WO1993004803A1 - Method of and device for controlling level of molten metal in continuous casting - Google Patents

Method of and device for controlling level of molten metal in continuous casting Download PDF

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Publication number
WO1993004803A1
WO1993004803A1 PCT/JP1991/001210 JP9101210W WO9304803A1 WO 1993004803 A1 WO1993004803 A1 WO 1993004803A1 JP 9101210 W JP9101210 W JP 9101210W WO 9304803 A1 WO9304803 A1 WO 9304803A1
Authority
WO
WIPO (PCT)
Prior art keywords
molten metal
measured value
stopper
level
estimated
Prior art date
Application number
PCT/JP1991/001210
Other languages
French (fr)
Japanese (ja)
Inventor
Kazuya Asano
Takayuki Kaji
Kazuo Arai
Shuji Tanaka
Michio Ibaraki
Yuki Nabeshima
Hiromitsu Yamanaka
Masaki Takashi
Saburo Moriwaki
Mototatsu Sugizawa
Hiroshi Nomura
Masayuki Onishi
Original Assignee
Kawasaki Steel Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kawasaki Steel Corporation filed Critical Kawasaki Steel Corporation
Priority to CA002094029A priority Critical patent/CA2094029C/en
Priority to US08/030,149 priority patent/US5311924A/en
Priority to PCT/JP1991/001210 priority patent/WO1993004803A1/en
Priority claimed from CA002094029A external-priority patent/CA2094029C/en
Publication of WO1993004803A1 publication Critical patent/WO1993004803A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/18—Controlling or regulating processes or operations for pouring

Abstract

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.
PCT/JP1991/001210 1991-09-12 1991-09-12 Method of and device for controlling level of molten metal in continuous casting WO1993004803A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002094029A CA2094029C (en) 1991-09-12 1991-09-12 Molten metal level control method and device for continuous casting
US08/030,149 US5311924A (en) 1991-09-12 1991-09-12 Molten metal level control method and device for continuous casting
PCT/JP1991/001210 WO1993004803A1 (en) 1991-09-12 1991-09-12 Method of and device for controlling level of molten metal in continuous casting

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002094029A CA2094029C (en) 1991-09-12 1991-09-12 Molten metal level control method and device for continuous casting
PCT/JP1991/001210 WO1993004803A1 (en) 1991-09-12 1991-09-12 Method of and device for controlling level of molten metal in continuous casting

Publications (1)

Publication Number Publication Date
WO1993004803A1 true WO1993004803A1 (en) 1993-03-18

Family

ID=25676086

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1991/001210 WO1993004803A1 (en) 1991-09-12 1991-09-12 Method of and device for controlling level of molten metal in continuous casting

Country Status (1)

Country Link
WO (1) WO1993004803A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103341609A (en) * 2013-07-10 2013-10-09 鞍钢股份有限公司 Method for controlling fluctuation of crystallizer liquid level

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56141953A (en) * 1980-04-04 1981-11-05 Kawasaki Steel Corp Method for controlling pouring flow rate of molten steel for continuous casting
JPS62168652A (en) * 1986-01-20 1987-07-24 Kobe Steel Ltd Molten metal surface level control method in continuous casting machine
JPS6316219B2 (en) * 1982-08-09 1988-04-07 Nippon Steel Corp
JPH02303664A (en) * 1989-05-18 1990-12-17 Nippon Steel Corp Apparatus for controlling molten metal surface level in continuous casting process
JPH03110051A (en) * 1989-09-22 1991-05-10 Kawasaki Steel Corp Method for controlling molten metal surface level in continuous casting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56141953A (en) * 1980-04-04 1981-11-05 Kawasaki Steel Corp Method for controlling pouring flow rate of molten steel for continuous casting
JPS6316219B2 (en) * 1982-08-09 1988-04-07 Nippon Steel Corp
JPS62168652A (en) * 1986-01-20 1987-07-24 Kobe Steel Ltd Molten metal surface level control method in continuous casting machine
JPH02303664A (en) * 1989-05-18 1990-12-17 Nippon Steel Corp Apparatus for controlling molten metal surface level in continuous casting process
JPH03110051A (en) * 1989-09-22 1991-05-10 Kawasaki Steel Corp Method for controlling molten metal surface level in continuous casting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103341609A (en) * 2013-07-10 2013-10-09 鞍钢股份有限公司 Method for controlling fluctuation of crystallizer liquid level
CN103341609B (en) * 2013-07-10 2015-03-11 鞍钢股份有限公司 Method for controlling fluctuation of crystallizer liquid level

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