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    Manufacturing Method for Strip Casting 550 MPa-Grade High Strength Atmospheric Corrosion-Resistant Steel Strip
    2.
    发明申请
    Manufacturing Method for Strip Casting 550 MPa-Grade High Strength Atmospheric Corrosion-Resistant Steel Strip 有权
    带钢铸造的制造方法550MPa级高强度大气耐腐蚀钢带

    公开(公告)号：US20150007913A1

    公开(公告)日：2015-01-08

    申请号：US14371053

    申请日：2013-02-18

    申请人： Baoshan Iron & Steel Co., Ltd.

    发明人： Xiufang Wang ,  Yuan Fang ,  Yan Yu ,  Jianchun Wu ,  Bo Qin

    IPC分类号： C21D8/02

    CPC分类号： C21D8/0215 ,  B21B1/463 ,  B22D11/001 ,  B22D11/002 ,  B22D11/0622 ,  B22D11/0637 ,  C21D8/00 ,  C21D8/0263 ,  C21D9/52 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

    摘要： A manufacturing method for strip casting 550 MPa-grade high strength atmospheric corrosion-resistant steel strip, comprising the following steps: 1) smelting, where the chemical composition of a molten steel is that: C is between 0.03-0.08%, Si≦0.4%, Mn is between 0.6-1.5%, P is between 0.07-0.22%, S≦0.01%, N≦0.012%, Cu is between 0.25-0.8%, Cr is between 0.3-0.8%, and Ni is between 0.12-0.4%, additionally, also comprised is at least one micro-alloying element among Nb, V, Ti, and Mo, where Nb is between 0.01-0.08%, V is between 0.01-0.08%, Ti is between 0.01-0.08%, and Mo is between 0.1-0.4%, and where the remainder is Fe and unavoidable impurities; 2) strip casting, where a 1-5 mm-thick cast strip is casted directly; 3) cooling the strip, where the cooling rate is greater than 20° C./s; 4) online hot rolling the cast strip, where the hot rolling temperature is between 1050-1250° C., where the reduction rate is between 20-50%, and where the deformation rate is >20s−1; austenite online recrystallizing after hot rolling, where the thickness of the hot rolled strip is between 0.5-3.0 mm; and, 5) cooling and winding, where the cooling rate is between 10-80° C./s, and where the winding temperature is between 570-720° C. The microscopic structure of a steel strip acquired is primarily constituted by fine polygonal ferrite and pearlite.

    摘要翻译： 一种550MPa级高强度大气耐腐蚀钢带的铸造制造方法，包括以下步骤：1）熔炼，其中钢水的化学组成为：C为0.03-0.08％，Si＆NlE; 0.4 ％，Mn在0.6-1.5％之间，P在0.07-0.22％之间，S＆NlE; 0.01％，N＆lt; lE; 0.012％，Cu在0.25-0.8％之间，Cr在0.3-0.8％之间，Ni在0.12- 0.4％，另外还包含Nb，V，Ti和Mo中的至少一种微合金元素，其中Nb在0.01-0.08％之间，V在0.01-0.08％之间，Ti在0.01-0.08％之间， 并且Mo在0.1-0.4％之间，其余部分是Fe和不可避免的杂质; 2）带钢铸造，其中直接铸造1-5mm厚的铸钢带; 3）冷却条，其中冷却速率大于20℃/秒; 4）在线热轧铸钢带，其中热轧温度在1050-1250℃之间，其中压下率在20-50％之间，变形率> 20s-1; 热轧后的奥氏体在线再结晶，其中热轧带材的厚度在0.5-3.0mm之间; 和5）冷却和卷绕，其中冷却速率在10-80℃/ s之间，并且其中卷绕温度在570-720℃之间。获得的钢带的微观结构主要由细多边形 铁素体和珠光体。

    Method for Manufaturing Thin Strip Continuously Cast 700MPa-Grade High Strength Weather-Resistant Steel
    4.
    发明申请
    Method for Manufaturing Thin Strip Continuously Cast 700MPa-Grade High Strength Weather-Resistant Steel 有权
    制造薄膜连续铸造700MPa级高强度耐候钢的方法

    公开(公告)号：US20140366602A1

    公开(公告)日：2014-12-18

    申请号：US14372678

    申请日：2013-02-18

    申请人： Baoshan Iron & Steel Co., Ltd.

    发明人： Yuan Fang ,  Xiufang Wang ,  Yan Yu ,  Jianchun Wu ,  Feng Zhang ,  Wei He

    IPC分类号： B21B1/26

    CPC分类号： B21B1/26 ,  B21B2001/225 ,  B22D11/0622 ,  C21D8/00 ,  C21D8/005 ,  C21D8/0426 ,  C21D9/52 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16

    摘要： A method for manufacturing thin strip continuously cast 700 Mpa grade high strength weather-resistant steel, the method comprising the following steps: 1) casting a 1-5 mm thick cast strip in a double roller continuous casting machine, the cast strip comprising the following chemical compositions by weight percent: C 0.03-0.1%, Si≦0.4%, Mn 0.75-2.0%, P 0.07-0.22%, S≦0.01%, N≦0.012%, and Cu 0.25-0.8%, further comprising more than one of Nb, V, Ti and Mo: Nb 0.01-0.1%, V 0.01-0.1%, Ti 0.01-0.1%, and Mo 0.1-0.5%, and the balance being Fe and unavoidable impurities; 2) cooling the cast strip at a rate greater than 20° C./s; 3) hot rolling the cast strip under a temperature of 1050-1250° C. at a reduction rate of 20-50% and a deformation rate greater than 20 s-1; then conducting austenite online recrystallization, the thickness of the hot rolled strip being 0.5-3.0 mm; 4) cooling at a rate of 10-80° C./s; and 5) rolling up under a temperature of 500-650° C. The obtained steel strip microstructure mainly consists of uniformly distributed bainites and needle-shaped ferrites.

