ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2017, Vol. 38 ›› Issue (5): 13-16.

• 工艺技术 • 上一篇    下一篇

Φ219.1mm x9.5mm抗硫化氢腐蚀无缝管线钢管X52QS的生产实践

王学敏1,2, 邓叙燕1,2, 李健强1,2, 冯莹1,2, 李英真1,2, 胡楚江1,2   

  1. 1. 达力普石油专用管有限公司技术中心,沧州 061000;
    2. 河北省石油专用管工程技术研究中心,沧州 061000;
  • 收稿日期:2017-04-11 出版日期:2017-10-01 发布日期:2022-07-11
  • 作者简介:王学敏(1988-),女,硕士(2014年燕山大学),2011年燕山大学(本科)毕业,石油管产品的开发。

Production Practice of Φ219.1mm x9.5mm Anti-Hydrogen Sulfide Corrosion Seamless Pipe Line Steel Tube X52QS

Wang Xuemin1,2 , Deng Xuyan1,2 , Li Jianqiang1,2 , Feng Ying1,2 , Li Yinzhen1,2 , Hu Chujiang1,2   

  1. 1. R&D Center, Dalipal Pipe Co, Cangzhou 061000 ;
    2. Hebei OCTG Engineering Technology Research Center, Cangzhou 061000;
  • Received:2017-04-11 Published:2017-10-01 Online:2022-07-11

摘要: 根据API5L标准设计的X52QS管线钢管的化学成分为(/%):0.11~0.14C,0.20~0.35Si,0.95~1.20Mn,≤0.010P,≤0.0015S,0.10~0.20Ni,0.10~0.20Cu,0.008~0.020Ti,0.0015~0.0040Ca。采用"100t EAF-LF+VD精炼-Φ210mm圆坯连铸-精密斜轧机组轧制-880℃淬火-655℃回火调质热处理"工艺流程对X52QS钢管进行了批量化生产。主要工艺措施为电弧终点控制钢水温度1620~1640℃,0.05%~0.08%C,≤0.008%P,精炼渣组分(/%):58CaO,7SiO2,22Al2O3,8MgO,3%氟化物,VD后喂Ca-Si线等。检验结果表明,X52QS管线钢管的金相组织主要为铁素体+回火贝氏体,晶粒度≥8.5级,各类夹杂物的总和≤2级;力学性能和抗硫化氢腐蚀性能完全满足API 5L的标准要求;具有良好的焊接性能和低温冲击韧性,韧脆转变温度为-95℃。

关键词: X52QS管线钢管, 抗硫化気腐蚀, 化学成分, 调质处理, 生产实践

Abstract: Based on standard API 5L the designed chemical composition of pipe line steel tube X52QS is (/% ): 0.11~0. 14C, 0.20~0.35Si, 0.95~1.20Mn, ≤0.010P, ≤0.0015S, 0.10~0.20Ni, 0.10~0.20Cu, 0.008~0.020Ti, and 0.0015~0.0040Ca. The batch production of pipe line steel tube X52QS is carried out by process of 100t EAF-LF + VD refinig-Φ210mm round bloom casting-ACCU ROLL mill rolling-heat treatment quenching at 880°C -tempering at 655 ℃.The main process measures are EAF end controlling liquid temperature 1620~1640℃ , 0.05%~0.08%C, ≤0.008%P, refining slag ingredient (/%): 58CaO, 7SiO2, 22Al2O3, 8MgO and 3% fluoride, and feeding Ca-Si wire after VD process. The examination results show that the main structure of pipe line steel tube X52QS is ferrite + tempered bainite, the rating of grain size ≥8.5 , the total rating of various inclusions ≤2, the mechanical properties and antihydrogen sulfide corrosion performance meet the requirement of standard API 5L, and the steel tube has excellent weld and low temperature impact toughness and its ductile-brittle transition temperature is -95℃.