摘要
基于深海脐带缆用水下管汇用高性能超级奥氏体铁素体双相不锈钢力学性能、点腐蚀性能要求,进行合金成分设计与优化,采用AOD炉加Al脱氧-钙处理以及炉外精炼,提出热穿孔-高温中间固溶处理、变形量及分配的一体化冷变形调控关键技术。生产出的深海管汇用高性能S32750超级奥氏体铁素体双相不锈钢无缝管具有较高力学性能和良好的耐点腐蚀性能,可以满足深海油气生产使用标准,适应深海水下苛刻的海水介质环境使用要求。
Based on the requirements of the mechanical properties and pitting-corrosion resistance of the high per-formance super austenitic ferrite duplex stainless steel for underwater manifold of deep-sea umbilical cable,the alloy com-position is designed and optimized.Adopting AOD furnace with Al deoxidation-calcium treatment and off-furnace refining,the key technologies for adjustment and control of integrated cold deformation of hot piercing-high temperature intermediate solution treatment,deformation and distribution are proposed.After hot piercing.As a result the high-performance S32750 super austenitic ferrite duplex stainless steel seamless pipe for deep-sea manifold service as produced with the abovemen-tioned processes possesses rather high mechanical properties and excellent pitting-corrosion resistance,having met the applicable specification of deep-sea oil and gas production and been adaptable to the deep sea service in the harsh sea-water medium environment.
作者
高虹
周立初
彭锦
潘盼
孙亚峰
江贞星
章新宇
GAO Hong;ZHOU Lichu;PENG Jin;PAN Pan;SUN Yafeng;JIANG Zhenxing;ZHANG Xinyu(Jiangsu Wujin Stainless Steel Pipe Group Co.,Ltd.,Changzhou 213111,China;College of Material and Engineering,Southeast University,Nanjing 211102,China;Zhongtian Keji Submarine Cable Co.,Ltd.,Nantong 226010,China;Jiangsu Aijisi Ocean S&T Co.,Ltd.,Yancheng 224345,China)
出处
《钢管》
CAS
2024年第6期23-28,共6页
Steel Pipe
关键词
双相不锈钢
S32750
盘管
深海脐带缆
duplex stainless steel
S32750
steel coil
deep-sea umbilical cable
