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1.发明授权Method for manufacturing hot-rolled sheet having fine-grained ferrite, and hot-rolled sheet 有权具有细粒铁素体的热轧板的制造方法和热轧板公开(公告)号：US08404060B2
公开(公告)日：2013-03-26
申请号：US12525094
申请日：2007-02-02
IPC分类号： C21D8/00
摘要： A method for manufacturing a hot-rolled sheet is provided, wherein the method attains grain refinement of the steel sheet containing C, Si, and Mn, wherein the grain size thereof is set to particularly below average of 2 μm, which has ferrite grain with equiaxed morphology, which has high formability in forming, and the ferrite grain-size deviation in the thickness direction is uniformed down to the level not higher than a predetermined amount whereby uniform formability in forming is high. The method includes a first rolling for rolling the sheet such that the total rolling reduction is 80% or more or the average grain size is 30 μm or less in a form of single phase of austenite, a second rolling of a single-pass, a third rolling being conducted thereafter, and a following cooling.
摘要翻译： 提供了一种制造热轧板的方法，其中该方法对含有C，Si和Mn的钢板进行晶粒细化，其中其晶粒尺寸设定为特别低于2μm的平均值，其具有铁素体晶粒与 等轴形状，其形成成形性高，并且厚度方向的铁素体晶粒尺寸偏差均匀化到不高于预定量的水平，从而均匀成形性高。 该方法包括第一次轧制，以使得总的轧制压下量为80％以上，或平均粒径为30μm以下，奥氏体的单相，单程次的第二轧制， 此后进行第三次轧制，并进行随后的冷却。
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2.发明申请公开(公告)号：US20100089505A1
公开(公告)日：2010-04-15
申请号：US12525094
申请日：2007-02-02
摘要： The present invention provides a method for manufacturing the hot-rolled sheet, which includes: a step A including a first rolling in which a steel sheet containing 0.04-0.20% C, 0.01-2.0% Si, 0.5-3.0% Mn by mass, and the reminder being Fe and inevitable impurities, is rolled by successive multi-pass rolling at a total rolling reduction of 80% or more while keeping the steel sheet at temperatures not lower than the para-equilibrium transformation temperature Ae3; a step B including a second rolling in which a single-pass rolling is carried out at a rolling reduction of 30-55% when an entry side temperature is not lower than the para-equilibrium transformation temperature Ae3; a step C including a third rolling in which a single-pass rolling is carried out at a rolling reduction of 35-70% when an entry side temperature is set within a predetermined range; and a step D in which within 0.2 seconds after the third rolling, the rolled sheet is cooled at a cooling rate of 600 degree C./sec or higher to a temperature not higher than {(the para-equilibrium transformation temperature Ae3)−130 degree C.}, in the step C, the third rolling being carried out: within 0.6 seconds after the second rolling when the predetermined temperature range is {(the para-equilibrium transformation temperature Ae3)−60 degree C.} or more and below {(the para-equilibrium transformation temperature Ae3)−30 degree C.}; within 0.5 seconds after the second rolling when the predetermined temperature range is {(the para-equilibrium transformation temperature Ae3)−30 degree C.} or more and below {(the para-equilibrium transformation temperature Ae3)−5 degree C.}; and within 0.3 seconds after the second rolling when the predetermined temperature range is {(the para-equilibrium transformation temperature Ae3)−5 degree C.} or more and below {(the para-equilibrium transformation temperature Ae3)+20 degree C.}.
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3.发明申请METHOD FOR MANUFACTURING HOT-ROLLED SHEET HAVING FINE-GRAINED FERRITE, AND HOT-ROLLED SHEET 审中-公开用于制造具有细粒铁粉的热轧板和热轧板的方法公开(公告)号：US20140086787A1
公开(公告)日：2014-03-27
申请号：US13792458
申请日：2013-03-11
摘要： A method for manufacturing a hot-rolled sheet attains grain refinement of the steel sheet whose grain size is extremely fine. In particular, a ferrite grain size of less than average 2 μm is obtained, which is not laminar but has ferrite grains with equiaxed morphology and exhibits high formability in forming. The method comprises the steps of rolling and cooling, wherein the rolling reductions, cooling steps, and temperature are closely regulated. A hot rolled sheet made from the method of manufacturing has a controlled ferrite grain in different regions of sheet thickness.
