JPS54149314A - Method and apparatus for dh vacuum degassing molten steel - Google Patents

Method and apparatus for dh vacuum degassing molten steel

Info

Publication number
JPS54149314A
JPS54149314A JP5742778A JP5742778A JPS54149314A JP S54149314 A JPS54149314 A JP S54149314A JP 5742778 A JP5742778 A JP 5742778A JP 5742778 A JP5742778 A JP 5742778A JP S54149314 A JPS54149314 A JP S54149314A
Authority
JP
Japan
Prior art keywords
molten steel
ladle
vessel
pipe
vacuum
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
JP5742778A
Other languages
Japanese (ja)
Other versions
JPS5724049B2 (en
Inventor
Mutsumitsu Odera
Kazuya Kudo
Yoshiaki Takeda
Yutaka Nishida
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 JP5742778A priority Critical patent/JPS54149314A/en
Publication of JPS54149314A publication Critical patent/JPS54149314A/en
Publication of JPS5724049B2 publication Critical patent/JPS5724049B2/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

Abstract

PURPOSE:To enable a large amt. of molten steel to be vacuum degassed by making the outside diameter of a vacuum vessel smaller than the inside diameter of a molten steel ladle and by sucking molten steel into the vessel through suction pipe while blowing an inert gas into the pipe. CONSTITUTION:Molten steel is charged into ladle 2, and suction pipe 3 of vacuum vessel 1 is dipped in the steel. Since the outside diameter of vessel 1 is smaller than the inside diameter of ladle 2, vessel 1 can freely be put into ladle 2. Simultaneously with evacuating vessel 1 an inert gas such as Ar is spouted from the inside of pipe 3 through inert gas supply pipe 4. A large amt. of molten steel in ladle 2 is rapidly degassed by suction and fall of 3.5 times/min with the press. difference between ladle 2 and vessel 1, and Ar gas spouted. Since vessel 1 can freely enter and leave ladle 2, a drop of vessel 1 in ladle 2 due to a molten steel surface fall in ladle 2 by suction of a large amt. of molten steel does not cause a trouble, so a large amt. of molten steel can be vacuum degassed.
JP5742778A 1978-05-15 1978-05-15 Method and apparatus for dh vacuum degassing molten steel Granted JPS54149314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5742778A JPS54149314A (en) 1978-05-15 1978-05-15 Method and apparatus for dh vacuum degassing molten steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5742778A JPS54149314A (en) 1978-05-15 1978-05-15 Method and apparatus for dh vacuum degassing molten steel

Publications (2)

Publication Number Publication Date
JPS54149314A true JPS54149314A (en) 1979-11-22
JPS5724049B2 JPS5724049B2 (en) 1982-05-21

Family

ID=13055347

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5742778A Granted JPS54149314A (en) 1978-05-15 1978-05-15 Method and apparatus for dh vacuum degassing molten steel

Country Status (1)

Country Link
JP (1) JPS54149314A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS447043Y1 (en) * 1966-01-22 1969-03-17
JPS49119802A (en) * 1973-03-17 1974-11-15
JPS50157206A (en) * 1974-06-10 1975-12-19
JPS52102815A (en) * 1976-02-25 1977-08-29 Sumitomo Metal Ind Ltd Dh vacuum degassing method for molten steel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS447043Y1 (en) * 1966-01-22 1969-03-17
JPS49119802A (en) * 1973-03-17 1974-11-15
JPS50157206A (en) * 1974-06-10 1975-12-19
JPS52102815A (en) * 1976-02-25 1977-08-29 Sumitomo Metal Ind Ltd Dh vacuum degassing method for molten steel

Also Published As

Publication number Publication date
JPS5724049B2 (en) 1982-05-21

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