Method and apparatus for the manufacture of formable steel strip
    72.
    发明授权
    Method and apparatus for the manufacture of formable steel strip 失效
    用于制造可成形钢带的方法和装置

    公开(公告)号:US5009396A

    公开(公告)日:1991-04-23

    申请号:US414024

    申请日:1989-09-28

    CPC classification number: C21D8/0431 B21B1/463 B21B13/20 B21B2201/04

    Abstract: In the manufacture of formable steel strip having a thickness between 0.5 and 1.5 mm, the following process steps are performed sequentially in a continuous process:(a) in a continuous casting machine forming liquid steel into a hot slab having a thickness of less than 100 mm,(b) hot rolling the hot slab from step (a), in the austenitic region and below 1100.degree. C., to form strip having a thickness of between 2 and 5 mm,(c) cooling the strip from step (b) to a temperature between 300.degree. C. and the temperature T.sub.t at which 75% of the steel is converted to ferrite,(d) rolling the cooled strip from step (c) at said temperature between 300.degree. C. and T.sub.t with a thickness reduction of at least 25% at a rolling speed not more than 1000 m/min.,(e) coiling the rolled strip from step (d).

    RECHNERGESTÜTZTES MODELLIERVERFAHREN FÜR DAS VERHALTEN EINES STAHLVOLUMENS MIT EINER VOLUMENOBERFLÄCHE
    75.
    发明申请
    RECHNERGESTÜTZTES MODELLIERVERFAHREN FÜR DAS VERHALTEN EINES STAHLVOLUMENS MIT EINER VOLUMENOBERFLÄCHE 审中-公开
    计算机辅助建模FOR A用钢量与体积表面行为

    公开(公告)号:WO2005076092A1

    公开(公告)日:2005-08-18

    申请号:PCT/EP2004/053709

    申请日:2004-12-27

    CPC classification number: G05B17/02 B21B37/74 B21B2201/04 C21D11/005

    Abstract: Ein Rechner (4) ermittelt anhand eines momentanen Anfangszu­stands (ZA) eines Stahlvolumens (1) und mindestens einer über die Volumenoberfläche auf das Stahlvolumen (1) einwirkenden momentanen Einflussgrösse (W) durch Lösen einer Wärmeleitungs­und einer Phasenumwandlungsgleichung einen Folgezustand (ZF) des Stahlvolumens (1). Die Zustände (ZA, ZF) umfassen für mindestens ein Volumenelement (9) des Stahlvolumens (1) eine lokale Konzentrationsverteilung (K) eines im Stahl bewegli­chen Legierungselements, lokale Anteile (p1, p2, p3) von mo­dellierten Phasen des Stahls und eine den lokalen Energiein­halt des Stahls beschreibende Grösse (H). Die Phasen umfassen Austenit und eine weitere Phase, in der Regel Ferrit oder Ze­mentit. Im Rahmen der Umwandlungsgleichung wird ermittelt, welche Konzentrationen (k1, k3; k2, k4) des beweglichen Le­gierungselements beidseits einer Phasengrenze (11, 12) zwi­schen Austenit und der weiteren Phase vorliegen. Ferner wird durch Lösen eines Stefan-Problems ermittelt, ob und wie sich die Konzentrationsverteilung (K) des beweglichen Legierungs­elements im austenitischen Bereich des betrachteten Volumen­elements (9) ändert und ob und um welches Ausmass (δx', δx") sich die Phasengrenze (11, 12) dadurch verschiebt. Anhand der Lage der Phasengrenze (11, 12) werden dann die lokalen An­teile (p1, p2, p3) der Phasen ermittelt.

    Abstract translation: 一种计算机(4)确定的瞬时初始状态的钢体积(1)和至少一个所述钢体积(1)通过将一个Wärmeleitungsund的相变式作用瞬时影响量(W)上的卷表面上的(ZA)的基础上,随后状态的钢体积的(ZF)( 1)。 状态(ZA,IF)包括用于至少一个体积元件(9)的钢体积的(1)钢中的合金构件,局部比例钢和本地的建模阶段(P1,P2,P3)的可移动的局部浓度分布(K) 钢描述尺寸(H)的能量含量。 将各相包括奥氏体和另一相,通常的铁素体或渗碳体。 作为转换方程的部分被确定,其浓度;在可动元件的合金上的相边界(11,12)的两侧(K1,K2 K3,K4)是奥氏体和另一相之间。 此外,可以通过溶解的Stefan问题确定是否以及如何在所观察到的体积元素的奥氏体区域中的移动合金元素的浓度分布(K)(9)的变化,以及是否和在何种程度上(DELTAX”,DELTAX“),相界(11 ,12),从而将基于相界(11,12的位置),然后确定相的本地比例(P1,P2,P3)。

