CN104525866B - Device and method for preventing molten steel oxidation during pouring by utilizing CO2 gas - Google Patents
Device and method for preventing molten steel oxidation during pouring by utilizing CO2 gas Download PDFInfo
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- CN104525866B CN104525866B CN201410785786.2A CN201410785786A CN104525866B CN 104525866 B CN104525866 B CN 104525866B CN 201410785786 A CN201410785786 A CN 201410785786A CN 104525866 B CN104525866 B CN 104525866B
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- molten steel
- endless metal
- metal pipeline
- gas
- cup
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to a device and a method for preventing molten steel oxidation during pouring by utilizing CO2 gas and belongs to the technical field of molten steel pouring. The device for preventing molten steel oxidation during pouring by utilizing the CO2 gas comprises a casting mould, wherein a pouring cup and an annular metal pipeline with annular outline are arranged on the upper surface of the casting mould; the annular metal pipeline surrounds the pouring cup; the annular metal pipeline is communicated with a gas storage tank by a flexible pipeline; a control valve is arranged on the flexible pipeline; a plurality of gas outlet holes communicating inside and outside of the annular metal pipeline are at least distributed in the upper surface of the annular metal pipeline; and the plurality of gas outlet holes are distributed in an annular shape along the upper surface of the annular metal pipeline. By utilizing the device, contact of molten steel and other air can be effectively reduced, molten steel oxidation can be avoided, protection effect on molten steel can be played significantly and the like.
Description
Technical field
The present invention relates to the use of CO2The devices and methods therefor of molten steel oxidation when gas prevents from pouring into a mould, belongs to molten steel cast
Technical field.
Background technology
Under conditions of market economy, user's request is continually changing raising, for present casting industry, uses
Family requires more and more higher to the degree of purity of material so that need to reduce the field trash in molten steel as far as possible in fusion process, while
Prevent molten steel from bringing in foundry goods with the oxide inclusion that air contact is produced as far as possible in casting process, this allows for preventing from pouring into a mould
The measure that molten steel is aoxidized with air contact in journey is very important.
The content of the invention
Molten steel produces oxidation and causes oxide inclusion with air contact during in order to solve the problems, such as casting and pouring, this
It is bright to utilize CO there is provided one kind2Only devices and methods therefor of the molten steel with air contact in casting process.
What the above-mentioned technical purpose of the present invention was mainly solved by the following technical programs：Using CO2Gas prevents cast
When molten steel oxidation device, including casting mold, casting mold upper surface is provided with cup and profile endless metal pipeline in a ring, ring
Shape metallic conduit is connected and set in flexible conduit between endless metal pipeline and air accumulator around cup by flexible conduit
Be equipped with control valve, at least the upper surface in endless metal pipeline be disposed with inside and outside the annular metallic conduit of connection it is some on outlet
Hole, some upper ventholes arrange in a ring along the upper surface of endless metal pipeline, the aperture phase of some upper ventholes
Together, upper venthole is played from endless metal pipeline in the distribution density of endless metal pipeline upper surface with the junction of flexible conduit
Gradually increase with the direction of the junction of flexible conduit away from endless metal pipeline.Endless metal pipeline is placed on into casting mold upper table
Face simultaneously makes cup of the endless metal pipe ring on casting mold.Wherein, annular metallic conduit and gas storage are connected using flexible conduit
Tank can be beneficial to endless metal pipeline and casting mold upper surface flat contact.Before pouring molten steel, control valve is opened logical to flexible conduit
CO2Gas, CO2Gas is exported and forms cylinder on endless metal pipeline by the upper venthole of endless metal pipeline upper surface
Shape CO2Air curtain, thus defines a CO about and over cup2Gas special protection area, in cast, can have
Effect reduces molten steel and other air contacts, it is to avoid molten steel oxidation, significantly plays the protective effect to molten steel.More it is remote from annular gold
Metal conduit is bigger with the distribution density of venthole on the endless metal pipeline upper surface of the junction of flexible conduit, so that tubular
CO2Everywhere air pressure is uniform for air curtain circumference, to overcome the junction in circulating line away from endless metal pipeline and flexible conduit
CO2 pressure is less to cause tubular CO2The air curtain circumference uniform uneven problem of air pressure everywhere.Upper venthole can using identical aperture
Make the processing of venthole relatively easy.
