河北兴泰发电有限责任公司9号炉运行累计114892.5 h,对仍在该部位运行的T91钢再热器管进行性能评定,根据其温度分布,重点对运行温度较高的高温再热器外一圈进行取样,采取化学分析、短时拉伸试验(常温、高温)、硬度试验、金相分析、碳化物结构分析、透射电镜检查等手段进行抽样检测分析。结果表明,抽检管样性能仍优于各标准要求,显微组织强化效果明显,因此允许在额定工况下继续安全运行。 Hebei Xingtai Power Generation Co., Ltd. No. 9 furnace operation total 114892.5 h, still operating in this part of the T91 steel reheater tube performance assessment, according to its temperature distribution, focusing on the operating temperature of high temperature reheater outside a Circle sampling, chemical analysis, short-term tensile test (room temperature, high temperature), hardness test, metallographic analysis, carbide structure analysis, transmission electron microscopy and other means of sampling and analysis. The results show that the performance of the sampling tube is still better than the standard requirements, the microstructure strengthening effect is obvious, thus allowing the safe operation of the rated conditions continue to work.