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本文为铸铁件可焊性的分析。运用断裂力学观念点对铸铁件补焊时产生裂纹的原因进行了剖析，给出了具体工艺措施及实例。
This article is cast iron weldability analysis. The reason of cracking occurred in the welding of cast iron was analyzed by using the concept of fracture mechanics. The specific technical measures and examples were given.