JPS5558319A - Vacuum degassing method of molten steel - Google Patents

Vacuum degassing method of molten steel

Info

Publication number
JPS5558319A
JPS5558319A JP13300878A JP13300878A JPS5558319A JP S5558319 A JPS5558319 A JP S5558319A JP 13300878 A JP13300878 A JP 13300878A JP 13300878 A JP13300878 A JP 13300878A JP S5558319 A JPS5558319 A JP S5558319A
Authority
JP
Japan
Prior art keywords
molten steel
pipe
linear motor
degassing
outside circumference
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
JP13300878A
Other languages
Japanese (ja)
Other versions
JPS5937721B2 (en
Inventor
Kiichi Narita
Takashi Mori
Kenzo Ayada
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP13300878A priority Critical patent/JPS5937721B2/en
Publication of JPS5558319A publication Critical patent/JPS5558319A/en
Publication of JPS5937721B2 publication Critical patent/JPS5937721B2/en
Expired 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 increase the degassing effective area of molten steel by forming a nozzle to the end of a pass pipe for sucking up molten steel, disposing a linear motor on the outside circumference of the pass pipe and forming upward flow while heating the molten steel. CONSTITUTION:An injection nozzle 3a is formed to the end of a molten steel rise pipe 3 provided to a vacuum vessel 2 and a linear motor 7 is disposed to the outside circumference of the rise pipe 3. This motor is then operated at frequencies of 50- 60 cycles. As a result, the molten steel 4 rises at a high speed in the rise pipe 3 while being heated and is injected in liquid drop form into a vacuum vessel 2 from the injection nozzle 3a. The entire surface of the liquid drops become the effective degassing area and further the degassing effect is increased by the stirring effect accompanied with falling into the vessel 2. If a linear motor 8 is installed to the outside circumference of the down pipe 5 as well to accelerate the downward flow of the molten steel 4, then the molten steel 4 in the ladle 1 is sufficiently stirred to deep part.
JP13300878A 1978-10-27 1978-10-27 Vacuum degassing method for molten steel Expired JPS5937721B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13300878A JPS5937721B2 (en) 1978-10-27 1978-10-27 Vacuum degassing method for molten steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13300878A JPS5937721B2 (en) 1978-10-27 1978-10-27 Vacuum degassing method for molten steel

Publications (2)

Publication Number Publication Date
JPS5558319A true JPS5558319A (en) 1980-05-01
JPS5937721B2 JPS5937721B2 (en) 1984-09-11

Family

ID=15094619

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13300878A Expired JPS5937721B2 (en) 1978-10-27 1978-10-27 Vacuum degassing method for molten steel

Country Status (1)

Country Link
JP (1) JPS5937721B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0336209A (en) * 1989-06-29 1991-02-15 Nippon Steel Corp Method and apparatus for rh vacuum degassing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0336209A (en) * 1989-06-29 1991-02-15 Nippon Steel Corp Method and apparatus for rh vacuum degassing

Also Published As

Publication number Publication date
JPS5937721B2 (en) 1984-09-11

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