摘要翻译： 热轧板的制造方法可以获得晶粒细化的钢板的晶粒细化。 特别地，得到小于2μm的铁素体晶粒尺寸，其不是层状的，而是具有等轴形态的铁素体晶粒，并且在成型时表现出高的成形性。 该方法包括滚动和冷却的步骤，其中滚动减少，冷却步骤和温度被严格地调节。 由制造方法制成的热轧板在板厚不同的区域具有受控的铁素体晶粒。
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公开(公告)号：US10774412B2
公开(公告)日：2020-09-15
申请号：US14130530
申请日：2012-06-29
申请人： Norio Imai , Masayuki Wakita , Takuya Nishio , Jun Haga , Kengo Hata , Yasuaki Tanaka , Mitsuru Yoshida , Hiroshi Takebayashi , Suguhiro Fukushima , Toshiro Tomida
发明人： Norio Imai , Masayuki Wakita , Takuya Nishio , Jun Haga , Kengo Hata , Yasuaki Tanaka , Mitsuru Yoshida , Hiroshi Takebayashi , Suguhiro Fukushima , Toshiro Tomida
IPC分类号： C21D8/02 , C22C38/12 , C22C38/02 , C22C38/06 , C22C38/04 , C22C38/00 , C21D9/46 , C23C2/02 , C23C2/04
摘要： A hot-dip galvanized cold-rolled steel sheet has a tensile strength of 750 MPa or higher, a composition consisting, in mass percent, C: more than 0.10% and less than 0.25%, Si: more than 0.50% and less than 2.0%, Mn: more than 1.50% and 3.0% or less, and optionally containing one or more types of Ti, Nb, V, Cr, Mo, B, Ca, Mg, REM, and Bi, P: less than 0.050%, S: 0.010% or less, sol. Al: 0.50% or less, and N: 0.010% or less, and a main phase as a low-temperature transformation product and a second phase as retained austenite. The retained austenite volume fraction is more than 4.0% and less than 25.0% of the whole structure, and has an average grain size of less than 0.80 μm. A number density of retained austenite grains having a grain size of 1.2 μm or more is 3.0×10−2/μm2 or less.
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5.发明申请公开(公告)号：US20140212686A1
公开(公告)日：2014-07-31
申请号：US14130530
申请日：2012-06-29
申请人： Norio Imai , Masayuki Wakita , Takuya Nishio , Jun Haga , Kengo Hata , Yasuaki Tanaka , Mitsuru Yoshida , Hiroshi Takebayashi , Suguhiro Fukushima , Toshiro Tomida
发明人： Norio Imai , Masayuki Wakita , Takuya Nishio , Jun Haga , Kengo Hata , Yasuaki Tanaka , Mitsuru Yoshida , Hiroshi Takebayashi , Suguhiro Fukushima , Toshiro Tomida
摘要： A hot-dip galvanized cold-rolled steel sheet has a tensile strength of 750 MPa or higher, a composition consisting, in mass percent, of C: more than 0.10% and less than 0.25%, Si: more than 0.50% and less than 2.0%, Mn: more than 1.50% and 3.0% or less, and optionally containing one or more types of Ti, Nb, V, Cr, Mo, B, Ca, Mg, REM, and Bi, P: less than 0.050%, S: 0.010% or less, sol. Al: 0.50% or less, and N: 0.010% or less, and a main phase as a low-temperature transformation product and a second phase as retained austenite. The retained austenite volume fraction is more than 4.0% and less than 25.0% of the whole structure, and has an average grain size of less than 0.80 □m. A number density of retained austenite grains having a grain size of 1.2 □m or more is 3.0□10−2/□m2 or less.
