核电站安全壳变位系统殷钢丝材腐蚀分析  

Corrosion analysis of displacement measurement system for nuclear power plant containment with invar steel wire material

作　　者：申彤 朱建斌 鲍宇 李恒敬 芦瑶 陈可润 SHEN Tong;ZHU Jianbin;BAO Yu;LI Hengjing;LU Yao;CHEN Kerun(Central Research Institute of Building and Construcion,Co.,Ltd.,MCC Group,Beijing 100088,China;Inspection and Certification Co.,Ltd.,MCC,Haikou 570125,Hainan,China;School of Architectural Engineering Tianjin University,Beijing 100088,China;Hainan Nuclear Power Co.,Ltd.,Tianjin 300072,China)

机构地区：[1]中冶建筑研究总院有限公司,北京100088 [2]海南核电有限公司,海南海口570125 [3]中冶检测认证有限公司,北京100088 [4]天津大学建筑工程学院,天津300072

出　　处：《金属功能材料》2024年第4期97-106,共10页Metallic Functional Materials

基　　金：中国五矿集团有限公司青年科技基金项目(2022QNJJ01)。

摘　　要：针对某核电站安全壳变位测量系统丝材发生腐蚀断裂等问题,亟需选择出一种适宜某核电站安全壳变位现场监测丝材。基于此,首先根据某核电站现场环境统计数据以及参考标准制定了试验环境参数;其次通过文献调研法与实际调研确定了试验材料和实验方法:针对4类镍铁合金(殷钢)丝材(4J29、4J32、4J36、S4J32A)、不锈钢和TM-V221双酚A环氧拉挤树脂(碳纤维),制定了盐雾加速腐蚀老化试验,从而评估不同种类监测丝材的腐蚀情况、耐腐蚀性能、质量变化以及力学性能变化。试验结果表明:不锈钢材料和碳纤维材料的腐蚀情况、耐腐蚀性能优于殷钢材料;殷钢材料腐蚀程度由轻微腐蚀到重度腐蚀以及耐腐蚀时间由长到短依次为4J29、S4J32A、4J36;根据最大力、抗拉强度和屈服强度指标由强到弱依次为殷钢材料4J29和4J32、碳纤维材料、不锈钢材料、殷钢材料4J36和S4J32A。To address the issues of corrosion and fracture of the monitoring wires in the containment shell displacement measurement system of a certain nuclear power plant,it is urgently necessary to select a suitable monitoring wire for on-site use.To achieve this,first establishes experimental environmental parameters based on statistical data from the on-site environment of the nuclear power plant and reference standards.Secondly,experimental materials and methods are determined through literature review and practical investigation:a salt spray accelerated corrosion aging test was developed for four types of nickel-iron alloy(Invar) wires(4J29,4J32,4J36,S4J32A),stainless steel,and TM-V221 bisphenol a epoxy pultruded resin(carbon fiber),aiming to assess the corrosion condition,corrosion resistance,quality changes,and mechanical property variations of different types of monitoring wires.The test results indicate that the corrosion condition and corrosion resistance of stainless steel and carbon fiber materials are superior to those of Invar materials.The degree of corrosion in Invar materials ranges from slight to severe,with the corrosion resistance time being longest for 4J29,followed by S4J32A,and then 4J36.Regarding maximum strength,tensile strength,and yield strength,the order from strongest to weakest is Invar materials 4J29 and 4J32,carbon fiber materials,stainless steel materials,and Invar materials 4J36 and S4J32A.

关 键 词：核电站 变位监测 盐雾老化试验 腐蚀分析 

分 类 号：TM623[电气工程—电力系统及自动化] TG172[金属学及工艺—金属表面处理]