JPS57115949A - Production of clean steel in continuous casting - Google Patents

Production of clean steel in continuous casting

Info

Publication number
JPS57115949A
JPS57115949A JP20881A JP20881A JPS57115949A JP S57115949 A JPS57115949 A JP S57115949A JP 20881 A JP20881 A JP 20881A JP 20881 A JP20881 A JP 20881A JP S57115949 A JPS57115949 A JP S57115949A
Authority
JP
Japan
Prior art keywords
molten steel
inclusions
continuous casting
tundish
ton
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP20881A
Other languages
Japanese (ja)
Other versions
JPS6332539B2 (en
Inventor
Junichi Wakita
Norio Katsuyama
Motoki Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP20881A priority Critical patent/JPS57115949A/en
Publication of JPS57115949A publication Critical patent/JPS57115949A/en
Publication of JPS6332539B2 publication Critical patent/JPS6332539B2/ja
Granted legal-status Critical Current

Links

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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/11—Treating the molten metal
    • B22D11/116—Refining the metal
    • B22D11/118—Refining the metal by circulating the metal under, over or around weirs

Abstract

PURPOSE: To remove many inclusions both at the steady time and at the exchanging of ladles and to improve yields by maintaining the depth of the molten steel in a tundish at the limit value at which the inclusions float or above during continuous casting.
CONSTITUTION: In continuous casting, the molten steel S in a ladle 21 is agitated and oscillated at the 10W300mmHg degrees of vaccum for the time t1 determined by the equation II (where, V: the volume of molten steel ton, F: the rate of reflux ton/min, (a): the constant determined by the intended degree of cleanliness), whereby the inclusions therein are reduced. This molten steel is supplied to a tundish 20. At this time, the depth of the molten steel S in the tundish 20 is maintained at the limit value Ls of the equationIdetermined beforehand in accordance with casting speed Vc and the grain sizes of the inclusions to be expelled or above (where Vc: ton/min) at all times at charging ports 281, 282, whereby the many inclusions are removed.
COPYRIGHT: (C)1982,JPO&Japio
JP20881A 1981-01-05 1981-01-05 Production of clean steel in continuous casting Granted JPS57115949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20881A JPS57115949A (en) 1981-01-05 1981-01-05 Production of clean steel in continuous casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20881A JPS57115949A (en) 1981-01-05 1981-01-05 Production of clean steel in continuous casting

Publications (2)

Publication Number Publication Date
JPS57115949A true JPS57115949A (en) 1982-07-19
JPS6332539B2 JPS6332539B2 (en) 1988-06-30

Family

ID=11467544

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20881A Granted JPS57115949A (en) 1981-01-05 1981-01-05 Production of clean steel in continuous casting

Country Status (1)

Country Link
JP (1) JPS57115949A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62197251A (en) * 1986-02-24 1987-08-31 Nisshin Steel Co Ltd Tundish for continuous casting
WO2003051560A3 (en) * 2001-12-14 2004-01-29 Voest Alpine Ind Anlagen Tun dish and method for production of a metal strip of high purity

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62197251A (en) * 1986-02-24 1987-08-31 Nisshin Steel Co Ltd Tundish for continuous casting
WO2003051560A3 (en) * 2001-12-14 2004-01-29 Voest Alpine Ind Anlagen Tun dish and method for production of a metal strip of high purity
US7108048B2 (en) 2001-12-14 2006-09-19 Voest-Alpine Industrieanlagenbau Gmbh & Co. Tundish and method for production of a metal strip of high purity
AU2002358590B2 (en) * 2001-12-14 2007-05-31 Siemens Vai Metals Technologies Gmbh & Co. Tundish and method for production of a metal strip of high purity

Also Published As

Publication number Publication date
JPS6332539B2 (en) 1988-06-30

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