JPS57110611A - Vacuum degassing device of molten steel - Google Patents
Vacuum degassing device of molten steelInfo
- Publication number
- JPS57110611A JPS57110611A JP18623280A JP18623280A JPS57110611A JP S57110611 A JPS57110611 A JP S57110611A JP 18623280 A JP18623280 A JP 18623280A JP 18623280 A JP18623280 A JP 18623280A JP S57110611 A JPS57110611 A JP S57110611A
- Authority
- JP
- Japan
- Prior art keywords
- molten steel
- vessel
- vacuum
- gaseous
- pipe
- 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
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 accelerate the deoxidation, dehydrogeneration and decarburization of molten steel effectively by making the molten steel depth in a vacuum vessel large and providing a gas ejection port between the opening ends of two pieces of immersion tubes in the bottom of the vacuum vessel. CONSTITUTION:Two pieces of immersion tubes 3A, 3B are provided at the bottom end of a vacuum vessel 2 connected to a vacuum pump 1 and gaseous Ar or the like is blown to the midway of the sucking up pipe 3A. Then, molten steel 4 circulates through the sucking up pipe 3A and downflow pipe 3B on account of the principle of an air pump. At this time, a large amt. of an inert gas, for example, gaseous Ar, is blown through a gas ejection port 6 into the molten steel 4 in the vessel 2 located at 500-1,000mm. the depth H of the molten steel 4. Then, the molten steel 4 in the vessel 2 is vigorously stirred by the gaseous Ar bubbles, by which the bubbling of the molten steel 4 is accelerated and the vacuum exposure area thereof is increased considerably. Hence, the decarburization is progressed quickly, and the degassing such as deoxidation and dehydrogenation is accelerated as well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18623280A JPS57110611A (en) | 1980-12-26 | 1980-12-26 | Vacuum degassing device of molten steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18623280A JPS57110611A (en) | 1980-12-26 | 1980-12-26 | Vacuum degassing device of molten steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57110611A true JPS57110611A (en) | 1982-07-09 |
Family
ID=16184661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18623280A Pending JPS57110611A (en) | 1980-12-26 | 1980-12-26 | Vacuum degassing device of molten steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57110611A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0366293A2 (en) * | 1988-10-24 | 1990-05-02 | A. FINKL & SONS CO. | Tri-level method and apparatus for post melting treatment of molten steel |
-
1980
- 1980-12-26 JP JP18623280A patent/JPS57110611A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0366293A2 (en) * | 1988-10-24 | 1990-05-02 | A. FINKL & SONS CO. | Tri-level method and apparatus for post melting treatment of molten steel |
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