PRODUCTION METHOD OF HOT ROLLED STEEL SHEET

    公开(公告)号:EP2298462B2

    公开(公告)日:2018-10-17

    申请号:EP09746702.1

    申请日:2009-05-13

    IPC分类号: B21B45/08

    CPC分类号: B21B45/08 B21B3/02

    摘要: The present invention is a method of descaling a steel material which removes scale formed at the time of hot rolling a steel material by spraying jets of high pressure water from a plurality of nozzles on to the surface of the steel material, the method of descaling a steel material comprising giving pulsation of a frequency of 3.0 kHz to 200 kHz by direct vibration by a vibrator or vibration due to resonance to the high pressure water and setting a distance from each nozzle to the steel slab at 50 to 700 mm in range. Due to this, there is provided a method of producing a hot rolled steel material of a sufficiently good quality removing scale from a difficult-to-descale steel slab such as high Si steel without requiring high pressure water of an extremely high discharge pressure and while easing temperature restrictions on the heating furnace.

    METHOD OF TREATING ROLLED STEEL ARTICLE

    公开(公告)号:EP2576868B1

    公开(公告)日:2018-07-11

    申请号:EP11785958.7

    申请日:2011-05-20

    摘要: A method of treating a rolled steel article, the method comprising: providing a first solution comprising an acid arranged to separate mill scale components from steel and a surfactant arranged to suspend separated mill scale components in the first solution; applying the first solution to a surface of the article for a prescribed duration; rinsing the first solution from the surface of the article by applying a rinse liquid to the article; directing a first flow of air onto the surface of the article to remove moisture from the surface of rolled steel article; and directing a second flow of air onto the surface of the article subsequent to application of the second solution until remaining moisture on the article is substantially removed.

    THICK STEEL PLATE MANUFACTURING FACILITY AND MANUFACTURING METHOD
    8.
    发明公开
    THICK STEEL PLATE MANUFACTURING FACILITY AND MANUFACTURING METHOD 审中-公开
    厚钢板制造设备及制造方法

    公开(公告)号:EP3195946A1

    公开(公告)日:2017-07-26

    申请号:EP15836765.6

    申请日:2015-08-14

    IPC分类号: B21B45/08 B21B1/38 B21B45/02

    摘要: It is an object to provide a facility and a method for manufacturing a steel plate having excellent shapes and excellent mechanical properties, by performing uniform cooling in a cooling step by uniformizing scales that are generated on surfaces of the steel plate in a descaling step.
    A facility for manufacturing a steel plate includes a hot rolling apparatus, a shape correcting apparatus, a descaling apparatus, and an accelerated cooling apparatus which are set in this order from an upstream side in a conveyance direction, wherein jetting nozzles of the descaling apparatus are set in two rows with respect to a longitudinal direction of a steel plate, and wherein energy density E of descaling water that is jetted towards a surface of the steel plate from the two rows of jetting nozzles is greater than or equal to 0.08 J/mm 2 in total.

    摘要翻译: 本发明的目的在于提供一种通过在除锈步骤中使在钢板的表面上产生的氧化皮均匀化而在冷却步骤中进行均匀冷却而制造具有优异形状和优异机械性能的钢板的设备和方法。 用于制造钢板的设备包括从输送方向的上游侧依次设置的热轧设备,形状修正设备,去氧化皮设备和加速冷却设备,其中去氧化皮设备的喷嘴是 相对于钢板的长度方向设置成两列,从两列喷嘴向钢板表面喷射的去氧​​化皮水的能量密度E为0.08J / mm2以上 总共。

    VERFAHREN UND VORRICHTUNG ZUM ENTZUNDERN EINER METALLISCHEN OBERFLÄCHE SOWIE ANLAGE ZUM HERSTELLEN VON METALLISCHEN HALBZEUGEN
    10.
    发明公开
    VERFAHREN UND VORRICHTUNG ZUM ENTZUNDERN EINER METALLISCHEN OBERFLÄCHE SOWIE ANLAGE ZUM HERSTELLEN VON METALLISCHEN HALBZEUGEN 有权
    方法和设备除垢一个金属表面系统,用于金属半成品的生产

    公开(公告)号:EP3074151A1

    公开(公告)日:2016-10-05

    申请号:EP14805888.6

    申请日:2014-11-28

    申请人: SMS group GmbH

    发明人: CRAMER, Markus

    IPC分类号: B21B45/08

    CPC分类号: B21B45/08 B21B45/06

    摘要: The invention relates to a method for descaling a metallic surface (2, 3) of a semifinished metallic product (4, 9), in which the semifinished metallic product (4, 9) is moved in a transporting direction (13) past nozzle head parts (18) that are arranged next to one another transversely in relation to this transporting direction (13) and rotate, and in which nozzle elements (22, 23, 24, 25) arranged on these rotating nozzle head parts (18) are used to produce on the metallic surface (2, 3) directed high-pressure fluid jets, which before hitting the metallic surface (2, 3) may touch or overlap at a constriction (30) between two directly neighbouring nozzle head parts (18), wherein the nozzle head parts (18) rotate synchronously in relation to one another with an angular position (31, 32) that is preset in such a way that the fluid jets produced by means of the nozzle elements (22, 23, 24, 25) are always directed past one another onto the metallic surface (2, 3) without coming into contact with one another.

    摘要翻译: 一种用于除垢金属半成品的金属表面上,包括如下步骤:在一个方向上传送过去喷嘴头部件引导所述半成品金属产品做绕旋转轴和被布置彼此并排横向于方向传送; 并引导由布置在在金属表面上的旋转喷嘴头部分的喷嘴元件产生高压流体射流。 流体射流所以被以窄点尽可能的金属表面喷砂两个直接相邻的喷嘴头部分之间。 喷嘴头部分同步地彼此旋转以相对于喷嘴头部分的特定旋转轴的旋转角度的预定角度位置。 由喷嘴元件产生的流体射流总是喷砂在金属表面上经过彼此不进入彼此接触。