CN204430191U - Utilize CO 2the device of molten steel oxidation when gas prevents from pouring into a mould - Google Patents
Utilize CO 2the device of molten steel oxidation when gas prevents from pouring into a mould Download PDFInfo
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- CN204430191U CN204430191U CN201420802944.6U CN201420802944U CN204430191U CN 204430191 U CN204430191 U CN 204430191U CN 201420802944 U CN201420802944 U CN 201420802944U CN 204430191 U CN204430191 U CN 204430191U
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- endless metal
- molten steel
- metal pipeline
- pouring
- mould
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Abstract
The utility model relates to and utilizes CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, belongs to the technical field of molten steel cast.Utilize CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, comprise casting mold, casting mold upper surface is provided with cup and the ringwise endless metal pipeline of profile, endless metal pipe ring is around cup, endless metal pipeline is communicated with by flexible conduit with between air accumulator and is provided with control valve in flexible conduit, at least be furnished with venthole on to be communicated with inside and outside annular metallic conduit some at the upper surface of endless metal pipeline, the upper surface of described some upper ventholes annularly metallic conduit is arranged ringwise.The utility model has and effectively can reduce molten steel and contact with other air, avoids molten steel oxidation, significantly plays features such as the protective effects of molten steel.
Description
Technical field
The utility model relates to and utilizes CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, belongs to the technical field of molten steel cast.
Background technology
Under the condition of market economy, user's request is that constantly change improves, concerning present casting industry, user requires more and more higher to the degree of purity of material, make the field trash needing as far as possible to reduce in molten steel in fusion process, prevent molten steel from following air to contact the oxide inclusion produced at casting process brings in foundry goods simultaneously as far as possible, and with regard to making to prevent molten steel in casting process, with air contact, the measure of oxidation is very important for this.
Summary of the invention
Produce with air contact the problem that oxidation causes oxide inclusion in order to solve molten steel in casting and pouring process, the utility model provides one and utilizes CO
2gas prevents the devices and methods therefor that in casting process, molten steel contacts with air.
Above-mentioned technical purpose of the present utility model mainly solves by the following technical programs: utilize CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, comprise casting mold, casting mold upper surface is provided with cup and the ringwise endless metal pipeline of profile, endless metal pipe ring is around cup, endless metal pipeline is communicated with by flexible conduit with between air accumulator and is provided with control valve in flexible conduit, at least be furnished with venthole on to be communicated with inside and outside annular metallic conduit some at the upper surface of endless metal pipeline, the upper surface of described some upper ventholes annularly metallic conduit is arranged ringwise.Endless metal pipeline is placed on casting mold upper surface and makes the cup of endless metal pipe ring on casting mold.Wherein, flexible conduit is adopted to connect annular metallic conduit and air accumulator can be beneficial to endless metal pipeline and casting mold upper surface flat contact.Before pouring molten steel, open control valve and lead to CO to flexible conduit
2gas, CO
2gas is exported by the upper venthole of endless metal pipeline upper surface and formed tubular CO on endless metal pipeline
2air curtain, because CO
2specific gravity of gas is larger than other air, so just around cup and above define a CO
2gas special protection area, when pouring into a mould, effectively can reduce molten steel and contacting with other air, avoiding molten steel oxidation, significantly play the protective effect to molten steel.
As preferably, the aperture of described some upper ventholes is identical, the direction that upper venthole to play from the junction of endless metal pipeline and flexible conduit away from the junction of endless metal pipeline and flexible conduit in the distribution density of endless metal pipeline upper surface increases gradually, namely larger away from the distribution density of venthole on the endless metal pipeline upper surface of the junction of endless metal pipeline and flexible conduit, thus make tubular CO
2air curtain circumference everywhere air pressure is even, to overcome the CO away from the junction of endless metal pipeline and flexible conduit in circulating line
2pressure is less causes tubular CO
2the air curtain circumference problem that air pressure is evenly uneven everywhere.Upper venthole adopts identical aperture that the processing of venthole can be made relatively simple.
As preferably, described endless metal insides of pipes surface is furnished with the some interior venthole be communicated with inside and outside metallic conduit, and the inner surface of described some interior ventholes annularly metallic conduit is arranged ringwise.Interior venthole is set on endless metal insides of pipes surface, interior venthole CO out
2gas is then by columnar CO
2in air curtain, air expels and by CO
2occupy this space, thus improve the effect of molten steel oxidation when the utility model prevents from pouring into a mould further.