    摘要翻译： 一种连续浇铸700Mpa级高强度耐候钢的薄带钢的制造方法，该方法包括以下步骤：1）在双辊连续铸造机中铸造1-5mm厚的铸钢带，铸造带包括以下 化学组成重量百分比：C 0.03-0.1％，Si＆NlE; 0.4％，Mn 0.75-2.0％，P 0.07-0.22％，S＆NlE; 0.01％，N＆lt; lE; 0.012％和Cu 0.25-0.8％ Nb，V，Ti和Mo：Nb中0.01-0.1％，V 0.01-0.1％，Ti 0.01-0.1％，Mo 0.1-0.5％，余量为Fe和不可避免的杂质; 2）以大于20℃/ s的速率冷却铸钢带; 3）在1050-1250℃的温度下以20-50％的压缩率和大于20s-1的变形率对铸造带进行热轧; 然后进行奥氏体在线再结晶，热轧带材的厚度为0.5-3.0mm; 4）以10-80℃/ s的速率冷却; 和5）在500-650℃的温度下卷起。得到的钢带组织主要由均匀分布的贝氏体和针状铁氧体组成。

    Manufacturing Method for Strip Casting 700 MPa-Grade High Strength Atmospheric Corrosion-Resistant Steel
    6.
    发明申请
    Manufacturing Method for Strip Casting 700 MPa-Grade High Strength Atmospheric Corrosion-Resistant Steel 有权
    700MPa级高强度大气耐腐蚀钢带的铸造制造方法

    公开(公告)号：US20140373981A1

    公开(公告)日：2014-12-25

    申请号：US14372699

    申请日：2013-02-18

    申请人： Baoshan Iron & Steel Co., Ltd.

    发明人： Xiufang Wang ,  Yuan Fang ,  Yan Yu ,  Jianchun Wu ,  Bo Qin

    IPC分类号： C21D8/02 ,  C21D9/52 ,  B22D11/06

    CPC分类号： C21D8/0215 ,  B22D11/001 ,  B22D11/0622 ,  B22D11/116 ,  B22D11/12 ,  C21D8/0226 ,  C21D8/0263 ,  C21D9/52 ,  C21D2211/002 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58

    摘要： A manufacturing method for strip casting 700 MPa-grade high strength atmospheric corrosion-resistant steel, comprising the following steps: 1) smelting, where the chemical composition of a molten steel in terms of weight percentage is that C is between 0.03-0.1%, Si≦0.4%, Mn is between 0.75-2.0%, P is between 0.07-0.22%, S≦0.01%, N≦0.012%, Cu is between 0.25-0.8%, Cr is between 0.3-0.8%, and Ni is between 0.12-0.4%, additionally, also comprised is at least one micro-alloying element among Nb, V, Ti, and Mo, where Nb is between 0.01-0.1%, V is between 0.01-0.1%, Ti is between 0.01-0.1%, and Mo is between 0.1-0.5%, and where the remainder is Fe and unavoidable impurities; 2) strip casting, where a 1-5 mm-thick cast strip is casted directly; 3) cooling the cast strip, where the cooling rate is greater than 20° C./s; 4) online hot rolling the cast strip, where the hot rolling temperature is between 1050-1250° C., where the reduction rate is between 20-50%, and where the deformation rate is >20s−1; austenite online recrystallizing after hot rolling, where the thickness of the hot rolled strip is between 0.5-3.0 mm; and, 5) cooling and winding, where the cooling rate is between 10-80° C./s, and where the winding temperature is between 520-670° C. The microscopic structure of a steel strip acquired is primarily constituted by evenly distributed bainite and acicular ferrite.

    摘要翻译： 700MPa级高强度大气耐腐蚀钢的带钢铸造的制造方法，包括以下步骤：1）熔融，其中钢水的重量百分比的化学组成为C在0.03〜0.1％之间， Si％，0.4％，Mn在0.75〜2.0％之间，P在0.07〜0.22％之间，S＆NlE; 0.01％，N＆amp; NlE; 0.012％，Cu在0.25-0.8％之间，Cr在0.3-0.8％之间，Ni是 在0.12-0.4％之间，另外还包含Nb，V，Ti和Mo中的至少一种微合金元素，其中Nb在0.01-0.1％之间，V在0.01-0.1％之间，Ti在0.01-0.1％之间， 0.1％，Mo在0.1-0.5％之间，余量为Fe和不可避免的杂质; 2）带钢铸造，其中直接铸造1-5mm厚的铸钢带; 3）冷却铸钢带，其中冷却速率大于20℃/ s; 4）在线热轧铸钢带，其中热轧温度在1050-1250℃之间，其中压下率在20-50％之间，变形率> 20s-1; 热轧后的奥氏体在线再结晶，其中热轧带材的厚度在0.5-3.0mm之间; 和5）冷却和卷绕，其中冷却速率在10-80℃/ s之间，并且其中卷绕温度在520-670℃之间。获得的钢带的微观结构主要由均匀分布的 贝氏体和针状铁素体。