【作者】 郭湛； 孙维； 于同仁； 汪开忠；

【Author】 Guo Zhan;Sun Wei;Yu Tongren;Wang Kaizhong;Technology center of Ma’anshan Iron&Steel Co.Ltd;

【机构】 马鞍山钢铁股份有限公司技术中心；

【摘要】 -165℃低温钢筋是LNG储罐工程建设的重要基础材料之一,目前完全依赖进口。本文在借鉴国内低温容器钢板的基础上,采用低P、低S的成分设计,成功开发出LNG储罐专用500MPa级耐-165℃低温钢筋,对低温钢筋的常温力学性能、-165℃低温力学性能、金相组织进行了研究,结果表明试制的低温钢筋具有较高的强度和塑性,尤其是良好的-165℃低温下的力学性能及缺口敏感性,可以满足LNG储罐的技术要求,填补了国内产品的空白。更多还原

【Abstract】 -165℃ cryogenic steel bar is one of the important basic material for LNG storage tank, depending on import from abroad so far. Based on internal steel plates for low temperature pressure vessels, 500MPa-165℃ cryogenic steel bar was manufactured successfully by low-P、S component in this paper. Their ambient mechanical properties、low temperature mechanical properties、microstructure were researched. Results showed that they had high strength and ductility, especially good-165℃mechanical properties and. Notch Sensitivity Ratio They could satisfy with requirements of LNG..It will fill a domestic gap in this field.更多还原