As preferably, the aperture of described some interior ventholes is identical, and the direction that the distribution density of interior venthole on endless metal insides of pipes surface plays from the junction of endless metal pipeline and flexible conduit away from the junction of endless metal pipeline and flexible conduit increases gradually.Namely larger away from the distribution density of venthole in the endless metal insides of pipes surface of the junction of endless metal pipeline and flexible conduit, thus make CO
2in the space that air curtain surrounds, air pressure is even everywhere, to overcome the CO away from the junction of endless metal pipeline and flexible conduit in circulating line
2pressure is less causes tubular CO
2the air curtain circumference problem that air pressure is evenly uneven everywhere.Interior venthole adopts identical aperture that the processing of venthole can be made relatively simple.
As preferably, the downside surface planar structure ringwise of described endless metal pipeline, thus endless metal pipeline downside surface energy casting mold upper surface flat contact can be made, avoid CO as far as possible
2gas falls from the gap leakage between endless metal pipeline downside surface and casting mold upper surface, the effect of molten steel oxidation when preventing from pouring into a mould to improve.
As preferably, the annular diameters of described endless metal pipeline is 300mm-500mm, and endless metal pipeline is coaxial with cup.The annular diameters of conservative control endless metal pipeline, can make tubular CO
2air curtain surrounds a rational space, discharges tubular CO as much as possible
2air curtain surround in the space of except CO
2remaining gas outside gas, ensure that the effect of molten steel oxidation when preventing from pouring into a mould.
Therefore, the utility model has and effectively can reduce molten steel and contact with other air, avoids molten steel oxidation, significantly plays features such as the protective effects of molten steel.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is a kind of structural representation of the utility model endless metal pipeline;
Fig. 3 is the another kind of structural representation of the utility model endless metal pipeline;
Fig. 4 is a kind of cross-sectional structure schematic diagram of the utility model endless metal pipeline.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: as shown in Figure 1, utilizes CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, comprise casting mold 1, casting mold upper surface 2 is provided with cup 3 and the ringwise endless metal pipeline 4 of profile, endless metal pipeline 4, around cup 3, is communicated with by flexible conduit 6 between endless metal pipeline 4 with air accumulator 5 and in flexible conduit, is provided with control valve 7.As shown in Figure 2, be furnished with venthole 8 on to be communicated with inside and outside annular metallic conduit multiple at the upper surface of endless metal pipeline 4, the upper surface of multiple upper venthole 8 annularly metallic conduit is arranged ringwise.The aperture of upper venthole 8 is identical, and the direction that upper venthole to play from endless metal pipeline 4 and the junction of flexible conduit 6 away from the junction of endless metal pipeline and flexible conduit in the distribution density of endless metal pipeline upper surface increases gradually.The annular diameters M of endless metal pipeline 4 is 400mm, and endless metal pipeline 4 is coaxial with cup 3.
When adopting said apparatus to prevent from pouring into a mould, the method step of molten steel oxidation is as follows:
1), as shown in Figure 1, cup 3 placed by the cast gate of casting mold 1, endless metal pipeline 3 is placed on casting mold upper surface 2 and makes endless metal pipeline 4 around cup 3;
2), control valve 7 is opened, the CO in air accumulator 5
2gas to be entered in endless metal pipeline 4 by flexible conduit and from upper venthole 8 out, CO
2gas forms columnar CO above endless metal pipeline
2air curtain;
3) after 20 seconds, the end mouth of molten steel bag 9 is aimed at cup 3 after, opening control valve, molten steel 10 is made to flow into until casting mold filled by molten steel remove out molten steel bag in casting mold 1 by cup 3, the tubular CO that the molten steel stream 12 that mouth 11 flows out at the bottom of molten steel bag is produced by endless metal pipeline 4
2air curtain surrounds;
4) 15 seconds-30 seconds closed control valves after, removing molten steel bag also remove endless metal pipeline.
Embodiment 2: as shown in Figure 1, utilizes CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, comprise casting mold 1, casting mold upper surface 2 is provided with cup 3 and the ringwise endless metal pipeline 4 of profile, endless metal pipeline 4, around cup 3, is communicated with by flexible conduit 6 between endless metal pipeline 4 with air accumulator 5 and in flexible conduit, is provided with control valve 7.As shown in Figure 3, be furnished with venthole 8 on to be communicated with inside and outside annular metallic conduit multiple at the upper surface of endless metal pipeline 4, the upper surface of multiple upper venthole 8 annularly metallic conduit is arranged ringwise.The aperture of upper venthole 8 is identical, and the direction that upper venthole to play from endless metal pipeline 4 and the junction of flexible conduit 6 away from the junction of endless metal pipeline and flexible conduit in the distribution density of endless metal pipeline upper surface increases gradually.The annular diameters M of endless metal pipeline 4 is 500mm, and endless metal pipeline 4 is coaxial with cup 3.Endless metal insides of pipes surface is furnished with the multiple interior venthole 13 be communicated with inside and outside metallic conduit, and the inner surface of multiple interior venthole annularly metallic conduit is arranged ringwise.The mutual aperture of interior venthole 13 is identical, and the direction that the distribution density of interior venthole on endless metal insides of pipes surface plays from the junction of endless metal pipeline and flexible conduit away from the junction of endless metal pipeline and flexible conduit increases gradually.As shown in Figure 4, downside surface 14 planar structure ringwise of endless metal pipeline 4.
