CN109482825A - A kind of lower casting device - Google Patents
A kind of lower casting device Download PDFInfo
- Publication number
- CN109482825A CN109482825A CN201811645577.2A CN201811645577A CN109482825A CN 109482825 A CN109482825 A CN 109482825A CN 201811645577 A CN201811645577 A CN 201811645577A CN 109482825 A CN109482825 A CN 109482825A
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- CN
- China
- Prior art keywords
- feed trumpet
- brick
- molten steel
- slit
- supply 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/06—Ingot moulds or their manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D7/00—Casting ingots, e.g. from ferrous metals
- B22D7/12—Appurtenances, e.g. for sintering, for preventing splashing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention, which provides, is equipped with slit as gas chamber in a kind of lower casting device, including feed trumpet, cross gate, upper running channel, mold, fire resisting centre runner brick, fire resisting stream steel tail brick, feed trumpet brick.Slit is equipped in feed trumpet brick as gas chamber, it is supplied with air supply pipe into slit, several air vents are opened in feed trumpet brick wall of the slit close to molten steel side, under the action of buoyancy, the gas being passed through in feed trumpet floats in molten steel in feed trumpet and stirs molten steel, bubble can capture field trash and absorb pernicious gas in the process, floating is moved simultaneously, achieve the purpose that removal of inclusions and pernicious gas, the degree of purity of molten steel is further improved in this way, to produce the steel ingot of more high quality.
Description
Technical field
The present invention relates to iron and steel casting technical fields, more particularly to a kind of lower casting device.
Background technique
Bottom casting is a kind of process that should be cast extensively in steel ingot, when using bottom casting, it is desired to molten steel successively from
Ladle enters feed trumpet inflow cross gate and upper running channel finally enters in mold, and steel ingot is frozen into mold.
But bottom casting still has following problems in actual application:
(1) after the molten steel in ladle enters feed trumpet, the axial flow velocity of molten steel is very big, and the fire resisting of feed trumpet brick bottom
Centre runner brick can be washed away and be corroded by the powerful of molten steel, and the external non-metallic inclusion that will lead in molten steel increases, thus to steel
The cleanliness of liquid seriously affects；To the interior life of generation and external field trash currently without any processing during lower casting
Method；
(2) there is in feed trumpet very big flow velocity due to molten steel, it can be from feed trumpet in the casting process of molten steel
Air is involved at horn mouth, to form numerous air-bubble, these bubbles can be because of buoyancy with molten steel fast downlink, most bubbles
And taper off downlink and transfer to start to float, and the ascent rate of some minute bubbles is due to being lower than molten steel downlink flow velocity, meeting quilt
Molten steel is swept along into can not complete in cross gate to float in feed trumpet, and is entered in mold further with molten steel, thus
The risk for causing steel billet gas hole defect occur increases.In addition, the air bubble for being involved in molten steel also results in molten steel secondary oxidation,
The performance of steel billet product can be reduced；At present also without any method for reducing these minute bubbles in casting process；
(3) there are some pernicious gases, such as H in molten steel2、N2Deng.
Summary of the invention
According to technical problem set forth above, and a kind of lower casting device is provided, by being blown into gas into the molten steel of feed trumpet
The mode of body removes the field trash in molten steel.
The collision between bubble and field trash is effectively increased by this blowing method, capture is difficult to float small
Bubble achievees the purpose that removal of inclusions.The quality of steel ingot is just improved in this way.In addition, this blowing method also uniform molten steel
Temperature, ingredient, improve the benefit of the mobility status of molten steel.
The technological means that the present invention uses is as follows:
A kind of lower casting device characterized by comprising feed trumpet, cross gate, upper running channel, mold and air supply pipe；Feed trumpet
Outer wall is metal feed trumpet, and inner wall is feed trumpet brick.
It is molten steel casting horn mouth at the top of feed trumpet, feed trumpet brick bottom is provided with fire resisting centre runner brick, by feed trumpet
Molten steel distributes to several cross gates, and cross gate is horizontally disposed, and cross gate liquid feeding end is connected by fire resisting centre runner brick with feed trumpet,
Cross gate outlet end is provided with fire resisting stream steel tail brick；
Upper running channel is vertically arranged, and upper running channel bottom end is connected by fire resisting stream steel tail brick with cross gate, at the top of upper running channel with
The molten steel entrance of cast base is connected；
Slit gas chamber is equipped in feed trumpet brick；Slit gas chamber is connected to air supply pipe, i.e., air supply pipe can be blown into slit
Enter gas, opens several air vents close to the side of molten steel in slit gas chamber, blow air into feed trumpet molten steel.
Further,
Make the feed trumpet brick wall air brick of close molten steel side in slit gas chamber and/or opens up air vent.
