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    • 1. 发明授权
    • Method and apparatus for controlling the molten metal level in a mold in continuous casting
    • 用于控制连续铸造中的模具中的熔融金属水平的方法和装置
    • US06466001B2
    • 2002-10-15
    • US09739870
    • 2000-12-20
    • Kazuharu HanazakiToshihiko MurakamiMasahiko Oka
    • Kazuharu HanazakiToshihiko MurakamiMasahiko Oka
    • G01R2316
    • B22D11/181B22D2/003B22D11/16B22D11/18
    • A method and apparatus for controlling the level of molten metal in a mold for continuous casting by using a molten metal level control system incorporating a molten metal level controller in the control loop thereof, which comprises damping selectively the predetermined frequency of frequencies of periodical molten metal level fluctuations through a notch filter installed in the control loop. The control loop preferably includes the phase compensation calculation part for compensating the phase delay of the stopper opening position control signal for adjusting the amount of the molten metal to be fed to the mold. The control apparatus in the control loop comprises a molten metal level senser, an FFT analyzer, an automatic tuning device for dealing with the results of the FFT analysis, a molten metal level controller and a notch filter.
    • 一种用于通过在其控制回路中使用包含熔融金属液位控制器的熔融金属液位控制系统来控制用于连续铸造的模具中的熔融金属的水平的方法和装置,其包括选择性地阻挡周期性熔融金属的预定频率频率 通过安装在控制回路中的陷波滤波器的电平波动。 控制回路优选地包括相位补偿计算部分,用于补偿止动器打开位置控制信号的相位延迟,用于调节要供给到模具的熔融金属的量。 控制回路中的控制装置包括熔融金属液位传感器,FFT分析器,用于处理FFT分析结果的自动调谐装置,熔融金属液位控制器和陷波滤波器。
    • 2. 发明授权
    • Continuous casting method and apparatus thereof
    • 连铸方法及其装置
    • US6102101A
    • 2000-08-15
    • US849868
    • 1997-06-18
    • Kazuharu HanazakiMasakazu KoideToshihiko MurakamiMasahiko OkaSeiji KumakuraKazuo Okamura
    • Kazuharu HanazakiMasakazu KoideToshihiko MurakamiMasahiko OkaSeiji KumakuraKazuo Okamura
    • B22D11/12B22D11/128B22D11/20
    • B22D11/1206
    • A continuous casting method and apparatus therefor wherein a reaction force/reduction controller selects a pivot reduction roll such that the thickness of the solidified shell of the cast slab having a liquid core is equal to the target thickness T.sub.ref, and calculates a difference between a thickness T.sub.in of the cast slab having a liquid core at the inlet of the reduction roll zone PRT and the target thickness T.sub.ref, i.e., .DELTA.T. The resulting value of .DELTA.T, i.e., a target reduction is provided to the reduction controllers 2 of the pivot reduction roll. The reaction force/reduction controller 1 assigns target reductions 1/3 .DELTA.T and 2/3 .DELTA.T to the two reduction rolls upstream of the pivot reduction roll. The reaction force/reduction controller 1 calculates a target pressure (P.sub.i +.alpha.) on the basis of the selected value for .alpha., and the resulting target pressure (P.sub.i +.alpha.) is provided to each of the reduction controllers 2 of the reduction rolls, downstream of the pivot reduction roll.
    • PCT No.PCT / JP96 / 02983第 371日期:1997年6月18日 102(e)日期1996年6月18日PCT提交1996年10月15日PCT公布。 第WO97 / 14522号公报 日期1997年04月24日一种连续铸造方法及其设备,其中反作用力/还原控制器选择枢转压缩辊,使得具有液芯的铸坯的凝固壳的厚度等于目标厚度Tref,并计算 在还原辊区域PRT的入口处具有液芯的铸坯的厚度Tin与目标厚度Tref即DELTA T之间的差异。将DELTA T的结果值即目标减小值提供给 减速辊2的减速控制器2。 反作用力/还原控制器1将目标减速度+ E,fra 1/3 + EE DELTA T和+ E,fra 2/3 + EE DELTA T分配给枢转减速辊上游的两个还原辊。 反作用力/还原控制器1基于所选择的α值来计算目标压力(Pi +α),并且将所得到的目标压力(Pi +α)提供给还原辊的每个减速控制器2, 枢轴减速辊。
    • 3. 发明授权
    • Method for controlling the level of molten metal for a continuous
casting machine
    • 用于控制连续铸造机的熔融金属水平的方法
    • US5913357A
    • 1999-06-22
    • US849909
    • 1997-06-18
    • Kazuharu HanazakiMasahiko Oka
    • Kazuharu HanazakiMasahiko Oka
    • B22D11/18B22D11/20
    • B22D11/181
    • In order to control a molten metal level within a mold of a system comprising a liquid core reduction device, while controlling a fluctuation of the molten metal level caused by a change of operational conditions, such as the withdrawal rate, reduction speed, etc., with improvement of the yield rate of product slabs, a method comprises the steps of: (i) estimating a disturbance to the molten metal level, which is caused by a change in operating conditions of a continuous casting machine before changing the operating conditions; (ii) determining an amount of correction of the control signal to eliminate the disturbance, and determining a delay time of the operation of the pouring means in responses to the control signal after correction; and (iii) applying a control signal containing the amount of correction in advance by a period of the delay time prior to the occurrence of a change in operating conditions.
    • PCT No.PCT / JP96 / 02984第 371日期:1997年6月18日 102(e)日期1996年6月18日PCT提交1996年10月15日PCT公布。 公开号WO97 / 14521 日期1997年4月24日为了控制包括液芯减速装置的系统的模具内的熔融金属水平,同时控制由诸如退出速度的操作条件的变化引起的熔融金属水平的波动, 速度等,随着产品板坯成品率的提高,一种方法包括以下步骤:(i)估计在改变连续铸造机器的操作条件的变化之前引起的熔融金属水平的干扰 操作条件; (ii)确定所述控制信号的校正量以消除所述干扰,以及响应于校正后的控制信号确定所述倾倒装置的操作的延迟时间; 以及(iii)在发生操作条件变化之前,将包含校正量的控制信号预先施加延迟时间的周期。