超超临界锅炉末级过热器升级改造中的材料质量问题

Material Quality Problems Occurring in Finishing Superheater Upgrading Retrofit of an Ultra-supercritical Boiler

对某超超临界锅炉末级过热器改造工程中发现的原材料质量问题进行了分析,主要有材料性能不合格和钢管表面存在线性缺陷等两个问题,避免了末级过热器带缺陷运行,确保了升级改造的质量。

An introduction is being presented to the raw material quality problems spotted in the finishing superheater during upgrading retrofit of an ultra-supercritical boiler, like unqualified material properties and linear defects existing on surface of the steel tubes. The troubleshooting avoids the operation with defects in the finishing superheater and ensures the quality of upgrading retrofit.