Process for producing a microkilled steel suitable for freerun
continuous casting for subsequent cold forming
    1.
    发明授权
    Process for producing a microkilled steel suitable for freerun continuous casting for subsequent cold forming 失效
    用于生产适用于随后冷成型的自由连续铸造的微型钢的方法

    公开(公告)号:US4525211A

    公开(公告)日:1985-06-25

    申请号:US620921

    申请日:1984-06-15

    IPC分类号: C22C38/00

    CPC分类号: C22C38/00

    摘要: In order to produce a microkilled steel suitable for free-run continuous casting for subsequent cold forming standardizing of the C - content to .ltoreq.0.05%, preferably .ltoreq.0.03%, Si - content to .ltoreq.0.05%, preferably 0.02-0.04%, and Al - content to .ltoreq.0.006% is proposed. For the equivalent carbon content a value .ltoreq.0.14%, preferably 0.10-0.12% is standardized using the correlationC.sub.eq =%C+1/7%Si+1/5%Mn+1/7%Cr+1/20%Ni+1/9%Cu+1/2% Mo+1/2% Vfor determining the equivalent carbon content. Preferably, the steel is refined in a bottom blowing or bottom rinsing converter and after standardizing the Si - content and/or Mn - content, oxygen activity a.sub.[o] is measured and standardized to 60-150 ppm by adding a corresponding amount of an additional deoxidant, particularly aluminum.

    摘要翻译: 为了生产适用于自由连续铸造的微型钢,用于随后的冷成型将C含量标准化至

    Process for heating steel melts and an apparatus for carrying out the
process
    4.
    发明授权
    Process for heating steel melts and an apparatus for carrying out the process 失效
    加热钢熔体的方法和进行该方法的装置

    公开(公告)号:US4950325A

    公开(公告)日:1990-08-21

    申请号:US390243

    申请日:1989-08-07

    IPC分类号: C21C5/56 C21C7/00

    摘要: An apparatus for heating steel melts covered with a slag rich in iron oxide, and employed in particular for continuous steel making processes such as the KVA process, incorporates a height-adjustable injection lance for supplying metals which react exothermally with the melt and with the oxygen in the slag. The nozzle of the injection lance is adjustably arranged above the contents of the ladle so that it can be maintained in the zone of the melt/slag phase boundary.

    摘要翻译: 用于加热富含氧化铁的炉渣的钢熔体的装置,特别用于连续炼钢工艺如KVA工艺的装置包括高度可调的注射枪,用于供应与熔体和氧气放热反应的金属 在炉渣中。 注射枪的喷嘴可调节地布置在钢包内部的上方,使得其可以保持在熔体/渣相边界的区域中。

    Process for heating steel melts as well as device for performing this
process
    5.
    发明授权
    Process for heating steel melts as well as device for performing this process 失效
    钢熔体加热过程以及执行此过程的设备

    公开(公告)号:US4941913A

    公开(公告)日:1990-07-17

    申请号:US377095

    申请日:1989-07-10

    摘要: In a process for heating within a ladle (5) steel melts (10) being covered with a slag (8) rich in iron oxides, in particular for continuous steel production processes such as, for example, the KVA-process, thereby using metallothermal heat, there is (are) during filling the ladle (5), insufflated by an inert gas via nozzles (14) provided in the bottom (12) of the receiving ladle (5) for the mixture of bath and slag a metal, such as, for example, Al, Si, their mixtures or alloys, in particular FeSi, exothermically reacting with the oxygen of the bath and with the oxygen of the slag as well as, optionally, pulverulent slag formers, such as, for example, CaO, Al.sub.2 O.sub.3, MgO and/or SiO.sub.2.

    摘要翻译: 在钢包熔融物(10)中的加热过程中,钢熔体(10)被富含铁氧化物的炉渣(8)覆盖,特别是用于连续钢生产过程,例如KVA工艺,由此使用金属热 热量,在填充钢包(5)期间(是),通过设置在接收钢包(5)的底部(12)中的喷嘴(14)由惰性气体吹入,用于将浴和炉渣混合在一起的金属,例如 例如,Al,Si,它们的混合物或合金,特别是FeSi,与熔池的氧气和炉渣的氧气放热反应,以及任选的粉状成渣剂,例如CaO ,Al 2 O 3,MgO和/或SiO 2。

    Process for continuously melting scrap
    6.
    发明授权
    Process for continuously melting scrap 失效
    连续熔炼废料的工艺

    公开(公告)号:US4895594A

    公开(公告)日:1990-01-23

    申请号:US278543

    申请日:1988-12-01

    CPC分类号: C21C5/567 C21C5/28 Y02P10/212

    摘要: In a process for continuously melting scrap (6) and/or pig iron within a converter (1), the converter (1) is heated in proximity of the bottom (3) with sub-stoichiometric burners (4), having their flames (5) essentially radially directed into the interior of the converter (1). In this case, secondary air or O.sub.2 is supplied at a distance above the burner plane for the purpose of completing the combustion. The melt is, optionally together with slag, discharged via a tapping means (9) laterally connected to the converter (1) into a mobile ladle (19). For the purpose of interchanging ladles (19), the converter (1) is swivelled into a position in which the level of the melt is located below the taphole (11).

