Industrial Experiment of Developing C-Mn Dual-Phase Hot Strip Steel Using Ultra Fast Cooling Technology on CSP Line
An industrial experiment of developing 540MPa grade dual-phase hot strip steel using ultra-fast cooing technology on Baotou CSP line was introduced in the present work. The test dual-phase steel,whose thickness is of 6 mm, was roduced by using thin-slab continuous rolling and two stage cooling process, including of laminar and ultra fast cooling; The microstructures of the test dual-phase steel are ferrite and martensite. The volume fraction of martensite is 12％; the mechanical properties of the test dual-phase steel are uniform in widthwise and lengthwise with the tensile strength of 555565MPa, the yield strength of 335~355MPa, the total elongation of 31~34％, the yield ratio of 0.59~0.64 and the n value of 0.18. The test dual-phase steel with good service performance has been used tentatively for making the beam and the tail-board of heave-duty truck.
Ultra-fast cooling Dual-phase hot strip steel Thin-slab continuous rolling yield ratio n value
刘彦春 刘相华 王国栋 董瑞峰 闫 波
轧制技术及连轧自动化国家重点实验室（东北大学）,沈阳,110004 包头钢铁集团公司薄板坯连铸连轧厂,包头,014010
国际会议
辽宁
英文
2006-10-21（万方平台首次上网日期，不代表论文的发表时间）