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1Cr11Ni2W2MoV和Cr17Ni2不锈钢主要用于制造在600℃以下工作的轴、盘、叶片及其他零件。在使用中,曾先后发现五批材料中含有异金属夹块。由于这五批材料已全部进行加工,涉及到一万多件叶片,故这一材质故障成了工厂重大的质量问题。为此,对异金属夹块做了一些分析鉴别工作。 一、故障件历史及分析方法 故障叶片的原材料是大冶钢厂和扶顺钢厂生产的热轧棒材,其化学成分、金相组织和机械性能经复验符合YB675-73的要求。叶片经
1Cr11Ni2W2MoV and Cr17Ni2 stainless steel is mainly used in the manufacture of the shaft below 600 ℃, plates, leaves and other parts. In use, it has been found that five batches of materials containing different metal clamp block. Since all five batches of materials have been processed and involve more than 10,000 blades, the failure of this material has become a major quality problem in the factory. To this end, made some analysis of different metal clamp identification work. First, the failure of parts of the history and analysis of failure The leaves of the material is the Daye Steel and Fu Shun Steel production of hot-rolled bar, the chemical composition, microstructure and mechanical properties of the YB675-73 by re-examination meet the requirements. Leaf through