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    System and method for preventing scale defects during hot rolling
    1.
    发明授权
    System and method for preventing scale defects during hot rolling 失效
    在热轧过程中防止氧化皮缺陷的系统和方法

    公开(公告)号：US06257034B1

    公开(公告)日：2001-07-10

    申请号：US09501789

    申请日：2000-02-11

    申请人： Junso Fukumori ,  Tsutomu Kawamizu ,  Akira Kaya ,  Jong Won Lee ,  Kyung Zoon Min ,  Woon Yong Choi

    发明人： Junso Fukumori ,  Tsutomu Kawamizu ,  Akira Kaya ,  Jong Won Lee ,  Kyung Zoon Min ,  Woon Yong Choi

    IPC分类号： B21B4504

    CPC分类号： B21B45/0218 ,  B21B1/26 ,  B21B45/08

    摘要： A system and a method are disclosed for preventing scale defects during hot rolling by hot rolling equipment having a scale breaker provided at an entry side of a finishing mill line composed of a plurality of rolling mills arranged in tandem. A descaler is provided between a first stage rolling mill and a second stage rolling mill of the finishing mill line. A cooler for cooling a hot rolled steel plate is provided between the second stage rolling mill and a third stage rolling mill of the finishing mill line. A control device is provided for controlling the descaler and the cooler to be selectively driven such that neither of the descaler and the cooler is actuated, one of the descaler and the cooler is actuated, or both of the descaler and the cooler are actuated, according to rolling conditions. Thus, the hot rolled steel plate is rolled, with its oxide film thickness at an entry side of the third stage rolling mill being restricted to not more than a limiting oxide film thickness of 5 &mgr;m. Consequently, scale defects are prevented, and overcooling of the hot rolled steel plate is suppressed, to improve the quality of a product.

    摘要翻译： 公开了一种系统和方法，用于防止在具有设置在由串联排列的多个轧机组成的精轧机生产线的入口侧的标尺破碎机的热轧设备的热轧设备中的结垢缺陷。 在精轧机生产线的第一级轧机和第二级轧机之间设置除鳞机。 在第二级轧机和精轧机生产线的第三级轧机之间设置用于冷却热轧钢板的冷却器。 提供一种控制装置，用于控制除垢器和冷却器被选择性地驱动，使得除垢器和冷却器都不被致动，除垢器和冷却器中的一个被致动，或者除垢器和冷却器都被致动，根据 滚动条件。 因此，轧制热轧钢板，将其在第三级轧机入口侧的氧化膜厚度限制在5μm以下的极限氧化膜厚度以下。 因此，防止了氧化皮缺陷，并且抑制了热轧钢板的过冷，从而提高了产品的质量。