摘要翻译： 热浸镀锌冷轧钢板的拉伸强度为750MPa以上，以质量％计，C：0.10以上且小于0.25％的Si：超过0.50％以下 2.0％，Mn：大于1.50％和3.0％以下，并且任选地含有一种或多种Ti，Nb，V，Cr，Mo，B，Ca，Mg，REM和Bi，P：小于0.050％ ，S：0.010％以下，溶胶。 Al：0.50％以下，N：0.010％以下，作为低温相变产物的主相和作为残留奥氏体的第二相。 残留奥氏体体积分数大于整个结构的4.0％以上且小于25.0％，平均粒径小于0.80μm。 晶粒尺寸为1.2μm以上的残留奥氏体晶粒的数密度为3.0×10 -2 /□m 2以下。
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6.发明授权公开(公告)号：US09358594B2
公开(公告)日：2016-06-07
申请号：US13625096
申请日：2012-09-24
CPC分类号： B21B28/04 , B21B27/10 , B21B38/006 , B21B45/0284 , B21B2261/20 , B21B2265/12
摘要： Provided is a manufacturing apparatus and manufacturing method of hot-rolled steel sheet which enables uniform cooling of a rolled material and improvement of the surface properties thereof. The manufacturing apparatus comprises: a rolling stand; a supplying device capable of supplying lubricant to work rolls and/or backup rolls; an online roll grinding device; and a removing device capable of removing at least part of the lubricant before the surface of the work rolls is ground by the grinding device. The manufacturing method comprises the steps of: removing at least part of the lubricant adhered to the work rolls, or to the work rolls and backup rolls using the lubricant removing device after completing rolling of a preceding material; grinding the work rolls using the online roll grinding device after the removing step; and supplying the lubricant to the work rolls and/or backup rolls from the lubricant supplying device.
摘要翻译： 提供一种能够均匀地冷却轧制材料并提高其表面性能的热轧钢板的制造装置和制造方法。 制造装置包括：轧制机架; 能够向工作辊和/或支承辊供给润滑剂的供给装置; 在线辊磨机; 以及能够在通过研磨装置研磨工作辊的表面之前能够去除至少一部分润滑剂的除去装置。 该制造方法包括以下步骤：在完成轧制前面的材料之后，使用所述润滑剂去除装置去除附着在所述工作辊上的至少一部分润滑剂，或者移除所述工作辊和所述支承辊; 在拆卸步骤后使用在线滚动研磨装置研磨工作辊; 并将润滑剂从润滑剂供给装置供给到工作辊和/或支承辊。
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7.发明授权Rolled plate joining apparatus and continuous hot rolling apparatus equipped with the same 失效轧制板接合装置和配备有其的连续热轧装置
公开(公告)号：US6010055A
公开(公告)日：2000-01-04
申请号：US967903
申请日：1997-11-12
申请人： Nobuhiro Tazoe , Toshio Iwanami , Masami Oki , Kouiti Sakamoto , Suguhiro Fukushima , Toshihiro Mori
发明人： Nobuhiro Tazoe , Toshio Iwanami , Masami Oki , Kouiti Sakamoto , Suguhiro Fukushima , Toshihiro Mori
IPC分类号： B21B1/22 , B21B1/02 , B21B1/24 , B21B1/26 , B21B1/46 , B21B15/00 , B21B39/14 , B23Q11/10 , B23K37/047
CPC分类号： B21B15/0085 , B21B1/26 , B21B39/14 , B23Q11/10 , B21B1/024 , B21B1/224 , B21B1/46 , B21B15/0007 , B21B2015/0057 , Y10T29/5184 , Y10T408/45 , Y10T408/46 , Y10T409/304032 , Y10T409/304144 , Y10T483/15 , Y10T483/1736 , Y10T483/174
摘要： There is provided a rolled plate joining apparatus equipped with a truck that can travel reversibly in the rolling direction, tailing end pinch rolls that are mounted on the truck and can be moved vertically with the tailing end of a preceding rolled plate pinched horizontally, leading end pinch rolls that are mounted on the truck and can pinch horizontally the leading end of a succeeding rolled plate, machining apparatuses for cutting one surface of the tailing end of the preceding rolled plate and the other surface of the leading end of the succeeding rolled plate, and a pressure welding apparatus for compressing the preceding rolled plate and the succeeding rolled plate with the machined surfaces of the preceding rolled plate and the succeeding rolled plate overlapped to reduce them approximately to the thickness of the rolled plates, including a tailing end centering apparatus placed between the tailing end pinch rolls and the pressure welding apparatus for pressing the opposite width ends of the tailing end of the rolled plate to align the center line of the rolled plate with the center line of the joining apparatus in the rolling direction and a leading end centering apparatus placed between the pressure welding apparatus and the leading end pinch rolls for pressing the opposite width ends of the leading end of the rolled plate to align the center line of the rolled plate with the center line of the joining apparatus in the rolling direction.
