JPS57154357A - Continuous casting method and tundish used for its execution - Google Patents
Continuous casting method and tundish used for its executionInfo
- Publication number
- JPS57154357A JPS57154357A JP1832781A JP1832781A JPS57154357A JP S57154357 A JPS57154357 A JP S57154357A JP 1832781 A JP1832781 A JP 1832781A JP 1832781 A JP1832781 A JP 1832781A JP S57154357 A JPS57154357 A JP S57154357A
- Authority
- JP
- Japan
- Prior art keywords
- bubbles
- molten steel
- holes
- tundish
- flow
- 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
Landscapes
- Continuous Casting (AREA)
Abstract
PURPOSE: To perform flotation of non-metallic inclusions in molten steel efficiently by specifying bubble diameters in the molten metal surface in the stage of blowing gas into the molten metal from the bottom part of a tundish and obtaining ascending flow of small bubbles.
CONSTITUTION: An inert gas is blown through the vent holes 3 of the board 2 in the bottom part of a tundish 1 into the molten steel flowing in an arrow direction in the tundish 1. At the time, the diameters of the bubbles in the molten steel surface are controlled to ≤2mm. With this value of the bubble diameters being a boundary, the removal rate of microparticles fluctuates considerably, and at ≤2mm, the shapes of the bubbles maintain a spherical shape and the bubbles float orderly. Therefore, the diameter d of the holes 3 are determined from calculation and water model experiment. Next, the bubbles formed through the holes 3 do not join to each other and therefore it is necessary to satisfy the equationIfor the spacings P among the holes 3. The width (x) of the ascending flow zone of the bubbles is set at the value specified by the equation II (D: the depth of the molten steel, μb: the existing ratio of the bubbles occupying in the section of the molten steel perpendicular to the flow direction of the molten steel) in order to bring the inclusions blowing together with the molten steel of average velocity (v) of flow into collision against the bubbles of average floating velocity (u) one or more times.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56018327A JPS5910863B2 (en) | 1981-02-10 | 1981-02-10 | Continuous casting method and tandate used for its implementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56018327A JPS5910863B2 (en) | 1981-02-10 | 1981-02-10 | Continuous casting method and tandate used for its implementation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57154357A true JPS57154357A (en) | 1982-09-24 |
| JPS5910863B2 JPS5910863B2 (en) | 1984-03-12 |
Family
ID=11968519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56018327A Expired JPS5910863B2 (en) | 1981-02-10 | 1981-02-10 | Continuous casting method and tandate used for its implementation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5910863B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5999058U (en) * | 1982-12-24 | 1984-07-04 | 品川白煉瓦株式会社 | Molten steel ladle lining refractory structure |
-
1981
- 1981-02-10 JP JP56018327A patent/JPS5910863B2/en not_active Expired
Non-Patent Citations (1)
| Title |
|---|
| METALLURGICAL TRANSACTIONS=1976 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5999058U (en) * | 1982-12-24 | 1984-07-04 | 品川白煉瓦株式会社 | Molten steel ladle lining refractory structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5910863B2 (en) | 1984-03-12 |
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