酸性油田管线管用无缝钢管抗腐蚀性能分析  

Analysis on Anti-corrosion Property of Seamless Steel Linepipe for Acidic Oil Field

作　　者：李艳[1] 赵兴亮[1] 刘江成[1] 赵春辉[1] LI Yan;ZHAO Xingliang;LIU Jiangcheng;ZHAO Chunhui(Tianjin Pipe (Group)Corporation,Tianjin 300301,China)

机构地区：[1]天津钢管集团股份有限公司,天津300301

出　　处：《钢管》2019年第1期24-27,共4页Steel Pipe

摘　　要：介绍对最小名义屈服强度为450 MPa(65 kpsi)的抗硫化氢应力腐蚀管线管采用四点弯曲方法制备SSC试样,进行抗H2S应力腐蚀评价,超声波探伤、冲击性能试验和金相分析的试验过程。评价试验结果显示,该抗硫化氢腐蚀管线管SSC试样通过超声波探伤未发现裂纹及开裂。评价试验试样未有明显的性能降低,内部未有氢致裂纹,具有很好的抗氢渗入能力。试样表面状态局部的微腐蚀,为表面的均匀腐蚀,腐蚀产物为FeS。管线管组织均匀、晶粒度细小,能阻止氢的进一步扩展,对材料的抗硫化氢腐蚀性能有着重要的影响。The testing procedures for the anti-SSC linepipe with a minimum nominal yield strength as 450 MPa(65 kpsi)are elaborated here in the paper,including preparing the SSC specimen with the 4-point bending method, performing SSC resistance evaluation,ultrasonic flaw detection,impact testing and metallographic analysis,etc.It is identified by the evaluation test results that no flaw or cracking is found with the said SSC specimen via the ultrasonic detection.And the specimen properties are not obviously reduced,and has no sign of HIC,having very good antihydrogen penetration property.The local micro-con'osion found on the specimen surface is regarded as homogeneous corrosion,and the corrosive product is FeS.The said linepipe has homogeneous structure composed of fine grains which is capable of stopping further hydrogen expansion,thus has significant effect on the SSC resistance of the material.

关 键 词：无缝钢管 管线管 酸性环境 抗硫化氢腐蚀 硫化物应力腐蚀开裂 湿磁粉探伤 

分 类 号：TG172.3[金属学及工艺—金属表面处理]