Preferably, the endless metal insides of pipes surface layout has some interior outlet inside and outside connection metallic conduit
Hole, some interior ventholes are arranged in a ring along the inner surface of endless metal pipeline.On endless metal insides of pipes surface
Venthole in arranging, interior venthole CO out2Gas is then by columnar CO2Air is expelled and by CO in air curtain2Occupy the sky
Between, so as to further improve the effect of molten steel oxidation when the present invention prevents from pouring into a mould.
Preferably, the aperture of some interior ventholes is identical, interior venthole is on endless metal insides of pipes surface
Distribution density plays the connection away from endless metal pipeline and flexible conduit from the junction of endless metal pipeline and flexible conduit
The direction at place gradually increases.More it is remote from the endless metal insides of pipes table of endless metal pipeline and the junction of flexible conduit
The distribution density of the interior venthole in face is bigger, so that CO2Everywhere air pressure is uniform in the space that air curtain is surrounded, to overcome ring pipe
Away from endless metal pipeline and the CO of the junction of flexible conduit in road2Pressure is less to cause tubular CO2Air curtain circumference air pressure everywhere
Uniform uneven problem.Interior venthole can make the processing of upper venthole relatively easy using identical aperture.
Preferably, the downside surface of endless metal pipeline planar structure in a ring, so as to endless metal pipe can be made
Road downside surface energy casting mold upper surface flat contact, avoids as far as possible CO2Gas is from endless metal pipeline downside surface and casting mold
Gap leakage between upper surface falls, the effect of molten steel oxidation when preventing from pouring into a mould with raising.
Preferably, the annular diameters of the endless metal pipeline are 300mm-500mm, endless metal pipeline and cup
Coaxially.The annular diameters of the annular metallic conduit of rationally control, can make tubular CO2Air curtain surrounds a rational space, as far as possible
Discharge tubular CO in ground2Air curtain surround in the space of except CO2Remaining gas outside gas, it is ensured that steel when preventing from pouring into a mould
The effect of liquid oxidation.
CO is utilized using the present invention2The side of molten steel oxidation when the device of molten steel oxidation prevents from pouring into a mould when gas prevents from pouring into a mould
Method, it is characterised in that comprise the steps：
1）, on the cast gate of casting mold place cup, endless metal pipeline is placed on into casting mold upper surface and annular gold is made
Metal conduit is around cup；
2）, open control valve, the CO in air accumulator2Gas is entered in endless metal pipeline and from upper by flexible conduit
Venthole out, CO2Gas forms columnar CO above endless metal pipeline2Air curtain；
3）, open control valve after after -30 seconds 15 seconds by steel night wrap base opening alignment cup, make molten steel pass through cup stream
Enter in casting mold until molten steel fills casting mold and removes out molten steel bag；
4）, remove after molten steel bag -30 seconds 15 seconds closing control valves and remove endless metal pipeline.
CO is utilized using the present invention2Molten steel oxidation is another when the device of molten steel oxidation prevents from pouring into a mould when gas prevents from pouring into a mould
Method, it is characterised in that comprise the steps：
1）, on the cast gate of casting mold place cup, endless metal pipeline is placed on into casting mold upper surface and annular gold is made
Metal conduit is around cup；
2）, open control valve, the CO in air accumulator2Gas is entered in endless metal pipeline and from upper by flexible conduit
Venthole and interior venthole out, upper venthole CO out2Gas forms columnar CO above endless metal pipeline2Gas
Curtain, interior venthole CO out2Gas is then by columnar CO2Air is expelled and by CO in air curtain2Occupy the space；
3）, open control valve after after -30 seconds 15 seconds by steel night wrap base opening alignment cup, make molten steel pass through cup stream
Enter in casting mold until molten steel fills casting mold and removes out molten steel bag；
4）, remove after molten steel bag -30 seconds 15 seconds closing control valves and remove endless metal pipeline.
