Method for rolling steel sheet and method for manufacturing steel sheet

    公开(公告)号:US12090533B2

    公开(公告)日:2024-09-17

    申请号:US17425467

    申请日:2019-12-26

    Abstract: Provided is a method for rolling a steel sheet and a method for manufacturing a steel sheet capable of preventing occurrence of defects in appearance of a steel sheet caused by oil spots of a coolant and preventing occurrence of defects in shape of a steel sheet by appropriately controlling thermal deformation of work rolls. The method for rolling a steel sheet according to the present invention is a method for rolling a steel sheet involving feeding of a coolant to rolls that form a rolling mill during the rolling. The method includes keeping a coolant feeding rate at or lower than a predetermined rate lower than an upper constant rate at a start of operation of the rolling mill, and increasing the coolant feeding rate to the upper constant rate in response to an amount of center buckles of the steel sheet reaching or exceeding an upper target value.

    Device for cooling rolls
    4.
    发明授权

    公开(公告)号:US09901964B2

    公开(公告)日:2018-02-27

    申请号:US14400491

    申请日:2013-05-08

    Abstract: A device for cooling a roll for rolling materials, including a cooling shell opposite a sub-region of the roll surface circumference, for forming a cooling gap, through which a cooling fluid can flow, between the sub-region and the cooling shell. The device further includes a first lever which can be pivoted about a suspension point, which can be pivoted toward the roll surface, and which is rotatably connected to a first end region of the cooling shell, when viewed in the circumferential direction of the roll, and a second lever which can be pivoted about another suspension point, which can be pivoted toward the roll surface, and which is rotatably connected to the second end region of the cooling shell, when viewed in the circumferential direction of the roll, such that the cooling gap can be selectively reduced or increased by pivoting the levers.

    Device for cooling rolls
    6.
    发明授权

    公开(公告)号:US09610622B2

    公开(公告)日:2017-04-04

    申请号:US14398852

    申请日:2013-05-08

    Applicant: SMS Siemag AG

    Abstract: The application is directed to a device (1, 1′) for cooling a roll (2), in particular a working roll (2) for rolling rolling stock (3), wherein the device comprises a cooling shell (50, 60) which lies opposite at least one part region of the circumference of the roll surface for forming a cooling gap (5) between the part region of the roll surface and the cooling shell (50, 60), through which cooling gap (5) cooling fluid can flow, and a lever (40, 44) which can be pivoted about a suspension point (8, 48), can be pivoted in the direction of the roll surface and is connected rotatably to a first half (51, 61) of the cooling shell (50, 60) as viewed in the circumferential direction (U) of the roll (2), wherein the cooling gap (5) can optionally be reduced in size or enlarged by pivoting of the lever (40, 44). Furthermore, the device according to the invention comprises a variable-length linear guide (0, 99) which can be pivoted about a further suspension point (88, 48) and is connected rotatably to the second half (59, 69) of the cooling shell (50, 60) as viewed in the circumferential direction (U) of the roll (2).

    METHOD AND APPARATUS TO ISOLATE THE COLD IN CRYOGENIC EQUIPMENT
    8.
    发明申请
    METHOD AND APPARATUS TO ISOLATE THE COLD IN CRYOGENIC EQUIPMENT 审中-公开
    分离冷冻设备中的冷藏方法和装置

    公开(公告)号:US20160303626A1

    公开(公告)日:2016-10-20

    申请号:US15101484

    申请日:2014-11-27

    Abstract: An apparatus and a method are provided for spraying a cryogenic fluid (2) to a work piece (1) which includes a cryogen feed line (3), at least one delivery nozzle (4) for delivering the cryogenic fluid (2), a shroud (6) which surrounds at least part of said delivery nozzle (4) and which has a front face with an opening which is directed to the workpiece. The shroud (6) and the work piece (1) are movable relative to each other between a working configuration and a maintenance configuration, In the maintenance configuration the shroud (6) comprises a barrier which prevents or minimizes ambient air from entering the shroud (6).

    Abstract translation: 提供了一种用于将低温流体(2)喷射到工件(1)上的装置和方法,所述工件(1)包括冷冻剂供给管线(3),用于输送低温流体(2)的至少一个输送喷嘴(4) 护罩(6),其围绕所述输送喷嘴(4)的至少一部分并且具有前表面,所述前表面具有被引导到工件的开口。 护罩(6)和工件(1)可在工作构型和维护构型之间相对于彼此移动。在维护构造中,护罩(6)包括防止或最小化环境空气进入护罩的障碍物 6)。

    Manufacturing methods and apparatus for targeted cooling in hot metal rolling
    10.
    发明授权
    Manufacturing methods and apparatus for targeted cooling in hot metal rolling 有权
    热轧轧制目标冷却的制造方法和装置

    公开(公告)号:US09180506B2

    公开(公告)日:2015-11-10

    申请号:US14201303

    申请日:2014-03-07

    Applicant: Novelis Inc.

    Abstract: A rolling mill apparatus and methods of hot rolling with targeted cooling. In one aspect, a mill having multiple roller stacks includes a cooling system that directs the bulk coolant flow to a heat exchanger having first and second heat exchangers in parallel. The first heat exchanger is adapted to cool the heated coolant to a first temperature for use in a first coolant stream discharged through a first set of nozzles during rolling, while the second heat exchanger is adapted to cool heated coolant to a lower temperature for use in a second coolant stream at a second temperature lower than the first for discharge through a second set of nozzles downstream to facilitate rolling or coiling of the rolled metal.

    Abstract translation: 一种轧制设备和具有目标冷却的热轧方法。 在一个方面,具有多个辊子堆的磨机包括冷却系统,其将大量冷却剂流引导到具有并联的第一和第二热交换器的热交换器。 第一热交换器适于将加热的冷却剂冷却至第一温度,以用于在轧制期间通过第一组喷嘴排出的第一冷却剂流,而第二热交换器适于将加热的冷却剂冷却至较低温度,以用于 在比第一温度低的第二温度下的第二冷却剂流,通过下游的第二组喷嘴排出,以便轧制或卷绕轧制的金属。

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