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Blowout failure analysis of heat-exchange tube in waste heat boiler
Pages: 197-202
Year: Issue:  S1
Journal: Heat Treatment of Metals

Keyword:  0Cr18Ni10T i连多硫酸 应力腐蚀;
Abstract: 本文根据0Cr18Ni10Ti废热锅炉管服役环境,通过成分分析、金相检验、扫描电镜观察、X射线能谱分析、力学性能测试等方法对废热锅炉换热管爆裂进行失效分析,研究了锅炉管爆裂原因。结果表明:换热管爆管属于有氯离子参与的连多硫酸应力腐蚀开裂,来源是换热管未按标准要求进行固溶处理,导致换热管具有较高残余应力,应力主要为环向张应力。
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