Practicing on Producing DDQ Cold Rolling Deep-Drawn Steel by HMPT-BOF-RH-CSP-CR in LY Steel
CSP is the characteristics of high cooling rate and tiny precipitated particles of second phase particles, and suitable to produce high strength strip steel. It is a real challenge to produce cold-rolling deep-drawn grade by using CSP-CR technology. This article briefly introduced the chemical and physical metallurgy processes of producing cold-rolling deep drawn grade by HMPT-BOF-RH-CSP-CR technology in LY steel, and then emphatically analyzed the influence of compositions control and technology control to the property of cold-rolling deep-drawn DDQ, finally discussed the influence of steel cleanliness, namely inclusions to the property of deep drawn steel. The results showed: (1) the main chemical components of DDQ were C ≤35ppm, Si ≤0.01%; (2) the contents of the main harmful and inclusion formation elements were S ≤0.009%, N ≤20ppm, O ≤24ppm; (3) the main performance of the cold-rolled stamping using steel produced by SPHE are transverse direction Rp0.2=163MPa, Rm=294MPa, n=0.22, r=2.47, and vertical direction Rp0.2=165MPa, Rm=298MPa, n=0.21, r=2.37, 45° direction Rp0.2=169MPa, Rm=304MPa, n=0.20, r=2.28.
RH CSP CR DDQ
WU Guang-liang CHENG Xiao-jun PENG Wei CHEN Lian-gui LI Guang-hui LIANG Wu ZHU Jian-xue
Department of Steel Metallurgy of Central South University, Changsha 410083, Hunan, China Hunan Vali Hunan Valin Lianyuan Iron and Steel Co.Ltd, Loudi 417009, Hunan, China
国际会议
2009年薄板坯连铸连轧国际研讨会(TSCR 2009)(2009 International Symposium on Thin Slab Casting and Rolling)
南京
英文
165-172
2009-05-13（万方平台首次上网日期，不代表论文的发表时间）