JPS5558316A - Method and apparatus for vacuum degassing of molten steel - Google Patents

Method and apparatus for vacuum degassing of molten steel

Info

Publication number
JPS5558316A
JPS5558316A JP13015578A JP13015578A JPS5558316A JP S5558316 A JPS5558316 A JP S5558316A JP 13015578 A JP13015578 A JP 13015578A JP 13015578 A JP13015578 A JP 13015578A JP S5558316 A JPS5558316 A JP S5558316A
Authority
JP
Japan
Prior art keywords
path
molten steel
vessel
ladle
shorter
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
JP13015578A
Other languages
Japanese (ja)
Other versions
JPS5617406B2 (en
Inventor
Naonori Moriya
Masanobu Fujii
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 Nisshin Co Ltd
Original Assignee
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 Nisshin Steel Co Ltd filed Critical Nisshin Steel Co Ltd
Priority to JP13015578A priority Critical patent/JPS5558316A/en
Publication of JPS5558316A publication Critical patent/JPS5558316A/en
Publication of JPS5617406B2 publication Critical patent/JPS5617406B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To improve the reflux efficiency and degassing efficiency of vacuum degassing treatment by dividing the lower opening end of a vacumm vessel to two paths, of which one is shorter, dipping the vessel deviatedly in a molten steel vessel and blowing inert gas toward the shorter path. CONSTITUTION:The lower opening end of a vacuum vessel 12 is divided by a partition plate 2 and the path 3 on the one side is notched of the outside circumferential edge part so that it is formed shorter than the other path 4. A porous plug P is mounted to the side wall of the partition plate 2 facing the path 3 side and a gas flow line 7 is formed to the porous plug P. This vacuum vessel 12 is dipped in the position deviated from the center in the ladle 10 under the molten steel surface with the path 3 being positioned closer to the center of the ladle 10. Inert gas is then blown from the porous plug P. The rising flow of the molten steel by the gas blow ascends in the shorter path and is exposed to vacuum, after which it goes beyond the back part of the partition plate 2, goes down the inside of the path 4 and is discharged to the deep part near the inside wall of the ladle 10. Thereby, the entire part of the molten steel in the ladle 10 is effectively mixed and evened.
JP13015578A 1978-10-23 1978-10-23 Method and apparatus for vacuum degassing of molten steel Granted JPS5558316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13015578A JPS5558316A (en) 1978-10-23 1978-10-23 Method and apparatus for vacuum degassing of molten steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13015578A JPS5558316A (en) 1978-10-23 1978-10-23 Method and apparatus for vacuum degassing of molten steel

Publications (2)

Publication Number Publication Date
JPS5558316A true JPS5558316A (en) 1980-05-01
JPS5617406B2 JPS5617406B2 (en) 1981-04-22

Family

ID=15027296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13015578A Granted JPS5558316A (en) 1978-10-23 1978-10-23 Method and apparatus for vacuum degassing of molten steel

Country Status (1)

Country Link
JP (1) JPS5558316A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02200721A (en) * 1989-01-30 1990-08-09 Nkk Corp Immersion pipe for refining by degassing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6151423B1 (en) 2016-08-30 2017-06-21 旭化成株式会社 Methacrylic resin composition, optical film, and optical component

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4111129Y1 (en) * 1965-09-20 1966-05-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4111129Y1 (en) * 1965-09-20 1966-05-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02200721A (en) * 1989-01-30 1990-08-09 Nkk Corp Immersion pipe for refining by degassing

Also Published As

Publication number Publication date
JPS5617406B2 (en) 1981-04-22

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