Further,
Feed trumpet outer wall is metal feed trumpet, and inner wall is feed trumpet brick；
It is provided with gap between metal feed trumpet and feed trumpet brick, and fills sand in gap.
Further,
Air supply pipe therefrom injecting pipe brick outer wall draw air supply pipe therefrom in the sand between injecting pipe brick and metal feed trumpet upwards
Extend, is drawn at feed trumpet horn mouth.
Further,
Air supply pipe institute's supplied gas is argon gas.
Further,
When metal feed trumpet length is more than 3200mm, using upper and lower two parts fission assembling structure.
The present invention by adopting the above technical scheme, there are three types of plenum systems；First is that air supply pipe passes through the hole of metal feed trumpet
Gas is fed to the slit gas chamber of feed trumpet brick by the hole on the feed trumpet brick wall on the outside of sand and slit；Second is that therefrom infusing
Pipe brick outer wall is drawn air supply pipe and is therefrom upwardly extended in the sand between injecting pipe brick and metal feed trumpet, at feed trumpet horn mouth
It draws；Third is that passing through metal feed trumpet or more two parts (feed trumpet length is more than that 3200mm is just divided into two parts) even with air supply pipe
It meets place and reaches feed trumpet brick, directly blow air into molten steel.
Beneficial effects of the present invention:
Compared with prior art, the present invention in the case where not reducing feed trumpet entrance molten steel flow velocity, in feed trumpet brick
It is equipped with slit in side wall as gas chamber, is supplied with air supply pipe into slit, in slit close to the feed trumpet brick wall of the side of molten steel
Several air vents are opened, or make feed trumpet brick wall air brick of the slit close to molten steel side, blow air into feed trumpet steel
In liquid.Under the action of buoyancy, the gas being passed through in feed trumpet floats in molten steel in feed trumpet and stirs molten steel, in this process
Middle bubble can capture field trash and absorb pernicious gas, while move floating, achieve the purpose that removal of inclusions and pernicious gas,
The degree of purity of molten steel is further improved in this way, to produce the steel ingot of more high quality.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural diagram of the present invention.
Fig. 2-1 is that the present invention uses the enlarged drawing that position is supplied in when slit gas chamber.
Fig. 2-2 is that the present invention uses the enlarged drawing that position is supplied in when air brick.
Fig. 3-1 is the present invention using the enlarged drawing for supplying position when drawing air supply pipe at horn mouth.
The enlarged drawing at position is supplied in when Fig. 3-2 replaces with air brick for slit gas chamber in Fig. 3-1.
Fig. 4 is the top view of metal feed trumpet of the present invention, sand, feed trumpet brick, air supply pipe and gas chamber.
Fig. 5 is structural schematic diagram when feed trumpet of the present invention uses splicing construction.
Fig. 5-1 is the structural schematic diagram of the feed trumpet superstructure in Fig. 5.
Fig. 5-2 is the structural schematic diagram of the feed trumpet substructure in Fig. 5.
In figure: 1 is horn mouth, and 2 be feed trumpet brick, and 3 be sand, and 4 be metal feed trumpet, and 5 be cross gate, and 6 is in fire resistings
Heart brick, 7 be mold, and 8 be fire resisting centre runner brick, and 9 be stream steel tail brick, and 10 be slit；11 be air supply pipe；12 be air brick, and 13 be confession
Stomata.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.It is real to the description of at least one exemplary embodiment below
It is merely illustrative on border, never as to the present invention and its application or any restrictions used.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be clear that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.Technology known for person of ordinary skill in the relevant, side
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part of book.In shown here and discussion all examples, appointing should be construed as merely illustratively to occurrence, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need that it is further discussed in figure.
In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical,
Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate that
It must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manage
Solution is limiting the scope of the invention: the noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under its device or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for
Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of invention protection scope.
