＳＴＭＥ１１５２—８７、Ｅ８１３—８９和我国ＧＢ２０３８—９１标准，用单试样卸载柔度法完成了９％Ｎｉ钢３种焊接接头的低温断裂韧度Ｊ（ＩＣ）和ＪＲ阻力曲线的测试。通过分析验证，采用国产Ａ５５７焊材修复球罐是可行的。
According to ASTME1152-87, E813-89 and GB2038-91, the single-specimen unloading compliance method was used to test the low-temperature fracture toughness J (IC) and JR resistance curve of 9 kinds of Ni steel welded joints. Through the analysis and verification, domestically produced A557 welding consumables is feasible.