Therefore, the present invention has and is effectively reduced molten steel and other air contacts, it is to avoid molten steel oxidation, significantly plays to steel
The features such as protective effect of water.
Description of the drawings
Fig. 1 is a kind of structural representation of the present invention；
Fig. 2 is a kind of structural representation of endless metal pipeline of the present invention；
Fig. 3 is another kind of structural representation of endless metal pipeline of the present invention；
Fig. 4 is a kind of cross-sectional structure schematic diagram of endless metal pipeline of the present invention.
Specific embodiment
Below by embodiment, and accompanying drawing is combined, technical scheme is described in further detail.
Embodiment 1：As shown in figure 1, using CO2The device of molten steel oxidation when gas prevents from pouring into a mould, including casting mold 1, casting mold
Upper surface 2 is provided with cup 3 and profile endless metal pipeline 4 in a ring, and endless metal pipeline 4 is around cup 3, annular
Control valve 7 is connected and is provided with flexible conduit between metallic conduit 4 and air accumulator 5 by flexible conduit 6.As shown in Fig. 2
The upper surface of endless metal pipeline 4 be disposed with inside and outside the annular metallic conduit of connection it is multiple on venthole 8, multiple upper ventholes
8 arrange in a ring along the upper surface of endless metal pipeline.The aperture of upper venthole 8 is identical, and upper venthole is in endless metal pipeline
The distribution density of upper surface is played away from endless metal pipeline and flexibility from the junction of endless metal pipeline 4 and flexible conduit 6
The direction of the junction of pipeline gradually increases.The annular diameters M of endless metal pipeline 4 be 400mm, endless metal pipeline 4 with pour
Cup 3 is coaxial.
The method and step of molten steel oxidation is as follows when preventing from pouring into a mould using said apparatus：
1）, as shown in figure 1, on the cast gate of casting mold 1 place cup 3, endless metal pipeline 3 is placed on into casting mold upper table
Face 2 simultaneously makes endless metal pipeline 4 around cup 3；
2）, open control valve 7, the CO in air accumulator 52Gas is entered in endless metal pipeline 4 simultaneously by flexible conduit
From upper venthole 8 out, CO2Gas forms columnar CO above endless metal pipeline2Air curtain；
3）, open and the base opening of molten steel bag 9 is directed at into cup 3 after 20 seconds after control valve, molten steel 10 is flowed by cup 3
Enter to until molten steel fills casting mold and removes out molten steel bag, the molten steel stream 12 flowed out from molten steel bag base opening 11 is by annular gold in casting mold 1
The tubular CO2 air curtain that metal conduit 4 is produced is surrounded；
4）, remove after molten steel bag -30 seconds 15 seconds closing control valves and remove endless metal pipeline.
Embodiment 2：As shown in figure 1, using CO2The device of molten steel oxidation when gas prevents from pouring into a mould, including casting mold 1, casting mold
Upper surface 2 is provided with cup 3 and profile endless metal pipeline 4 in a ring, and endless metal pipeline 4 is around cup 3, annular
Control valve 7 is connected and is provided with flexible conduit between metallic conduit 4 and air accumulator 5 by flexible conduit 6.As shown in figure 3,
The upper surface of endless metal pipeline 4 be disposed with inside and outside the annular metallic conduit of connection it is multiple on venthole 8, multiple upper ventholes
8 arrange in a ring along the upper surface of endless metal pipeline.The aperture of upper venthole 8 is identical, and upper venthole is in endless metal pipeline
The distribution density of upper surface is played away from endless metal pipeline and flexibility from the junction of endless metal pipeline 4 and flexible conduit 6
The direction of the junction of pipeline gradually increases.The annular diameters M of endless metal pipeline 4 be 500mm, endless metal pipeline 4 with pour
Cup 3 is coaxial.Endless metal insides of pipes surface layout have connection metallic conduit inside and outside multiple interior venthole 13, it is multiple in go out
Pore is arranged in a ring along the inner surface of endless metal pipeline.The mutual aperture of interior venthole 13 is identical, and interior venthole exists
The distribution density on endless metal insides of pipes surface is played away from annular gold from the junction of endless metal pipeline and flexible conduit
Metal conduit gradually increases with the direction of the junction of flexible conduit.As shown in figure 4, the downside surface 14 of endless metal pipeline 4 is in
Annular plane structure.
