高强度高韧性X80管线钢的研制与应用  

Development and Application of X80 Pipeline Steel with High Strength and Toughness

作　　者：高珊[1] 郑磊[1] 

机构地区：[1]宝钢研究院结构钢研究所,上海201900

出　　处：《宝钢技术》2007年第2期1-4,共4页Baosteel Technology

摘　　要：由于长距离高压油气输送的需要,高强度高韧性管线用钢得到迅速发展。宝钢在完成“西气东输”工程用X70管线钢后,进行了更高强度级别X80管线钢的研制。现就宝钢X80管线钢的研制和应用情况,X80管线钢的成分、工艺、组织、性能和制成1016×15.3 mm螺旋焊管性能进行论述。合理的成分配合最佳的控轧控冷工艺,是X80管线钢获得具有针状铁素体微观组织和高的冲击韧性、优良的低温抗动态撕裂能力的关键。High strength and toughness pipeline steel is rapidly developed for the purpose of meeting the demands for oil and gas transportation featuring long distance and high pressure. The X80 pipeline steel with higher strength has been developed since Baosteel finished developing its X70 pipeline steel used in the West-East natural gas trans- mission project. On the basis of the development and application of Baosteel＇ s high strength and toughness X80 pipeline steel, its composition, techniques, microstructure and properties are discussed, together with the performance of SSAW pipes（ φ1 016 × 15.3 mm）. Reasonable composition, optimal controlled rolling and cooling have become the key factors for the pipeline steel to get acicular ferrite and properties of high strength, high toughness and excellent ability of resistance to dynamic cracking at the low temperature.

关 键 词：高强度 高韧性 X80 管线钢 

分 类 号：TF762[冶金工程—钢铁冶金]