95钢级超级13Cr马氏体不锈钢套管的开发  

Development of 95 Super 13Cr Martensitic Stainless Steel Casing

作　　者：李倩 唐科 彭俊 曹玉鑫 LI Qian;TANG Ke;PENG Jun;CAO Yuxin(Daye Special Steel Co.,Ltd.,Huangshi 435001,China;Hubei Provincial Key Laboratory of High Quality Special Steel,Huangshi 435001,China)

机构地区：[1]大冶特殊钢有限公司,湖北黄石435001 [2]湖北省高品质特殊钢重点实验室,湖北黄石435001

出　　处：《钢管》2023年第6期16-20,共5页Steel Pipe

摘　　要：介绍了Φ139.7 mm×9.17 mm规格95钢级超级13Cr马氏体不锈钢套管的开发情况。通过控制C、Cr、Ni、Mo等元素的含量抑制δ铁素体的产生,添加Ti防止晶间腐蚀,降低N元素含量避免TiN夹杂物产生的化学成分优化设计,研究了CPE顶管机组纵轧成型及1 000℃淬火+610℃回火热处理工艺,检测了95钢级超级13Cr马氏体不锈钢套管的力学性能、显微组织、表面质量和尺寸。分析认为,各项性能均完全满足ISO 13680:2020标准要求。Described here in the paper are the activities for development of the Φ139.7 mm×9.17 mm 95 super 13Cr martensitic stainless steel casing.The optimal design of the steel composition is made by taking such actions as properly controlling the contents of Elements C,Cr,Ni and Mo.,etc.to inhibit development ofδferrite,adding Ti to prevent intergranular corrosion,and reducing N content to avoid formation of TiN inclusion.The longitudinal rolling shaping process of the CPE push bench mill and the 1000℃ quenching+600℃ tempering heat treatment process are studied,and the mechanical properties,the microstructure,the surface quality and dimensions of the said casing are tested and measured.It is concluded via the analysis that all the properties of the 95 super 13Cr martensitic stainless steel casing are satisfactory to the requirements as specified under Standard ISO 13680:2020.

关 键 词：超级13Cr不锈钢 95钢级 Δ铁素体 CPE顶管 

分 类 号：TG142.71[一般工业技术—材料科学与工程]