The method and step of molten steel oxidation is as follows when preventing from pouring into a mould using the device of embodiment 2：
1）, as shown in figure 1, on the cast gate of casting mold 1 place cup 3, endless metal pipeline 3 is placed on into casting mold upper table
Face 2 simultaneously makes endless metal pipeline 4 around cup 3；
2）, open control valve 7, the CO in air accumulator 52Gas is entered in endless metal pipeline 4 simultaneously by flexible conduit
From upper venthole 8 and interior venthole 13 out, upper venthole CO out2Gas forms cylindrical shape above endless metal pipeline
CO2Air curtain, interior venthole CO out2Gas is then by columnar CO2Air is expelled and by CO in air curtain2Occupy the space；
3）, open and the base opening of molten steel bag 9 is directed at into cup 3 after 20 seconds after control valve, molten steel 10 is flowed by cup 3
Enter to until molten steel fills casting mold and removes out molten steel bag, the molten steel stream 12 flowed out from molten steel bag base opening 11 is by annular gold in casting mold 1
Tubular CO that metal conduit 4 is produced2Air curtain is surrounded；
4）, remove after molten steel bag -30 seconds 15 seconds closing control valves and remove endless metal pipeline.
Claims (7)
1. one kind utilizes CO2The device of molten steel oxidation when gas prevents from pouring into a mould, including casting mold, it is characterised in that：Casting mold upper surface sets
Cup and profile endless metal pipeline in a ring is equipped with, endless metal pipe ring is around cup, endless metal pipeline and storage
Connected by flexible conduit between gas tank and in flexible conduit be provided with control valve, at least in the upper surface of endless metal pipeline
The some upper venthole being disposed with inside and outside the annular metallic conduit of connection, upper table of some upper ventholes along endless metal pipeline
Face arranges that in a ring the aperture of some upper ventholes is identical, and upper venthole is close in the distribution of endless metal pipeline upper surface
Spend from the junction of endless metal pipeline and flexible conduit and play the side of the junction away from endless metal pipeline Yu flexible conduit
To gradually increasing.
2. utilization CO according to claim 12The device of molten steel oxidation when gas prevents from pouring into a mould, it is characterised in that the ring
Shape metallic conduit inner surface is disposed with some interior venthole inside and outside connection metallic conduit, and some interior ventholes are along annular
The inner surface of metallic conduit is arranged in a ring.
3. utilization CO according to claim 22The device of molten steel oxidation when gas prevents from pouring into a mould, it is characterised in that if described
The aperture of venthole is identical in dry, interior venthole endless metal insides of pipes surface distribution density from endless metal pipeline with
Play and gradually increase with the direction of the junction of flexible conduit away from endless metal pipeline in the junction of flexible conduit.
4. utilization CO according to claim 12The device of molten steel oxidation when gas prevents from pouring into a mould, it is characterised in that the ring
The downside surface of shape metallic conduit planar structure in a ring.
5. utilization CO according to claim 12The device of molten steel oxidation when gas prevents from pouring into a mould, it is characterised in that the ring
The annular diameters of shape metallic conduit are 300mm-500mm, and endless metal pipeline is coaxial with cup.
6. the method for molten steel oxidation when preventing from pouring into a mould using any one claim described device of claim 1,4,5, it is special
Levy is to comprise the steps：
1）, on the cast gate of casting mold place cup, endless metal pipeline is placed on into casting mold upper surface and endless metal pipe is made
Road is around cup；
2）, open control valve, the CO in air accumulator2Gas is entered in endless metal pipeline and from upper outlet by flexible conduit
Hole out, CO2Gas forms columnar CO above endless metal pipeline2Air curtain；
3）, open and the base opening of molten steel bag is directed at into cup after -30 seconds 15 seconds after control valve, molten steel is flowed into by cup
Until molten steel fills casting mold and removes molten steel bag in casting mold；
4）, remove after molten steel bag -30 seconds 15 seconds closing control valves and remove endless metal pipeline.
