公开(公告)号：US10076783B2

公开(公告)日：2018-09-18

申请号：US15307854

申请日：2015-05-12

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Naoki Tajima ,  Akihiro Yamanaka ,  Kenji Taguchi

IPC: B22D11/128 ,  B22D11/16 ,  B22D11/041 ,  B21B1/04 ,  B22D11/12 ,  B21B1/02 ,  B21B1/46

CPC classification number: B22D11/041 ,  B21B1/026 ,  B21B1/04 ,  B21B1/463 ,  B21B2001/028 ,  B21B2201/14 ,  B22D11/1206 ,  B22D11/1282 ,  B22D11/16 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08

Abstract: A primary object of this invention is to provide a continuous casting method by which a slab of excellent internal quality can be obtained even if the casting speed is changed. In this invention, upon continuous casting with two pairs of the reduction rolls arranged along a casting direction and support rolls arranged between the reduction rolls, when a casting speed is reduced compared to a state where combination of reduction with reduction rolls at a first stage on an unsolidified portion of the slab and reduction with reduction rolls at a second stage on a solidified portion thereof is employed, the combination is switched to combination of reduction with the reduction rolls at the first stage on a portion of the slab at an end of solidification and the reduction with the reduction rolls at the second stage on the solidified portion thereof.

公开(公告)号：US20180001377A1

公开(公告)日：2018-01-04

申请号：US15546401

申请日：2016-01-22

Applicant: JFE STEEL CORPORATION

Inventor： Keigo TOISHI ,  Hiroyuki OHNO ,  Norichika ARAMAKI ,  Yuji MIKI

IPC: B22D11/124 ,  B22D11/20

CPC classification number: B22D11/1246 ,  B21B1/466 ,  B21B2201/14 ,  B22D11/1206 ,  B22D11/1282 ,  B22D11/20 ,  B22D11/207 ,  B22D11/225

Abstract: Provided is a continuous casting method of steel that prevents a solidification completion position from being changed even when a drawing speed V of a cast slab is changed. The method includes drawing a cast slab by setting a drawing speed V0 while spraying cooling water to the cast slab at a cooling water spray amount W0 [kg/ton-cast slab]. Then, changing the drawing speed to the speed V1 while spraying cooling water to the cast slab at a cooling water spray amount W1 [kg/ton-cast slab]. The method further includes spraying cooling water to the cast slab at a cooling water spray amount Wt [kg/ton-cast slab] during a period of time t that is obtained by dividing a target length Lt by the drawing speed V0. The water spray amount Wt satisfying either formula (1): Wt W1 under a condition of V1>V0.

公开(公告)号：US20170326627A1

公开(公告)日：2017-11-16

申请号：US15532531

申请日：2014-12-24

Applicant: JFE Steel Corporation

Inventor： Keigo Toishi ,  Hiroyuki Ono ,  Norichika Aramaki ,  Yuji Miki

IPC: B22D11/20 ,  B22D11/128

CPC classification number: B22D11/207 ,  B21B1/463 ,  B21B2201/14 ,  B22D11/041 ,  B22D11/1206 ,  B22D11/1282 ,  B22D11/1287

Abstract: Conditions for soft reduction are determined in a method of continuous casting in accordance with a method utilizing the thickness of a slab strand to prevent center segregation from occurring in the strand due to an insufficient pressing rate or internal cracks from occurring in the strand due to an excessively high pressing rate.

公开(公告)号：US08021599B2

公开(公告)日：2011-09-20

申请号：US12378305

申请日：2009-02-13

Applicant: Fritz-Peter Pleschiutschnigg ,  Karl-Ernst Hensger ,  Dieter Rosenthal ,  Rainer Teworte ,  Dieter Tembergen

Inventor： Fritz-Peter Pleschiutschnigg ,  Karl-Ernst Hensger ,  Dieter Rosenthal ,  Rainer Teworte ,  Dieter Tembergen

IPC: C21B13/12 ,  C21C5/28 ,  C21C7/076 ,  C21C7/10

CPC classification number: C21C7/10 ,  B21B1/26 ,  B21B1/466 ,  B21B3/02 ,  B21B37/74 ,  B21B37/76 ,  B21B45/004 ,  B21B45/08 ,  B21B2201/14 ,  C21C5/5264 ,  C21C5/5294 ,  C21D8/02 ,  Y02P10/216 ,  Y10T29/5184

Abstract: A method for producing steel products (1) with optimum surface quality wherein the molten steel (1b) is produced in a process route (10, 100; 12; 13) that is selected according to a desired final microstructure (9), by melting in a furnace (2b) with an electrode system (31), and in a vacuum degassing system; or by melting in a furnace installation (35) or an individual furnace vessel (30), in a ladle furnace (25), and in a differential-pressure vacuum degassing system (43); or by melting in a furnace (2b) with additions of alloying materials (26), a partial-quantity degassing in the ladle furnace (25), or a vacuum degassing system (27) and a ladle degassing (27).

