河北兴泰发电有限责任公司9号炉运行累计114890h,对仍在该部位运行的再热器T91钢管进行寿命评估,基于化学分析、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、透射电镜检查等试验基础上进行持久强度试验,采用持久强度等温线外推法校核,其剩余寿命仍然大于10万h。 Hebei Xingtai Power Generation Co., Ltd. No. 9 furnace operation total 114890h, reheater T91 still operating in this part of the pipe life assessment, based on chemical analysis, short-term tensile test (room temperature, high temperature), hardness test, Analysis of the structure of carbides, transmission electron microscopy and other tests based on the durability of the test, the use of long-term strength isotherm extrapolation of the check, the remaining life is still greater than 100,000 h.