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过热器的材料
更新时间: 2020-06-27 00:00:00  

过热器管壁金属在锅炉受压部件中承受的温度最高,因此必须采用耐高温的优质低碳钢和各种铬钼合金钢等,在最高的温度部分有时还要用奥氏体铬镍不锈钢。锅炉运行中如果管道承受的温度超过材料的持久强度、疲劳强度或表面氧化所容许的温度限值,则会发生管道爆裂等事故。

关键词: 材料

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