When adopting embodiment 2 device to prevent from pouring into a mould, the method step of molten steel oxidation is as follows:
1), as shown in Figure 1, cup 3 placed by the cast gate of casting mold 1, endless metal pipeline 3 is placed on casting mold upper surface 2 and makes endless metal pipeline 4 around cup 3;
2), control valve 7 is opened, the CO in air accumulator 5
2gas to be entered in endless metal pipeline 4 by flexible conduit and from upper venthole 8 and interior venthole 13 out, upper venthole CO out
2gas forms columnar CO above endless metal pipeline
2air curtain, interior venthole CO out
2gas is then by columnar CO
2in air curtain, air expels and by CO
2occupy this space;
3) after 20 seconds, the end mouth of molten steel bag 9 is aimed at cup 3 after, opening control valve, molten steel 10 is made to flow into until casting mold filled by molten steel remove out molten steel bag in casting mold 1 by cup 3, the tubular CO that the molten steel stream 12 that mouth 11 flows out at the bottom of molten steel bag is produced by endless metal pipeline 4
2air curtain surrounds;
4) 15 seconds-30 seconds closed control valves after, removing molten steel bag also remove endless metal pipeline.
Claims (6)
1. one kind utilizes CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, comprise casting mold, it is characterized in that: casting mold upper surface is provided with cup and the ringwise endless metal pipeline of profile, endless metal pipe ring is around cup, endless metal pipeline is communicated with by flexible conduit with between air accumulator and is provided with control valve in flexible conduit, at least be furnished with venthole on to be communicated with inside and outside annular metallic conduit some at the upper surface of endless metal pipeline, the upper surface of described some upper ventholes annularly metallic conduit is arranged ringwise.
2. according to claim 1ly utilize CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, it is characterized in that the aperture of described some upper ventholes is identical, the direction that upper venthole to play from the junction of endless metal pipeline and flexible conduit away from the junction of endless metal pipeline and flexible conduit in the distribution density of endless metal pipeline upper surface increases gradually.
3. according to claim 1 and 2ly utilize CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, is characterized in that described endless metal insides of pipes surface is furnished with the some interior venthole be communicated with inside and outside metallic conduit, and the inner surface of described some interior ventholes annularly metallic conduit is arranged ringwise.
4. according to claim 3ly utilize CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, it is characterized in that the aperture of described some interior ventholes is identical, the direction that the distribution density of interior venthole on endless metal insides of pipes surface plays from the junction of endless metal pipeline and flexible conduit away from the junction of endless metal pipeline and flexible conduit increases gradually.
5. according to claim 1 and 2ly utilize CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, is characterized in that the downside surface planar structure ringwise of described endless metal pipeline.
6. according to claim 1 and 2ly utilize CO
2the device of molten steel oxidation when gas prevents from pouring into a mould, it is characterized in that the annular diameters of described endless metal pipeline is 300mm-500mm, endless metal pipeline is coaxial with cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420802944.6U CN204430191U (en) | 2014-12-18 | 2014-12-18 | Utilize CO 2the device of molten steel oxidation when gas prevents from pouring into a mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420802944.6U CN204430191U (en) | 2014-12-18 | 2014-12-18 | Utilize CO 2the device of molten steel oxidation when gas prevents from pouring into a mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204430191U true CN204430191U (en) | 2015-07-01 |
Family
ID=53598111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420802944.6U Withdrawn - After Issue CN204430191U (en) | 2014-12-18 | 2014-12-18 | Utilize CO 2the device of molten steel oxidation when gas prevents from pouring into a mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204430191U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525866A (en) * | 2014-12-18 | 2015-04-22 | 中核苏阀横店机械有限公司 | Device and method for preventing molten steel oxidation during pouring by utilizing CO2 gas |
-
2014
- 2014-12-18 CN CN201420802944.6U patent/CN204430191U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525866A (en) * | 2014-12-18 | 2015-04-22 | 中核苏阀横店机械有限公司 | Device and method for preventing molten steel oxidation during pouring by utilizing CO2 gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150701 Effective date of abandoning: 20170517 |
|
| AV01 | Patent right actively abandoned |