BNS、X60QS和X65QS钢级耐酸性腐蚀管线管的开发

Development of BNS, X60QS and X65QS Grade AcidCorrosion-resistant Line Pipe

文章介绍了BNS、X60QS和X65QS钢级耐酸性腐蚀管线管的成分设计和工业试制过程,研究了正火工艺和调质工艺对热轧之后钢管的金相组织及机械性能的影响,分析了产品的耐酸性腐蚀性能。试制结果表明,采用正火工艺生产的BNS钢级管线管的机械性能和耐酸性腐蚀性能完全满足API Spec 5L规范要求,采用调质工艺生产的X60QS钢级和X65QS钢级管线管的机械性能和耐酸性腐蚀性能完全满足API Spec 5L规范要求。

In the paper,the composition design and industrial trial production process of BNS,X60QS and X65QS grade acid corrosion-resistant line pipe are introduced,the effects of normalizing,quenching and tempering processes on metallographic structure and mechanical properties of the hot rolled steel pipe are studied as well as acid corrosion resistance of the product is analyzed.The trial production results showed that the mechanical properties and acid corrosion resistance of BNS grade line pipe produced with normalizing process as well as X60QS grade and X65QS grade line pipes produced with quenching and tempering process could fully satisfy the API Spec 5L standard requirements.