摘要翻译： 本发明提供了一种装有卡车的轧制板接合装置，其能够在轧制方向上可逆地移动，拖尾端夹送辊安装在卡车上，并且可以在先前的轧制板的拖尾端水平地夹紧的状态下垂直移动， 夹持辊安装在卡车上，可以水平地夹紧后续轧制板的前端，用于切割前一轧制板的尾端的一个表面和后续轧制板的前端的另一个表面的加工装置， 以及用于压缩先前的轧制板和随后的轧制板的压力焊接装置，其中前轧制板和随后的轧制板的加工表面重叠，以将它们大致减小到轧制板的厚度，包括设置在尾部定中心装置 在后端夹送辊和用于按压相对的wi的压力焊接装置之间 轧制板的后端的第二端部，使轧制板的中心线与轧制方向的接合装置的中心线对准，并且将前端定心装置配置在压接装置与前端夹送辊之间， 将轧制板的前端的相对的宽度端压入轧制板的中心线与轧制方向的中心线对准。
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8.发明授权公开(公告)号：US08850860B2
公开(公告)日：2014-10-07
申请号：US13625283
申请日：2012-09-24
申请人： Daisuke Nikkuni , Suguhiro Fukushima , Yoshiro Washikita , Tetsuo Kajihara , Kenji Horii , Taro Sato
发明人： Daisuke Nikkuni , Suguhiro Fukushima , Yoshiro Washikita , Tetsuo Kajihara , Kenji Horii , Taro Sato
CPC分类号： B21B37/72 , B21B1/24 , B21B1/26 , B21B37/64 , B21B2265/12 , B21B2273/14
摘要： Provided is a method of controlling operation of a tandem rolling mill which enables large reduction rolling in the latter-stage stand of the tandem rolling mill necessary for manufacturing fine-grained steel, and so on. The method comprises: a step of determining a first exit-side sheet thickness in rolling a constant portion of a material to be rolled; and a step of determining a second exit-side sheet thickness in rolling a front end portion of the material, such that a pre-tightening load becomes a set value or less; the material is rolled into the second exit-side sheet thickness, until the front end portion is fed into the stands; the constant portion is rolled by the stand given a pre-tightening load into the first exit-side sheet thickness; and the second exit-side sheet thicknesses of the stands given the pre-tightening load are made larger than the first exit-side sheet thickness.
摘要翻译： 提供一种控制串联式轧机的操作的方法，其能够在制造细晶钢所需的串列式轧机的后级机架中进行大的压下等。 该方法包括：确定第一出口侧片材厚度滚动待轧制材料的恒定部分的步骤; 以及确定在材料的前端部分滚动的第二出口侧片材厚度的步骤，使得预紧负载变为设定值或更小; 将材料卷入第二出口侧片材厚度，直到前端部分被供给到支架中; 所述恒定部分通过预紧力负载被所述支架轧制到所述第一出口侧板材厚度中; 并且使得具有预紧力负载的支架的第二出口侧片材厚度大于第一出口侧片材厚度。
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9.发明申请公开(公告)号：US20130019646A1
公开(公告)日：2013-01-24
申请号：US13625283
申请日：2012-09-24
申请人： Daisuke NIKKUNI , Suguhiro Fukushima , Yoshiro Washikita , Tetsuo Kajihara , Kenji Horii , Taro Sato
发明人： Daisuke NIKKUNI , Suguhiro Fukushima , Yoshiro Washikita , Tetsuo Kajihara , Kenji Horii , Taro Sato
IPC分类号： B21B37/16
CPC分类号： B21B37/72 , B21B1/24 , B21B1/26 , B21B37/64 , B21B2265/12 , B21B2273/14
摘要： Provided is a method of controlling operation of a tandem rolling mill which enables large reduction rolling in the latter-stage stand of the tandem rolling mill necessary for manufacturing fine-grained steel, and so on. The method comprises: a step of determining a first exit-side sheet thickness in rolling a constant portion of a material to be rolled; and a step of determining a second exit-side sheet thickness in rolling a front end portion of the material, such that a pre-tightening load becomes a set value or less; the material is rolled into the second exit-side sheet thickness, until the front end portion is fed into the stands; the constant portion is rolled by the stand given a pre-tightening load into the first exit-side sheet thickness; and the second exit-side sheet thicknesses of the stands given the pre-tightening load are made larger than the first exit-side sheet thickness.
