公开(公告)号：US20150027656A1

公开(公告)日：2015-01-29

申请号：US14384981

申请日：2012-03-13

申请人： Fuping Tang ,  Zhen Li ,  Xiaofeng Wang ,  Peng Fei ,  Jinsong Meng ,  Yue Zhang ,  Yong Ma ,  Wenzhong Wang ,  Zhiwen Zhang ,  Xiaohan Wang ,  Meng Guo ,  Zhigang Zhao ,  Yang Lin ,  Guoqiang Xin ,  Weizhi Yao

发明人： Fuping Tang ,  Zhen Li ,  Xiaofeng Wang ,  Peng Fei ,  Jinsong Meng ,  Yue Zhang ,  Yong Ma ,  Wenzhong Wang ,  Zhiwen Zhang ,  Xiaohan Wang ,  Meng Guo ,  Zhigang Zhao ,  Yang Lin ,  Guoqiang Xin ,  Weizhi Yao

IPC分类号： C21C7/064 ,  B22D11/00

CPC分类号： C21C7/064 ,  B22D11/001 ,  C21C1/025 ,  C21C5/35 ,  C21C5/36 ,  C21C7/0043 ,  C21C7/0068 ,  C21C7/0087 ,  C21C7/0645 ,  C21C7/072 ,  C21C7/10 ,  C21C2300/08

摘要： A method for preparing low-cost clean steel includes steps of: preliminarily desulfurizing iron melt: preliminarily desulfurizing in an iron melt channel during blast furnace tapping and during iron folding in an iron folding room, adding a desulfurizing ball into the iron melt during the blast furnace tapping or the iron folding; dephosphorizing and controlling sulfur: dephosphorizing and controlling sulfur during converter steelmaking, in such a manner that P≦0.014% and S≦0.004% during tapping; rapidly dephosphorizing by slag-forming: rapidly dephosphorizing by slag-forming during converter tapping, at a converter end point, controlling a C content at 0.02˜0.10%, adding a dephosphorizing ball through an alloy chute during the converter tapping, blowing argon and stirring at the same time; purifying steel melt during RH refining: adding a purifying ball at a late stage of the RH refining when a vacuum degree is at 66.7˜500 Pa; and continuously casting with whole-process protection.

摘要翻译： 制备低成本清洁钢的方法包括以下步骤：预先将铁熔体脱硫：在高炉出钢期间和铁折叠期间在铁熔体通道中预先脱硫，在铁折叠室中铁折叠期间，在爆炸期间向铁熔体中加入脱硫球 炉膛或熨斗折叠; 脱磷控制硫：在转炉炼钢过程中脱磷和控制硫，使得出钢时P＆lt; 0.014％和S＆NlE; 0.004％; 通过成渣快速脱磷：在转炉攻丝期间通过炉渣形成快速脱磷，在转炉终点，控制C含量为0.02〜0.10％，在转炉出料过程中加入脱磷球通过合金槽，吹氩并搅拌 与此同时; 在RH精炼期间净化钢熔体：当真空度为66.7〜500Pa时，在RH精炼的后期添加净化球; 并持续铸造全过程保护。

公开(公告)号：US09708676B2

公开(公告)日：2017-07-18

申请号：US14384981

申请日：2012-03-13

申请人： Fuping Tang ,  Zhen Li ,  Xiaofeng Wang ,  Peng Fei ,  Jinsong Meng ,  Yue Zhang ,  Yong Ma ,  Wenzhong Wang ,  Zhiwen Zhang ,  Xiaoshan Wang ,  Meng Guo ,  Zhigang Zhao ,  Yang Lin ,  Guoqiang Xin ,  Weizhi Yao

发明人： Fuping Tang ,  Zhen Li ,  Xiaofeng Wang ,  Peng Fei ,  Jinsong Meng ,  Yue Zhang ,  Yong Ma ,  Wenzhong Wang ,  Zhiwen Zhang ,  Xiaoshan Wang ,  Meng Guo ,  Zhigang Zhao ,  Yang Lin ,  Guoqiang Xin ,  Weizhi Yao

IPC分类号： C21C1/02 ,  C21C7/06 ,  C21C7/064 ,  C21C7/00 ,  C21C7/10 ,  B22D11/00 ,  C21C5/35 ,  C21C5/36 ,  C21C7/072

CPC分类号： C21C7/064 ,  B22D11/001 ,  C21C1/025 ,  C21C5/35 ,  C21C5/36 ,  C21C7/0043 ,  C21C7/0068 ,  C21C7/0087 ,  C21C7/0645 ,  C21C7/072 ,  C21C7/10 ,  C21C2300/08

摘要： A method for preparing low-cost clean steel includes steps of: preliminarily desulfurizing iron melt: preliminarily desulfurizing in an iron melt channel during blast furnace tapping and during iron folding in an iron folding room, adding a desulfurizing ball into the iron melt during the blast furnace tapping or the iron folding; dephosphorizing and controlling sulfur: dephosphorizing and controlling sulfur during converter steelmaking, in such a manner that P≦0.014% and S≦0.004% during tapping; rapidly dephosphorizing by slag-forming: rapidly dephosphorizing by slag-forming during converter tapping, at a converter end point, controlling a C content at 0.02˜0.10%, adding a dephosphorizing ball through an alloy chute during the converter tapping, blowing argon and stirring at the same time; purifying steel melt during RH refining: adding a purifying ball at a late stage of the RH refining when a vacuum degree is at 66.7˜500 Pa; and continuously casting with whole-process protection.