7. the method for molten steel oxidation, its feature when preventing from pouring into a mould using claim 2-3 any one claim described device
It is to comprise the steps：
1）, on the cast gate of casting mold place cup, endless metal pipeline is placed on into casting mold upper surface and endless metal pipe is made
Road is around cup；
2）, open control valve, the CO in air accumulator2Gas is entered in endless metal pipeline and from upper outlet by flexible conduit
Hole and interior venthole out, from upper venthole CO out2Gas forms columnar CO above endless metal pipeline2Air curtain,
Interior venthole CO out2Gas is then by columnar CO2Air is expelled and by CO in air curtain2Occupy the space；
3）, open and the base opening of molten steel bag is directed at into cup after -30 seconds 15 seconds after control valve, molten steel is flowed into by cup
Until molten steel fills casting mold and removes molten steel bag in casting mold；
4）, remove after molten steel bag -30 seconds 15 seconds closing control valves and remove endless metal pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785786.2A CN104525866B (en) | 2014-12-18 | 2014-12-18 | Device and method for preventing molten steel oxidation during pouring by utilizing CO2 gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785786.2A CN104525866B (en) | 2014-12-18 | 2014-12-18 | Device and method for preventing molten steel oxidation during pouring by utilizing CO2 gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104525866A CN104525866A (en) | 2015-04-22 |
| CN104525866B true CN104525866B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410785786.2A Active CN104525866B (en) | 2014-12-18 | 2014-12-18 | Device and method for preventing molten steel oxidation during pouring by utilizing CO2 gas |
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| CN108326260B (en) * | 2018-01-26 | 2019-12-03 | 济南韶欣耐磨材料有限公司 | A kind of manufacturing method of wear-resisting hammer head of hammer crusher |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0919760A (en) * | 1995-07-06 | 1997-01-21 | Daido Steel Co Ltd | Ar blow-off ring and method for casting molten metal using it |
| CN2579558Y (en) * | 2002-08-08 | 2003-10-15 | 宝钢集团上海五钢有限公司 | Full closed argon gas protective casting device for molten steel die casting |
| CN2717576Y (en) * | 2004-03-29 | 2005-08-17 | 宝山钢铁股份有限公司 | Mold-filling argon protecting device |
| CN201470880U (en) * | 2009-08-28 | 2010-05-19 | 宝山钢铁股份有限公司 | Argon shielding device for casting of die casting |
| CN102029385B (en) * | 2009-09-26 | 2013-03-20 | 大冶特殊钢股份有限公司 | Casting process for casting protection of high-quality special steel mold |
| CN202062057U (en) * | 2011-01-04 | 2011-12-07 | 马鞍山钢铁股份有限公司 | Argon protecting device used for steel ingot pouring |
| CN202239524U (en) * | 2011-09-23 | 2012-05-30 | 鞍钢重型机械有限责任公司 | Argon protection device for casting steel ingots |
| CN102335740A (en) * | 2011-09-28 | 2012-02-01 | 苏州宝蠡耐火材料有限公司 | Die-casting argon-blowing protection device |
| CN104107887B (en) * | 2013-04-19 | 2016-08-03 | 宝钢特钢有限公司 | A kind of molding cast beam protection device and method |
| CN203380338U (en) * | 2013-07-30 | 2014-01-08 | 王泽明 | Argon shielding device for liquid steel die casting |
| CN103480834A (en) * | 2013-09-27 | 2014-01-01 | 中核苏阀横店机械有限公司 | Device and method for utilizing argon flow to protect molten steel injection flow |
| CN204430191U (en) * | 2014-12-18 | 2015-07-01 | 中核苏阀横店机械有限公司 | Utilize CO 2the device of molten steel oxidation when gas prevents from pouring into a mould |
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Address after: 322118 Zhejiang city of Jinhua province Dongyang city Hengdian Branch Road Electronic Industrial Park No. 33 Patentee after: Zhejiang innuovo Equipment Manufacturing Co., Ltd. Address before: 322118 Zhejiang city of Jinhua province Dongyang city Hengdian Branch Road Electronic Industrial Park No. 33 Patentee before: In SUFA Machinery Co., Ltd. Hengdian |