摘要翻译： 提供一种控制串联式轧机的操作的方法，其能够在制造细晶钢所需的串列式轧机的后级机架中进行大的压下等。 该方法包括：确定第一出口侧片材厚度滚动待轧制材料的恒定部分的步骤; 以及确定在材料的前端部分滚动的第二出口侧片材厚度的步骤，使得预紧负载变为设定值或更小; 将材料卷入第二出口侧片材厚度，直到前端部分被供给到支架中; 所述恒定部分通过预紧力负载被所述支架轧制到所述第一出口侧板材厚度中; 并且使得具有预紧力负载的支架的第二出口侧片材厚度大于第一出口侧片材厚度。
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10.发明授权Rolled plate joining apparatus and continuous hot rolling apparatus equipped with the same 有权轧制板接合装置和配备有其的连续热轧装置公开(公告)号：US06189763B1
公开(公告)日：2001-02-20
申请号：US09384592
申请日：1999-08-27
申请人： Nobuhiro Tazoe , Toshio Iwanami , Masami Oki , Kouiti Sakamoto , Suguhiro Fukushima , Toshihiro Mori
发明人： Nobuhiro Tazoe , Toshio Iwanami , Masami Oki , Kouiti Sakamoto , Suguhiro Fukushima , Toshihiro Mori
IPC分类号： B23K2000
CPC分类号： B21B15/0085 , B21B1/024 , B21B1/224 , B21B1/26 , B21B1/46 , B21B15/0007 , B21B39/14 , B21B2015/0057 , B23Q11/10 , Y10T29/5184 , Y10T408/45 , Y10T408/46 , Y10T409/304032 , Y10T409/304144 , Y10T483/15 , Y10T483/1736 , Y10T483/174
摘要： There is provided a rolled plate joining apparatus equipped with a truck that can travel reversibly in the rolling direction, tailing end pinch rolls that are mounted on the truck and can be moved vertically with the tailing end of a preceding rolled plate pinched horizontally, leading end pinch rolls that are mounted on the truck and can pinch horizontally the leading end of a succeeding rolled plate, machining apparatuses for cutting one surface of the tailing end of the preceding rolled plate and the other surface of the leading end of the succeeding rolled plate, and a pressure welding apparatus for compressing the preceding rolled plate and the succeeding rolled plate with the machined surfaces of the preceding rolled plate and the succeeding rolled plate overlapped to reduce them approximately to the thickness of the rolled plates, including a tailing end centering apparatus placed between the tailing end pinch rolls and the pressure welding apparatus for pressing the opposite width ends of the tailing end of the rolled plate to align the center line of the rolled plate with the center line of the joining apparatus in the rolling direction and a leading end centering apparatus placed between the pressure welding apparatus and the leading end pinch rolls for pressing the opposite width ends of the leading end of the rolled plate to align the center line of the rolled plate with the center line of the joining apparatus in the rolling direction.
摘要翻译： 本发明提供了一种装有卡车的轧制板接合装置，其能够在轧制方向上可逆地移动，拖尾端夹送辊安装在卡车上，并且可以在先前的轧制板的拖尾端水平地夹紧的状态下垂直移动， 夹持辊安装在卡车上，可以水平地夹紧后续轧制板的前端，用于切割前一轧制板的尾端的一个表面和后续轧制板的前端的另一个表面的加工装置， 以及用于压缩先前的轧制板和随后的轧制板的压力焊接装置，其中前轧制板和随后的轧制板的加工表面重叠，以将它们大致减小到轧制板的厚度，包括设置在尾部定中心装置 在后端夹送辊和用于按压相对的wi的压力焊接装置之间 轧制板的后端的第二端部，使轧制板的中心线与轧制方向的接合装置的中心线对准，并且将前端定心装置配置在压接装置与前端夹送辊之间， 将轧制板的前端的相对的宽度端压入轧制板的中心线与轧制方向的中心线对准。
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