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JPS57115956A - Production of high nitrogen steel - Google Patents

Production of high nitrogen steel

Info

Publication number
JPS57115956A
JPS57115956A JP257481A JP257481A JPS57115956A JP S57115956 A JPS57115956 A JP S57115956A JP 257481 A JP257481 A JP 257481A JP 257481 A JP257481 A JP 257481A JP S57115956 A JPS57115956 A JP S57115956A
Authority
JP
Japan
Prior art keywords
nozzle
steel
tundish
liquid
gaseous
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.)
Pending
Application number
JP257481A
Other languages
Japanese (ja)
Inventor
Kenji Isokawa
Kunio Yamaguchi
Masatoshi Ozawa
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.)
Daido Steel Co Ltd
Original Assignee
Daido 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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP257481A priority Critical patent/JPS57115956A/en
Publication of JPS57115956A publication Critical patent/JPS57115956A/en
Pending 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
    • B22D11/106—Shielding the molten jet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To improve the yield of N2 and to increase the content of nitrogen in molten steel by flowing gaseous N2 or liquid N2 to the sealed space region enclosing the casting flow of said steel. CONSTITUTION:The space region 10 enclosing the casting flow 5 wherein the molten steel 3 in a ladle 1 which is an upper vessel flows through a nozzle 4 down into a tundish 2 in a lower vessel is provided with a sealing body 17 consisting of a heat insulating material such as glass wool between an upper bracket 15 fixed to the lower part of a nozzle 12 and the upper part of a clay pipe 8 mounted to the charging port 6 of the tundish 2 in order to seal said space 10 in which gaseous N2 or liquid N2 is flowed through the nozzle 12. The gaseous N2 is flowed through said nozzle 12 at 100-3,000Nl/min or the liquid N2 at 0.2-5.0l/min into the steel, whereby the content of the nitrogen in the steel dropping into the tundish 2 is increased in a short time.
JP257481A 1981-01-13 1981-01-13 Production of high nitrogen steel Pending JPS57115956A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP257481A JPS57115956A (en) 1981-01-13 1981-01-13 Production of high nitrogen steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP257481A JPS57115956A (en) 1981-01-13 1981-01-13 Production of high nitrogen steel

Publications (1)

Publication Number Publication Date
JPS57115956A true JPS57115956A (en) 1982-07-19

Family

ID=11533138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP257481A Pending JPS57115956A (en) 1981-01-13 1981-01-13 Production of high nitrogen steel

Country Status (1)

Country Link
JP (1) JPS57115956A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58221642A (en) * 1982-06-16 1983-12-23 Kawasaki Steel Corp Method for adding nitrogen to molten steel
KR100450438B1 (en) * 2001-11-09 2004-10-01 조선내화 주식회사 sealing material found between of lower nozzle & submerged entry nozzle for continuous casting
KR100758448B1 (en) * 2001-05-14 2007-09-14 주식회사 포스코 A device for sealing the pouring port in continuous casting process
CN112676544A (en) * 2020-12-11 2021-04-20 北京首钢股份有限公司 Nitrogen increasing method in high-nitrogen steel continuous casting process

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58221642A (en) * 1982-06-16 1983-12-23 Kawasaki Steel Corp Method for adding nitrogen to molten steel
JPS6338264B2 (en) * 1982-06-16 1988-07-29 Kawasaki Steel Co
KR100758448B1 (en) * 2001-05-14 2007-09-14 주식회사 포스코 A device for sealing the pouring port in continuous casting process
KR100450438B1 (en) * 2001-11-09 2004-10-01 조선내화 주식회사 sealing material found between of lower nozzle & submerged entry nozzle for continuous casting
CN112676544A (en) * 2020-12-11 2021-04-20 北京首钢股份有限公司 Nitrogen increasing method in high-nitrogen steel continuous casting process

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