CN2863314Y - Blowing type fending dam for bakie - Google Patents
Blowing type fending dam for bakie Download PDFInfo
- Publication number
- CN2863314Y CN2863314Y CN 200520142243 CN200520142243U CN2863314Y CN 2863314 Y CN2863314 Y CN 2863314Y CN 200520142243 CN200520142243 CN 200520142243 CN 200520142243 U CN200520142243 U CN 200520142243U CN 2863314 Y CN2863314 Y CN 2863314Y
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- China
- Prior art keywords
- dam
- molten steel
- tundish
- air
- blowing type
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- Expired - Fee Related
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Abstract
A huffing dam in the middle of steelmaking and continuous casting is to provide air bricks connected to a gas cell in common dam, and the cell is connected to the argon pipe connected to the CC ladle with a metal pipe, the dam is provided on the ladle base between the retaining wall and the sliding gate in use, which plays roles of changing the flow field of molten steel by the dam and removes impurities by stirring molten steel with argon simultaneously, which applies to CC ladle to remove impurities and improve merit rating by blowing argon to stir molten steel.
Description
Affiliated technical field
The utility model relates to a kind of improved steel-making continuous casting tundish retaining dam, needing to be suitable for blowing argon gas to stir molten steel to reduce the tundish of molten steel inclusion content, raising molten steel cleanliness factor.
Background technology
Steel-making continuous casting tundish majority adds both at home and abroad barricade, retaining dam etc. is controlled the device of MOLTEN STEEL FLOW direction and flow path, purpose is to improve the flow field of molten steel in tundish, increase the molten steel time of staying, impel inclusion floating to get rid of, reach the metallurgical effect that reduces the molten steel inclusion content, improves the molten steel cleanliness factor.Existing tundish retaining dam function singleness only plays the effect that changes MOLTEN STEEL FLOW direction and flow path, and is limited to the effect that improves the molten steel cleanliness factor.
In the tundish molten steel, be blown into argon gas, the buoyancy of Argon Bubble produces the airlift pump phenomenon, not only can catch inclusion particle, and carries the inclusion particle removal of together floating, and help field trash collision and grow up and get rid of, thereby can be at purify hot metal to a greater extent.Chinese scholars has been done the theory and the laboratory research of much stirring molten steel about the tundish blowing argon gas, some practical applications have been obtained abroad, and more just rest at home in the laboratory work, the practical application of tundish blowing argon gas purify hot metal rarely has report.
The enforcement approach of external tundish blowing argon gas purify hot metal normally is embedded in the air blowing brick in the permanent layer at the bottom of the tundish bag, installs or do not install the retaining dam in addition, and for example Japan is toward friendly metal deer island steel mill and wide field steel mill of Nippon Steel; Also have report to adopt rotary spray gun to be blown into argon gas in the tundish, its basic principle is that an electric rotating machine is installed near tundish, by swivel joint lance is inserted in the tundish molten steel, and one side rotary spray gun then is Yi Bian be blown into argon gas.Two kinds of methods have all played the effect of field trash in the good removal molten steel, but first method working strength of workers when the remaining air blowing brick of cleaning is bigger, and the turnaround time of tundish is also long, and the second method equipment investment is bigger, and needing external power, energy consumption is than higher.
Summary of the invention
The present invention installs blowning installation at retaining in the dam, and the function on retaining dam and the effect of tundish blowing argon gas are united two into one, and provides that a kind of purify hot metal efficient height, installing/dismounting are easy, the device of the tundish blowing purification molten steel of small investment.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the generalized section of a kind of structure of the present invention.
Fig. 2 is assembling and the fundamental diagram of the present invention in tundish.
1 air brick among the figure, 2 retaining dams, 3 metallic conduits, 4 air chambers, 5 long nozzles, 6 barricades, 7 molten steel, 8 external argon gas pipelines, 9 middle water containing openings.
