JPS56168941A - Manufacture of continuous casting slab with few blowholes and little nonmetallic inclusion - Google Patents

Manufacture of continuous casting slab with few blowholes and little nonmetallic inclusion

Info

Publication number
JPS56168941A
JPS56168941A JP7101180A JP7101180A JPS56168941A JP S56168941 A JPS56168941 A JP S56168941A JP 7101180 A JP7101180 A JP 7101180A JP 7101180 A JP7101180 A JP 7101180A JP S56168941 A JPS56168941 A JP S56168941A
Authority
JP
Japan
Prior art keywords
molten steel
well
continuous casting
vacuum degassing
casting slab
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
JP7101180A
Other languages
Japanese (ja)
Other versions
JPS6345901B2 (en
Inventor
Noboru Hirota
Yasushige Miyagawa
Naonori Moriya
Hiroaki Shinagawa
Jun Kadoi
Hirofumi Furukawa
Yasuo Fujikawa
Koichi Tamura
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.)
Mitsubishi Heavy Industries Ltd
Nippon Steel Nisshin Co Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Nisshin Steel Co Ltd
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 Mitsubishi Heavy Industries Ltd, Nisshin Steel Co Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP7101180A priority Critical patent/JPS56168941A/en
Publication of JPS56168941A publication Critical patent/JPS56168941A/en
Publication of JPS6345901B2 publication Critical patent/JPS6345901B2/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
    • B22D11/113—Treating the molten metal by vacuum treating

Abstract

PURPOSE:To manufacture continuous casting slab with few blowholes and little nonmetallic inclusion as well, by conducting the vacuum degassing operation as well as deoxidating operation using Al in a cradle and conducting again the vacuum degassing operation in a tundish. CONSTITUTION:The molten steel, after being treated by converter steel making process, is tapped into a cradle 3 which being set in a vacuum chamber, where the molten steel is subjected to the vacuum degassing operation as well as deoxidizing operation using Al and thus, contents such as carbon and residual oxygen are reduced. The molten steel havng been degassed in the cradle is then poured into a tundish 2, where the contineous vacuum degassing operation as well as decarbonizing and deoxidizing operations are again conducted before pouring to a mold. The deoxidized molten steel is poured into a mold 1 sealed from the atmosphere by means of an immerged nozzle 9 and an artificial slag 12. Therefore, the generation of gaseous CO is minimized in the process of solidification of molten steel in the mold 1 and a sound and continuous casting slab with no blowholes is manufactured.
JP7101180A 1980-05-28 1980-05-28 Manufacture of continuous casting slab with few blowholes and little nonmetallic inclusion Granted JPS56168941A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7101180A JPS56168941A (en) 1980-05-28 1980-05-28 Manufacture of continuous casting slab with few blowholes and little nonmetallic inclusion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7101180A JPS56168941A (en) 1980-05-28 1980-05-28 Manufacture of continuous casting slab with few blowholes and little nonmetallic inclusion

Publications (2)

Publication Number Publication Date
JPS56168941A true JPS56168941A (en) 1981-12-25
JPS6345901B2 JPS6345901B2 (en) 1988-09-12

Family

ID=13448125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7101180A Granted JPS56168941A (en) 1980-05-28 1980-05-28 Manufacture of continuous casting slab with few blowholes and little nonmetallic inclusion

Country Status (1)

Country Link
JP (1) JPS56168941A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101047579B1 (en) 2008-12-30 2011-07-07 주식회사 포스코 Tapping device and tapping method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0525122Y2 (en) * 1988-09-30 1993-06-25
JPH0332309U (en) * 1989-08-03 1991-03-28

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956830A (en) * 1972-10-05 1974-06-03
JPS5497520A (en) * 1978-01-19 1979-08-01 Sumitomo Metal Ind Ltd Production of steel to be enameled

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4956830A (en) * 1972-10-05 1974-06-03
JPS5497520A (en) * 1978-01-19 1979-08-01 Sumitomo Metal Ind Ltd Production of steel to be enameled

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101047579B1 (en) 2008-12-30 2011-07-07 주식회사 포스코 Tapping device and tapping method

Also Published As

Publication number Publication date
JPS6345901B2 (en) 1988-09-12

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