    摘要翻译: 在用于在转炉(1)内连续熔炼废料(6)和/或生铁的过程中,转炉(1)在底部(3)附近被亚化学计量燃烧器(4)加热, 5)基本上径向地引导到转换器(1)的内部。 在这种情况下,为了完成燃烧的目的,在燃烧器平面上方的距离处供应二次空气或O 2。 熔体可选地与炉渣一起通过横向连接到转炉(1)的攻丝装置(9)排放到移动钢包(19)中。 为了交换水桶(19)的目的,转炉(1)旋转到熔体水平位于出气孔(11)下方的位置。

    Arrangement provided at a continuous casting plant
    7.
    发明授权
    Arrangement provided at a continuous casting plant 失效
    在连铸厂提供的安排

    公开(公告)号:US4691757A

    公开(公告)日:1987-09-08

    申请号:US901995

    申请日:1986-08-28

    IPC分类号: B22D11/04 B22D11/053

    CPC分类号: B22D11/053

    摘要: To increase the effective acoustic capacity and to enable the mold side walls to be conventionally designed, a continuous casting plant comprising a stationary supporting structure and a continuous casting mold supported on the structure has its ultrasonic transducers fastened at one end to the stationary supporting structure and at the other end to the continuous casting mold.

    摘要翻译: 为了增加有效的声学能力并且使得模具侧壁能够被传统地设计,包括固定支撑结构和支撑在结构上的连续铸模的连续铸造设备的一端具有超声波换能器固定在固定支撑结构上, 在另一端连续铸造模具。

    Stirring provision for a continuous casting plant
    8.
    发明授权
    Stirring provision for a continuous casting plant 失效
    搅拌连续铸造设备

    公开(公告)号:US4909306A

    公开(公告)日:1990-03-20

    申请号:US662719

    申请日:1984-10-19

    CPC分类号: B22D11/122

    摘要: At least two magnetic induction elements operated with alternating current are disposed successively in the longitudinal direction at the guide for a strand of a continuous casting plant, and in particular for a continuous steel casting plant, to provide a stirring mechanism. Each induction element is connected to its own phase (R, S, T, N) of the at least two phase alternating current and the phases (R, S, T, N) are shifted with respect to each other by a phase angle of from about 0 to 180 degrees. In order to avoid the formation of a continously uniformly directed circulating current of metal despite a simple and sturdy stirring provision and without the presence of additional switching circuits, the phases (R,S,T) generate in each case electromagnetic forces under formation of a magnetic alternating field at at least two neighboring induction elements, where the momentary value differences and the directional differences correspond to a phase shift of .PHI.+180 degrees.

    摘要翻译: 至少两个用交流电流操作的磁感应元件在连续铸造设备的线材的引导件上沿纵向连续地设置,特别是连续的铸钢设备,以提供搅拌机构。 每个感应元件连接到其至少两相交流电的自身相位(R,S,T,N),并且相位(R,S,T,N)相对于彼此移位相位角 从0到180度。 为了避免形成连续均匀导向的金属循环电流,尽管简单和坚固的搅拌提供,并且不存在额外的开关电路,相(R,S,T)在每种情况下都产生电磁力,形成 在至少两个相邻感应元件处的磁交变场,其中瞬时值差和方向差对应于PHI +180度的相移。

    Method of establishing a turbulent motion of molten steel within a
strand guide
    10.
    发明授权
    Method of establishing a turbulent motion of molten steel within a strand guide 失效
    在钢丝绳引导件内建立钢水湍流运动的方法

    公开(公告)号:US4699205A

    公开(公告)日:1987-10-13

    申请号:US918687

    申请日:1986-10-14

    CPC分类号: B22D11/122

    摘要: A method of establishing a turbulent motion of molten steel within a strand guide of a continuous casting plant for casting a steel strand, wherein at least one group of three electromagnetic induction coils are arranged adjacent the strand guide, two of the induction elements being arranged consecutively in the longitudinal direction of the guide. At least two of the induction elements are offset relative to each other, transverse to the longitudinal direction of the strand guide, and the three induction elements form the corner points of an imaginary triangle having no more than one side lying in a plane extending parallel or perpendicular to the longitudinal direction of the strand guide. The imaginary triangle extends across the width of the strand. One phase of a three phase AC current is connected to each electromagnetic induction element. One of the induction elements has its input terminals electrically reversed with respect to the other two elements. When power is applied to the induction elements, a discontinuous electromagnetic AC field is established within the imaginary triangle extending across the width of the strand, wherein the electromotive forces produced by the induction elements produce travelling waves in several directions to cause a turbulent motion and an effective mingling of the melt within the strand over the total width of its liquid core.

    摘要翻译: 一种在用于铸造钢绞线的连续铸造设备的线材引导件内建立钢水的湍流运动的方法,其中至少一组三个电磁感应线圈布置在线束引导件附近,其中两个感应元件连续布置 在导向件的纵向上。 感应元件中的至少两个相对于彼此偏移,横向于线引导件的纵向方向,并且三个感应元件形成假想三角形的角点,其中不超过一个侧面位于平行延伸的平面或 垂直于股线引导件的纵向方向。 假想三角形延伸穿过股线的宽度。 三相交流电流的一相连接到每个电磁感应元件。 其中一个感应元件的输入端子相对于其他两个元件电气反向。 当对感应元件施加电力时,在跨越绞线的宽度延伸的虚拟三角形内建立不连续的电磁AC场,其中由感应元件产生的电动势在几个方向产生行波以引起湍流运动和 在其芯液的总宽度内将熔体内的熔体有效地混合。