本发明公开了一种特厚管线钢用钢板的制造方法,采用超低碳微合金设计与超级控轧、控冷工艺相结合,钢板获得了超细铁素体+贝氏体的组织结构,获得良好的强韧性匹配,保证了性能的均匀性。
The invention discloses a manufacturing method for a steel plate used for extra-thick pipeline steel. By combining ultra-low carbon microalloy design with super controlled rolling and controlled cooling process, the steel plate acquires the microstructure of ultra-fine ferrite + bainite, achieves good matching of strength and toughness, and ensures the uniformity of performance.