JPS5558319A - Vacuum degassing method of molten steel - Google Patents
Vacuum degassing method of molten steelInfo
- 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
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.
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)
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 |
-
1978
- 1978-10-27 JP JP13300878A patent/JPS5937721B2/en not_active Expired
Cited By (1)
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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