    PROCESS AND DEVICE FOR PRODUCING A FERRITICALLY ROLLED STEEL STRIP
    76.
    发明申请
    PROCESS AND DEVICE FOR PRODUCING A FERRITICALLY ROLLED STEEL STRIP 审中-公开
    用于生产复杂的钢带的方法和装置

    公开(公告)号:WO99029446A1

    公开(公告)日:1999-06-17

    申请号:PCT/NL1998/000699

    申请日:1998-12-08

    CPC classification number: B21B1/466 B21B1/26 B21B2201/04

    Abstract: Process for producing a ferritically rolled steel strip, in which liquid steel is cast in a continuous-casting machine (1) to form a slab and, utilizing the casting heat, is conveyed through a furnace device (7) undergoes preliminary rolling in a preliminary rolling device (10) and, in a final rolling device (14), is finishing-rolled to form the ferritic steel strip with a desired final thickness, in which process, in a completely continuous, an endless or a semi-endless process, the slab is rolled in the austenitic range in the preliminary rolling device (10) and, after rolling in the austenitic range, is cooled to a temperature at which the steel has a substantially ferritic structure, and the strip is rolled, in the final rolling device, at speeds which substantially correspond to the speed at which it enters the final rolling device (14) and the following thickness reduction stages, and in at least one stand of the final rolling device (14), the strip is ferritically rolled at a temperature of between 850 DEG C and 600 DEG C, and, after leaving the final rolling device (14), is cooled rapidly to a temperature below 500 DEG C in order substantially to avoid recrystallization.

    Abstract translation: 制造铁素体钢带的方法,其中在连续铸造机(1)中铸造液态钢以形成板坯,并且利用铸造热量输送通过炉装置(7)进行初步轧制 轧制装置(10),并且在最终轧制装置(14)中进行精轧,以形成具有所需最终厚度的铁素体钢带,其中以完全连续的无限或半无限制工艺, 在预轧装置(10)的奥氏体区域中轧制板坯,在奥氏体区域中轧制后,在最终轧制中将钢冷却至钢基本上为铁素体结构的温度,轧制 装置,其速度基本上对应于进入最终轧制装置(14)的速度和随后的厚度减小阶段,并且在最终轧制装置(14)的至少一个支架中,钢带在 TE 温度在850℃至600℃之间,并且在离开最终轧制装置(14)之后,迅速冷却到低于500℃的温度,以便基本上避免重结晶。

    PROCESS AND PLANT FOR OBTAINING STEEL STRIP COILS HAVING COLD-ROLLED CHARACTERISTICS AND DIRECTLY OBTAINED IN A HOT-ROLLING LINE
    77.
    发明申请
    PROCESS AND PLANT FOR OBTAINING STEEL STRIP COILS HAVING COLD-ROLLED CHARACTERISTICS AND DIRECTLY OBTAINED IN A HOT-ROLLING LINE 审中-公开
    用于获取具有冷轧特性并直接在热轧带钢中获得的钢带卷材的工艺和设备

    公开(公告)号:WO1992000815A1

    公开(公告)日:1992-01-23

    申请号:PCT/IT1991000057

    申请日:1991-07-05

    Abstract: A process for obtaining steel strip coils with characteristics of a cold-rolled product, directly in a hot-rolling line, comprises subsequently to steps of casting and thickness reduction at a temperature of more than 1100 DEG C upon solidification, induction heating of the product and a further step of hot rolling, above point Ar3, a step of cooling and temperature control in a range of between 600 and 250 DEG C, thus lower than said point Ar3, as well as one or more passes of cold-rolling in series, with final coiling of the obtained product. Also a preferred plant is described for putting into practice such a process.

    Abstract translation: 直接在热轧生产线中获得具有冷轧产品特性的钢带卷材的方法,随后在固化后在1100℃以上的温度下进行铸造和厚度还原的步骤,产品的感应加热 以及在点Ar3以上的热轧的另一步骤是在600-250℃的范围内冷却和温度控制的步骤,因此低于所述点Ar3,以及串联的一个或多个冷轧次数 最终卷取得到的产品。 还描述了一种优选的设备来实施这样一个过程。

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