摘要
本文对秦山核电厂320 MWe汽轮机静叶裂纹产生的原因进行了分析,从母材的材质性能、裂纹倾向、焊接拘束及应力状态等方面,对静叶焊接修复的可行性进行了分析,针对马氏体不锈钢的焊接修复特点,分析了不同的焊接修复方案,制定了合理的修复焊接工艺。
This paper analyzes the reason(s) for turbine stator blade crack of 320 MWe in Qinshan nuclear power plant and feasibility of its repair welding in aspects of base metal properties,cracking tendency,welding restraint and stress state,etc.Different repair strategies and proper welding process are discussed based on repair features of martensitic stainless steel.
引文
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