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1. 发明申请

WO1993004803A1 METHOD OF AND DEVICE FOR CONTROLLING LEVEL OF MOLTEN METAL IN CONTINUOUS CASTING 审中-公开
标题翻译：用于控制连续铸造中金属含量的方法和装置
公开(公告)号：WO1993004803A1
公开(公告)日：1993-03-18
申请号：PCT/JP1991001210
申请日：1991-09-12
申请人： KAWASAKI STEEL CORPORATION , ASANO, Kazuya , KAJI, Takayuki , ARAI, Kazuo , TANAKA, Shuji , IBARAKI, Michio , NABESHIMA, Yuki , YAMANAKA, Hiromitsu , TAKASHI, Masaki , MORIWAKI, Saburo , SUGIZAWA, Mototatsu , NOMURA, Hiroshi , ONISHI, Masayuki
发明人： KAWASAKI STEEL CORPORATION
IPC分类号： B22D11/18
CPC分类号： B22D11/18
摘要： In the case of continuous casting of a metallic piece by the use of the continuous casting apparatus provided with a stopper (28) for controlling a quantity of molten metal flowing into the mold, fluctuation qw in flow quantity of molten metal, which flows into and out from the mold (18), caused by external disturbance is estimated from at least preceding two values among a measured value L of the level of molten metal in the mold (18), a measured value x or command value Pr of the position of said stopper (28), and a measured value V of casting speed. Estimation of flow quantity fluctuation qw is conducted in such steps that, for example, a measured value x of the position of the stopper (28) is inputted to a process model representing fluctuations in molten metal level and time-dependent variations in external disturbance, the difference between an estimated value L of the molten steel level obtained from a model and a measured value L is fed back to said model and both values are made equal to each other, and the difference between estimated value L of the molten metal level and measured value L obtained during the process of the computation is integrated. Then, an operating quantity c of said stopper (28) required for compensating for the estimated flow quantity fluctuation qw (external disturbance) is found and, by operating said stopper (28) on the basis of said quantity c, a level of molten metal is controlled to be constant all the time.
摘要翻译：在通过使用设置有用于控制流入模具中的熔融金属量的止动器（28）的连续铸造设备来连续铸造金属件的情况下，流入和流入的熔融金属的流动量的波动qw 从模具（18）中的熔融金属的水平的测量值L中的至少两个值估计出来的从外部干扰引起的模具（18）的测量值x或位置的位置的指令值Pr 所述止动件（28）和铸造速度的测量值V。流量变化qw的估计是以例如将停止器（28）的位置的测量值x输入到表示熔融金属水平波动和外部干扰时间变化的过程模型的步骤进行的，将从模型获得的钢水平的估计值L与测量值L之间的差值反馈到所述模型，并将这两个值彼此相等，并且将熔融金属水平的估计值L与在计算过程中获得的测量值L被积分。然后，发现用于补偿估计的流量波动qw（外部扰动）所需的所述止动器（28）的操作量c，并且通过基于所述数量c操作所述止动器（28），熔融金属的水平被控制为始终不变。

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