期刊文献+

电厂过热器用12Cr2MoWVTiB钢管使用温度上限的探讨

Discussion on Upper Temperature Limit of 12Cr2MoWVTiB Steel Tube in Superheater for Power Plant
分享 导出
摘要 以某电厂在当量温度585℃运行约14万h的过热器受热面12Cr2MoWVTiB钢管作为研究对象,研究了其宏观形貌、化学成分、显微组织及室温和高温力学性能,对其使用温度上限进行了探讨。结果表明:该钢管未出现明显的胀粗和减薄现象,组织中未见蠕变孔洞,组织老化级别为3级,室温力学性能比未服役的略有下降,仍满足标准要求;该钢管在运行约14万h后仍具有良好的抗高温蠕变性能,其持久强度仅比标准指标低12.1 MPa;结合该电厂过热器受热面管的运行情况认为,12Cr2MoWVTiB钢受热面管可以在585℃下安全运行,这与DL/T 715-2015规定的575℃使用温度上限有所冲突。 A superheater in power plant was operated at equivalent temperature of 585℃for 140 000h;Macromorphology,chemical composition,microstructure and mechanical properties at room temperature and elevated temperature of the heat surface tube of 12Cr2MoWVTiB steel from the superheater were studied,and upper temperature limit of the steel tube was discussed.The results show that no obvious swelling and thinning were observed in the steel tube.No creep holes were found in the microstructure and the aging grade of microstructure was grade 3.The mechanical properties at room temperature were slightly lower than those of unoperated steel tube,and still met the standard requirements.After service for about 140 000h,the steel tube still had good hightemperature creep resistance;the stress-rupture strength was only 12.1MPa lower than the standard requirement.Considering the running situation of heat surface tube in superheator of the power plant,it was suggested that 12Cr2MoWVTiB steel heat surface tube can be reliably operated at temperatures no higher than 585℃;this conflicts with the 575℃upper temperature limit specified in DL/T 715-2015.
作者 句光宇 王体 宋利 袁红玉 刘文生 谢照增 王志武 JU Guangyu;WANG Ti;SONG Li;YUAN Hongyu;LIU Wensheng;XIE Zhaozeng;WANG Zhiwu(Central-China Electric Power Research Institute,China Datang Corporation Science and Technology Research Institute,Zhengzhou 450001,China;Pingdingshan Branch,State Power Investment Corporation Henan Electric Power Generation Co.,Ltd.,Pingdingshan 467321,China;Datang Sanmenxia Huayang Power Co.,Ltd.,Sanmenxia 472100,China;School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China)
出处 《机械工程材料》 CAS CSCD 北大核心 2019年第3期24-28,共5页 Materials For Mechanical Engineering
关键词 耐热钢 显微组织 力学性能 使用温度上限 heat-resistant steel microstructure mechanical property upper temperature limit
作者简介 句光宇(1990-),男,山西朔州人,工程师,硕士.
  • 相关文献

参考文献4

二级参考文献5

  • 1刘丛涛,黄业胜.HG2008/186—M锅炉热偏差问题探讨[J].中国电力,1996,29(3):3-8. 被引量:10
  • 2冶金部钢铁研究院102钢专题组.102钢的合金化问题及显微组织[J].新金属材料,1978,(4):1-5. 被引量:1
  • 3周颐深.低合金耐热钢[M].上海:上海人民出版社,1976.. 被引量:1
  • 4束德林.金属学原理[M].西安:西北工业大学出版社,1987.. 被引量:1
  • 5王英姝,马国潜,艾宝瑞,王建生,邓星临.12Cr2MoWVTiB钢(M-A)相的相变机制及其精细结构的透射电镜研究[J]金属学报,1979(04). 被引量:1

共引文献5

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