Abstract translation: 一种用于生产具有最佳表面质量的钢产品（1）的方法，其中在根据期望的最终微结构（9）选择的工艺路线（10,100; 12; 13）中，通过熔化 在具有电极系统（31）的炉（2b）中，并在真空脱气系统中; 或在熔炉装置（35）或单独的炉容器（30）中，在钢包炉（25）中和在差压真空脱气系统（43）中熔化; 或者通过添加合金材料（26），在钢包炉（25）或真空脱气系统（27）和钢包脱气（27）中的部分数量的脱气在炉（2b）中熔化。

公开(公告)号：US20100116456A1

公开(公告)日：2010-05-13

申请号：US12450290

申请日：2008-03-20

Applicant: Gianpietro Benedetti ,  Alfredo Poloni ,  Nuredin Kapaj

Inventor： Gianpietro Benedetti ,  Alfredo Poloni ,  Nuredin Kapaj

IPC: B22D11/20 ,  B22D11/00 ,  B22D11/14 ,  B22D11/126

CPC classification number: B21B1/463 ,  B21B1/26 ,  B21B13/22 ,  B21B39/00 ,  B21B39/006 ,  B21B45/004 ,  B21B45/008 ,  B21B45/08 ,  B21B2201/10 ,  B21B2201/14 ,  B21B2201/18 ,  B22D11/1206 ,  Y02P70/127 ,  Y02P70/129 ,  Y10T29/49991

Abstract: A process and an ultracompact plant for the endless production of hot rolled steel strip comprising an ingot mould (15) that produces a very thin slab, having narrow sides with thickness in the range between 40 and 55 mm and a central swelling, at a speed in the range between 4 and 16 m/min. Such a slab, which displays a core in which the steel is still liquid, is passed through a vertical pre-rolling device (16) that reduces the thickness of the slab and flattens it. The solidified slab may thus be subjected to a first mild rolling by a conveyor (17) and, by forming a free curve, takes a horizontal position where it is subjected to a first surface descaling, a first rolling, a heating in an inductor (23), a second surface descaling and a series of reductions in a rolling mill (30) formed by at least two stands, by maintaining its temperature along the mill above the recrystallisation point Ar3. Downstream of the rolling mill (30) there are provided a roller runway with cooling showers, a flying shear (33) for cutting to length the strip produced, pinch rolls and at least two spinning wheels (34) for the formation of coils of the hot rolled strip.

Abstract translation: 一种用于无限制生产热轧钢带的方法和一种超紧凑型工厂，包括铸锭模具（15），其制造非常薄的板坯，其厚度在40和55mm之间的窄边和中心膨胀 在4和16米/分钟之间的范围内。 这种显示钢仍然是液体的芯的板坯通过垂直的预轧装置（16），从而减小了板坯的厚度并使其平坦化。 因此，凝固的板坯可以通过输送机（17）进行第一次轻度轧制，并且通过形成自由曲线取水平位置，在其中进行第一表面除鳞，第一轧制，电感器中的加热 23），由至少两个支架形成的轧机（30）的第二表面除鳞和一系列减少，通过将其沿着轧机的温度保持在再结晶点Ar3之上。 在轧机（30）的下游设置有具有冷却淋浴器的滚轮跑道，用于切割所生产的带材的卷轴剪切（33），夹送辊和至少两个旋转轮（34），用于形成 热轧带钢。

公开(公告)号：US20070272054A1

公开(公告)日：2007-11-29

申请号：US10559802

申请日：2004-05-25

Applicant: Fritz-Peter Pleschiutschnigg ,  Karl-Ernst Hensger ,  Dieter Rosenthal ,  Rainer Teworte ,  Dieter Tembergen

Inventor： Fritz-Peter Pleschiutschnigg ,  Karl-Ernst Hensger ,  Dieter Rosenthal ,  Rainer Teworte ,  Dieter Tembergen

IPC: C21C5/52

CPC classification number: C21C7/10 ,  B21B1/26 ,  B21B1/466 ,  B21B3/02 ,  B21B37/74 ,  B21B37/76 ,  B21B45/004 ,  B21B45/08 ,  B21B2201/14 ,  C21C5/5264 ,  C21C5/5294 ,  C21D8/02 ,  Y02P10/216 ,  Y10T29/5184

Abstract: Disclosed are a method and an installation for producing steel products (1) having an optimum surface quality, especially extremely low carbon contents (UCL steel or IF steel), nitrogen contents, total oxygen contents, high-strength or stainless steel qualities. According to the invention, the liquid steel is cast into a thin slab (5a) from a process route (10, 11, 12, or 13) that is selected according to the desired final structure (9) based on an electric-arc furnace (2b), is descaled, cut into billets (15) having a partial length, optionally descaled once again, subjected to final descaling downstream from a holding furnace (16), milled in a finishing mill train (6a), rolled up in a rolling station (20) located downstream from the last finishing mill stand (19) or downstream from a cooling section (21), and the final structure (9) is adjusted in the cooling section (21) according to the desired steel quality by cooling on a run-out roller table (22), whereupon the rolling stock (1a) is completely rolled up in a second rolling station (23).