The specific embodiment
With reference to Fig. 1, air brick 1 is installed in the retaining dam 2, and air brick 1 links to each other with air chamber 4, and air chamber 4 can design in air brick 1 inside, also can reserve between air brick 1 and retaining dam 2, and air chamber 4 is connected with external argon gas pipeline by metallic conduit 3.Air brick 1 adopts corundum matter, corundum spinel, chrome corundum, Zirconium corundum or high alumina refractories to adopt cast or machine to press the mode moulding, after burning till through 110 ℃～1600 ℃ dryings, metallic conduit 3 is installed, adopt the mode of cast that air brick 1 is installed in the retaining dam 2 then, less than making air blowing type retaining dam after 1400 ℃ of dryings.
With reference to Fig. 2, on the present invention was installed at the bottom of the bag between continuous casting weir and dam in tundish 6 and the middle water containing opening 9, metallic conduit 3 was connected with external argon gas pipeline 8.After molten steel 7 enters tundish from long nozzle 5, flow, run into stopping of retaining dam to middle water containing opening 9 directions, molten steel moves upward, stir, mix with the argon gas in being blown into tundish, argon gas is owing to be subjected to buoyancy function rising discharge, and field trash collides mutually, grows up, gets rid of in the drive molten steel.Finish using, remaining air blowing type retaining dam disintegrates automatically with surplus, the residual lining of casting, disassembles conveniently.
With domestic certain sheet blank continuous casting tundish is object, by mathematics, physical analogy means, is reference frame with common retaining dam, and after use the utility model was blown and stirred, the clearance of field trash total amount can improve 10%～20% in the molten steel.
Claims (3)
1. steel-making continuous casting tundish air blowing type retaining dam is characterized in that it installs air brick in common retaining dam, and air brick links to each other with air chamber, and air chamber is connected by the external argon gas pipeline of metallic conduit and tundish.
2. by the described air blowing type retaining of claim 1 dam, it is characterized in that the air chamber that links to each other with air brick can design in air brick inside, also can between air brick and retaining dam, reserve.
3. by the described air blowing type of claim 1 retaining dam, it is characterized in that it is installed at the bottom of the bag between steel-making continuous casting weir and dam in tundish and the middle water containing opening on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520142243 CN2863314Y (en) | 2005-12-01 | 2005-12-01 | Blowing type fending dam for bakie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520142243 CN2863314Y (en) | 2005-12-01 | 2005-12-01 | Blowing type fending dam for bakie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2863314Y true CN2863314Y (en) | 2007-01-31 |
Family
ID=37675767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520142243 Expired - Fee Related CN2863314Y (en) | 2005-12-01 | 2005-12-01 | Blowing type fending dam for bakie |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2863314Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966577A (en) * | 2010-10-19 | 2011-02-09 | 维苏威高级陶瓷(苏州)有限公司 | Novel continuous casting tundish |
| CN102847923A (en) * | 2011-06-28 | 2013-01-02 | 宝山钢铁股份有限公司 | Pouring basket with molten steel purity stably improved under low argon consumption and metallurgical method thereof |
| CN112760454A (en) * | 2020-12-23 | 2021-05-07 | 二重（德阳）重型装备有限公司 | Purification method for molten steel of die casting tundish |
-
2005
- 2005-12-01 CN CN 200520142243 patent/CN2863314Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966577A (en) * | 2010-10-19 | 2011-02-09 | 维苏威高级陶瓷(苏州)有限公司 | Novel continuous casting tundish |
| CN102847923A (en) * | 2011-06-28 | 2013-01-02 | 宝山钢铁股份有限公司 | Pouring basket with molten steel purity stably improved under low argon consumption and metallurgical method thereof |
| CN102847923B (en) * | 2011-06-28 | 2015-04-22 | 宝山钢铁股份有限公司 | Tundish with molten steel purity stably improved under low argon consumption and metallurgical method thereof |
| CN112760454A (en) * | 2020-12-23 | 2021-05-07 | 二重（德阳）重型装备有限公司 | Purification method for molten steel of die casting tundish |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |