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31 条记录 (耗时 0.008 秒)

    A control system and method for compensation for speed effect in a tandem cold mill
    2.
    发明公开
    A control system and method for compensation for speed effect in a tandem cold mill 失效
    Regelverfahren und -einrichtung zur Kompensation von Geschwindigkeitseffekten在einem Tandemkaltwalzwerk。

    公开(公告)号：EP0430046A2

    公开(公告)日：1991-06-05

    申请号：EP90122223.2

    申请日：1990-11-20

    申请人： AEG WESTINGHOUSE INDUSTRIAL AUTOMATION CORPORATION

    发明人： Peterson, Robert S. ,  Larsen, John A.

    IPC分类号： B21B37/06

    CPC分类号： B21B37/52 ,  B21B2265/12 ,  B21B2273/08 ,  B21B2273/10

    摘要： In an arrangement for a tandem cold mill in order to compensate for "speed effect," each stand has a roll force memory unit (41) and an oil film roll force controller unit (74) which operate together, and in conjunction with a tensiometer (28), to maintain a relatively constant roll gap during the acceleration and deceleration phases of the mill. In threading, in tailing out, and in a full run speed of the mill, the roll force memory unit (41) is constantly operating to obtain a "lock on" roll force reference for the stand prior to the acceleration or deceleration phase. A roll force error signal, which is the difference between a roll force reference of the roll force memory unit (41) and an instantaneous roll force, enters the oil film roll controller (74). A proportional integrator type controller in the oil film roll force controller unit (74) changes the roll force error signal within a limit of + 25% of the desired tension. This oil film roll controller (74) produces a tension reference signal which is compared to the desired tension and selectively with the actual tension to produce a tension error signal used to control the roll gap control system of the stand or used to provide a speed change reference for the downstream stand.

    摘要翻译： 在为了补偿“速度效应”的串联式冷轧机的布置中，每个支架具有一个辊力存储单元和一个油膜辊力控制器单元，它们一起操作并与张力计一起保持相对恒定 在轧机加速和减速阶段的轧辊间隙。 在加工或减速阶段之前，在螺纹加工，拖曳和全速运转的轧机中，辊力存储单元不断地操作以获得用于支架的“锁定”辊力参考。 作为辊力存储单元的辊力基准与瞬时辊力之差的辊力误差信号进入油膜卷控制器。 油膜辊力控制器单元中的比例积分器型控制器将辊力误差信号改变在所需张力的+ 25％的极限内。 该油膜辊控制器产生张力参考信号，该信号与期望的张力进行比较，并选择性地与实际张力相比产生用于控制支架的辊隙控制系统的张力误差信号，或用于为 下游站

    The operation of a multi-stand hot rolling mill
    5.
    发明公开
    The operation of a multi-stand hot rolling mill 失效
    操作多机架热轧机。

    公开(公告)号：EP0024849A1

    公开(公告)日：1981-03-11

    申请号：EP80302771.3

    申请日：1980-08-12

    申请人： DAVY McKEE (SHEFFIELD) LIMITED

    发明人： Hope, Thomas ,  Hewitt, Ewan Christian

    IPC分类号： B21B37/10

    CPC分类号： B21B37/74 ,  B21B1/26 ,  B21B37/44 ,  B21B45/0233 ,  B21B45/08 ,  B21B2267/19 ,  B21B2273/08

    摘要： A multi-stand rolling mill is operated so that strip (S) of suitable shape and metallurgical properties is produced at a faster speed than possible heretofore by threading the mill at a relatively slow speed and adjusting the rolling loads on the stands to givethe required output gauge and rolling temperature at the last stand, thereafter the mill is accelerated and curtains of liquid coolant (19) are applied to the workpiece (S) at one or more interstand locations to ensure that the rolling loads remain substantially the same as when threading and the rolling temperature of the last stand remains substantially constant.