Abstract translation: 公开了一种具有最佳表面质量，特别是极低碳含量（UCL钢或IF钢），氮含量，总氧含量，高强度或不锈钢质量的钢产品（1）的制造方法和装置。 根据本发明，液态钢从根据期望的最终结构（9）选择的工艺路线（10,11,12或13）铸造成薄板坯（5a），基于电弧 炉（2b）被除鳞，切成具有部分长度的坯料（15），再次可选地除去，在保持炉（16）的下游进行最终除垢，在精轧机（6a）中研磨，轧制 在位于上一个精轧机架（19）下游的轧制工位（20）中或冷却部分（21）的下游，并且根据期望的钢在冷却部分（21）中调节最终结构（9） 在排出辊台（22）上进行冷却的质量，于是在第二轧制站（23）中车辆（1a）被完全卷起。

公开(公告)号：US20050167076A1

公开(公告)日：2005-08-04

申请号：US10503873

申请日：2003-01-28

Applicant: Wolfgang Hennig ,  Karl Rittmer ,  Sitki Altuntop ,  Manfred Kolakowski

Inventor： Wolfgang Hennig ,  Karl Rittmer ,  Sitki Altuntop ,  Manfred Kolakowski

IPC: B21B1/46 ,  B21B15/00 ,  B21B41/08 ,  B22D11/12 ,  B22D11/20 ,  B22D11/00

CPC classification number: B22D11/1226 ,  B21B1/46 ,  B21B41/08 ,  B21B2015/0014 ,  B21B2201/14

Abstract: Disclosed are a method and a corresponding continuous casting machine (1) for continuously rolling a metal bar, particularly a steel bar, which is produced at a casting speed and the cross section of which is configured as a thin slab. Said metal bar is bent, dressed, and cut to length as required during cooling and is fed into a first roll stand for rolling once the temperature has been equalized. Optionally the metal bar can still be fed by modifying the casting machine by supporting (3) a vertically cast continuous slab (2) having a guide length that is adjusted to the casting rate. One or several segments of said continuous slab (2) is/are then dressed by bending and straightening, whereupon the continuous slab (2) is guided by a sling (11), which is supported from below, into a straightening driver (6) that is positioned at a distance approximately equivalent to the length of the sling before being cut to length (7).

Abstract translation: 公开了一种用于连续轧制金属棒，特别是钢棒的方法和相应的连续铸造机（1），其以铸造速度生产并且其横截面被构造为薄板坯。 所述金属棒在冷却期间根据需要弯曲，修整并切割成长度，并且一旦温度均衡，就被送入第一辊架以进行轧制。 可选地，通过支撑（3）具有根据铸造速率调整的导向长度的垂直铸造的连续板坯（2），可以通过改变铸造机器来供给金属棒。 所述连续板坯（2）的一个或几个部分通过弯曲和矫直进行修整，于是连续板坯（2）由从下方支撑的吊索（11）引导到矫直驱动器（6）中， 在被切割成长度（7）之前，该距离大致等于吊索的长度。

公开(公告)号：US06216770B1

公开(公告)日：2001-04-17

申请号：US09187270

申请日：1998-11-06

Applicant: Karl-Ernst Hensger ,  Manfred Kolakowski ,  Ingo Schuster ,  David J. Rintoul

Inventor： Karl-Ernst Hensger ,  Manfred Kolakowski ,  Ingo Schuster ,  David J. Rintoul

IPC: B21C4300

CPC classification number: B21B1/46 ,  B21B1/463 ,  B21B45/00 ,  B21B45/04 ,  B21B2201/14 ,  B22D11/12 ,  Y10T29/45

Abstract: A method of improving the surface quality of a continuously cast slab, particularly a thin slab having a maximum cast thickness of 100 mm, wherein the slab is covered with a casting slag film and a layer of scale, and wherein the slab is descaled after casting and is rolled in a finishing train. A reaction agent, which is different from water, is applied onto the slab prior to descaling or during descaling. The application of the reaction agent may be preceded by a conventional hydraulic, mechanical or pneumatic removal of the layer of scale which covers the slab.

