使用21年后主蒸汽管道的性能变化及其安全评估  

MATERIAL PROPERTY CHANGES OF MAIN STEAM PIPING AFTER 21 YEARS OPERATION AND SAFETY EVALUATION

作　　者：徐宏[1] 杨镇[1] 董雷云[1] 潘缉悌[1] 

机构地区：[1]华东理工大学化工机械研究所,上海200237

出　　处：《理化检验（物理分册）》2000年第7期310-314,共5页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：对某石化热电厂材质为 1 0 Cr Mo91 0 ,服役时间超过 1 0万 h的主蒸汽管道进行全面检测与安全评估。对 1 1 7个现场测定的硬度值进行统计分析 ,介绍了新管材、旧管母材及焊缝的常温和高温拉伸试验结果 ,- 60～ 550°C各温度下冲击功值 ,以及由试验结果确定的韧脆性转变温度 。Main steam piping made of 10CrMo910 steel in power plant which has been operating at elevated temperature for more than 100,000 hours was inspected and safety evaluated. Hardness data for 117 points were analyzed statistically. Results of charpy impact test for base material and weld of main steam piping were compared with those of new pipe, including impact toughness and brittle ductile transition temperature (BDTT) of materials. The influence of long term service at high temperature on the BDTT of materials was also discussed.

关 键 词：主蒸汽管道 检验 韧脆性转变温度 热电厂 安全评 

分 类 号：TM621.4[电气工程—电力系统及自动化]