【作者】 董瑞峰； 孙丽钢； 刘哲； 刘彦春； 王国栋；

【Author】 Dong Ruifeng~(1,2) Sun Ligang~(1,2) Liu Zhe~1 Liu Yanchun~3 Wang Guodong~3 (1.Baotou Iron & Steel (Group) Co.,Ltd.,Compact Strip Production Plant,Baotou,014010; 2.College of Material and Metallurgical of IMUST,Baotou,014010; 3.The State Key Lab of Rolling & Automation,Northeastem University,Shenyang,110004)

【机构】 包钢薄板坯连铸连轧厂； 轧制技术及连轧自动化国家重点实验室(东北大学)；

【摘要】 介绍了在包钢 CSP 生产线上应用层流冷却+超快速冷却工艺开发590MPa 级热轧双相钢的情况：以一种低 C-Mn 钢为原料,采用薄板坯连铸-连轧,层流冷却和超快速冷却工艺,得到厚度为4～11mm 的590MPa 级热轧双相钢；组织为铁素体+马氏体,马氏体体积分数为8%～12%；抗拉强度为590～620MPa,屈服强度为385～455MPa, 断后总延伸率为30%～35%；试用于重型卡车的车轮轮辐,使用性能良好。更多还原

【Abstract】 An industrial experimem of developing 590MPa grade dual-phase hot strip steel using laminar cooling+ultra-fast cooing technology on Baotou CSP line was introduced in the present work.The 4～11mm thickness test dual-phase steel with C-Mn raw material was produced by using thin-slab continuous casting,continuous rolling,laminar cooling and ultra-fast cooling process;The microstructures of the test dual-phase steel are ferrite+martensite.The volume fraction of martensite is 8%～12%;The tensile strength of 590～620MPa,the yield strength of 385～455MPa,the total elongation of 30%～35%. The wheel disk of heave-duty truck with the good formability was made of the test dual-phase steel.更多还原