Abstract translation: 一种提高连续铸造板坯，特别是最大铸造厚度为100mm的薄板坯的表面质量的方法，其中板坯被铸造炉渣膜和一层标尺覆盖，并且其中在铸造后将板坯除鳞 并在整理列车中滚动。 将不同于水的反应剂在除垢或除垢之前施加到板坯上。 反应剂的应用之前可以是常规的液压，机械或气动去除覆盖板坯的氧化皮层。

公开(公告)号：US6062055A

公开(公告)日：2000-05-16

申请号：US15323

申请日：1998-01-29

Applicant: Paolo Bobig ,  Bruno Di Giusto

Inventor： Paolo Bobig ,  Bruno Di Giusto

IPC: B21B45/00 ,  B21B1/00 ,  B21B1/24 ,  B21B1/26 ,  B21B1/32 ,  B21B1/46 ,  B21B15/00 ,  C21D8/02 ,  B21B27/06

CPC classification number: C21D8/0226 ,  B21B1/26 ,  B21B1/466 ,  B21B1/24 ,  B21B1/32 ,  B21B2013/003 ,  B21B2015/0057 ,  B21B2201/02 ,  B21B2201/04 ,  B21B2201/14

Abstract: Rolling method for thin flat products, used in the production of flat rolled products with a final thickness in the range of 0.6-1.5 mm or more, up to 2.0-3.0 mm, in a plant suitable to work thicknesses of up to 25.4 mm, the method being applied to slabs with a thickness of between 50 and 90 mm if arriving directly from the continuous casting machine or on slabs with a greater thickness, of between 80 and 200-250 mm, if fed from a furnace to accumulate and heat the slabs (22), the method comprising at least a first heat treatment, a roughing or pre-finishing pass, a temperature equalisation treatment and a finishing pass in a finishing train (19) comprising at least three reduction passes, the finishing pass being followed by a step of cooling and coiling the flat finished product, the product at the outlet of the roughing or pre-finishing pass being in the austenitic state .gamma., the finishing pass taking place in the rolling line (10) at least partly in the ferritic step or in the austenitic step, as desired. Rolling line adopting the method as above, wherein the finishing train (19) cooperates with a system (24) to condition and adjust the temperature of the slab.

Abstract translation: 在适用于工作厚度高达25.4mm的工厂中，用于生产最终厚度在0.6-1.5mm或更高，最高2.0-3.0mm的平轧产品的薄平板产品的滚压方法， 该方法适用于厚度在50至90mm之间的板坯，如果直接从连续铸造机或厚度在80至200-250mm之间的板坯上达到，如果从炉子进料来积聚和加热 板坯（22），该方法至少包括第一热处理，粗加工或预精加工通过，精轧机组（19）中的温度均衡处理和精加工过程，该精轧机组（19）包括至少三个还原道次 通过冷却和卷绕扁平成品的步骤，粗加工或预精加工通过的出口处的产品处于奥氏体状态γ，在轧制线（10）中至少部分地在铁素体中进行精加工 一步或在a ustenitic步骤，根据需要。 采用上述方法的轧制线，其中精轧机（19）与系统（24）配合以调节和调节板坯的温度。

公开(公告)号：US5964275A

公开(公告)日：1999-10-12

申请号：US951080

申请日：1997-10-15

Applicant: Andreas Flick ,  Gerlinde Djumlija

Inventor： Andreas Flick ,  Gerlinde Djumlija

IPC: B21B1/26 ,  B21B1/46 ,  B21B3/02 ,  B22D11/12 ,  B22D11/128

CPC classification number: B21B1/463 ,  B21B1/26 ,  B22D11/1206 ,  B21B2201/14 ,  B21B3/02 ,  Y10T29/49991 ,  Y10T29/5184

Abstract: There is disclosed an arrangement and for alternatively producing a hot-rolled strip, a hot-formed pre-strip or an unformed slab, of steel by the continuous casting method. In order to obtain a high product quality for strips as thin as possible and to ensure a high operational flexibility, the following characteristic features are realized individually or in combination:casting of a strand at slab thickness in an open-ended mold having a continuously constant cross section,a first forming step including forming of the strand having a liquid core to reduce its thickness,a second forming step including forming of the already completely solidified strand to further reduce its thickness to pre-strip format, anda third forming step including forming of strand pieces separated from the strand by hot-rolling the strand pieces.

Abstract translation: 公开了通过连续铸造法制造钢的热轧带材，热成型预条带或未成形板坯的布置。 为了获得尽可能薄的带材的高产品质量并且确保高的操作灵活性，可以单独或组合地实现以下特征：在具有连续常数的开口模具中铸造具有板坯厚度的钢绞线 横截面，第一成形步骤包括形成具有液芯的股线以减小其厚度;第二成形步骤，包括形成已经完全固化的股线，以进一步将其厚度减小到预剥带形式;以及第三成形步骤，包括 通过热轧所述绞合片形成与所述线分离的线束片。