As shown in Figure 1, Figure 2 shown in-1 and Fig. 2-2, the present invention provides a kind of lower casting devices, including feed trumpet brick 2, cross gate
5, upper running channel 6 and mold 7；It is horn mouth 1 at the top of the feed trumpet brick 2,2 bottom of feed trumpet brick is provided with fire resisting centre runner brick 8；
The cross gate 5 is horizontally disposed, and 5 liquid feeding end of cross gate is connected by fire resisting centre runner brick 8 with feed trumpet brick 2, goes out in cross gate 5
Liquid end is provided with fire resisting stream steel tail brick 9；The upper running channel 6 is vertically arranged, and upper 6 bottom end of running channel passes through fire resisting stream steel tail brick 9 and cross
Running channel 5 is connected, and upper 6 top of running channel is connected with the molten steel entrance of 7 bottom of mold；Its main feature is that being set in the feed trumpet brick
Slit 10 is set, gas is blown into molten steel by air supply pipe, Fig. 2-1 and Fig. 2-2 indicate a kind of showing for inserted mode of air supply pipe
It is intended to；Fig. 3 (and Fig. 3-1 and Fig. 3-2) is another inserted mode figure of air supply pipe, is directly blowed air by gas supply narrow
In seam；The mode directly blown with air supply pipe is illustrated in Fig. 5；As shown in Fig. 5-1 and 5-2, length of tube demand is infused in the middle and is greater than
3200mm is combined assembly using both parts；
When carrying out steel casting using air blowing method of the invention, the molten steel in ladle passes through the horn mouth at the top of feed trumpet
1 flow into feed trumpet brick 2 in, molten steel will flow downward in feed trumpet brick 2, while blowing to feed trumpet, it is some be difficult to it is suitable
The minute bubbles and non-metallic inclusion that benefit floats can merge into air pocket and big field trash, while small field trash because mutually colliding
Also it can be collided with air pocket and be swept along and floated by it, finally improve the floating probability of bubble and field trash, therefore also reduce
Bubble and the amount of inclusions into cross gate swept along by molten steel, and then reduces into the bubble in mold and is mingled with number
Amount, then by way of being blown into argon gas into molten steel, can more efficiently increase stroke, bubble and folder of the bubble in molten steel
Collision between sundries assembles bubble and field trash to centre, is conducive to removal of floating.The bubble being blown into can also remove
Evil gas, further improves the degree of purity of molten steel, to produce the steel ingot of more high quality in this way.
Below it is several Application Examples:
Application Example one:
As shown in attached drawing 2-1, by air supply pipe 11, air supply pipe 11 pass through the hole on metal feed trumpet 4 by sand 3 and
Gas is fed feed trumpet slit 10 by the hole on the feed trumpet brick wall in 10 outside of slit, in slit 10 close to the middle note of molten steel side
2 wall of pipe brick opens several air vents 13, blows air into feed trumpet molten steel.
Application Example two:
As shown in attached drawing 2-2, by air supply pipe 11, air supply pipe 11 pass through the hole on metal feed trumpet 4 by sand 3 and
Gas is fed feed trumpet slit 10 by the feed trumpet brick wall in 10 outside of slit, makes feed trumpet brick 2 of the slit 10 close to molten steel side
Wall is air brick 12, is blowed air into feed trumpet molten steel.
Application Example three:
As shown in attached drawing 3-1, several air vents 13 are opened in feed trumpet brick 2 wall of the slit 10 close to molten steel side, therefrom
2 outer wall of injecting pipe brick draws air supply pipe 11, therefrom upwardly extends in the sand 3 between injecting pipe brick 2 and metal feed trumpet 4, in middle note
It is drawn at pipe horn mouth 1.
Application Example four:
As shown in attached drawing 3-1, it is set as air brick close to 2 inner wall of feed trumpet brick, therefrom 2 outer wall of injecting pipe brick draws air supply pipe
11, it therefrom upwardly extends in the sand 3 between injecting pipe brick 2 and metal feed trumpet 4, is drawn at feed trumpet horn mouth 1.
Application Example five:
As shown in attached drawing 5, Fig. 5-1 and Fig. 5-2, passing through about 4 two parts of metal feed trumpet with air supply pipe 11, (feed trumpet is long
Degree is just divided into two parts more than 3200mm) junction arrival feed trumpet brick 2, directly blow air into molten steel.
Further more, patent formula of the invention is equally applicable to the casting of other cast metals, such as aluminium, copper metal.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (5)
1. a kind of lower casting device characterized by comprising feed trumpet, cross gate, upper running channel, mold and air supply pipe；
It is molten steel casting horn mouth at the top of the feed trumpet, feed trumpet brick bottom is provided with fire resisting centre runner brick, by feed trumpet
Molten steel distributes to several cross gates, and the cross gate is horizontally disposed, and cross gate liquid feeding end passes through fire resisting centre runner brick and feed trumpet phase
Connection, is provided with fire resisting stream steel tail brick in cross gate outlet end；
The upper running channel is vertically arranged, and upper running channel bottom end is connected by fire resisting stream steel tail brick with cross gate, at the top of upper running channel with
The molten steel entrance of cast base is connected；
Slit gas chamber is equipped in the feed trumpet brick；The slit gas chamber is connected to air supply pipe, i.e., air supply pipe can be to slit
In be blown into gas, open several air vents close to the side of molten steel in slit gas chamber, blow air into feed trumpet molten steel.
2. a kind of lower casting device according to claim 1, it is characterised in that:
Make the feed trumpet brick wall air brick of close molten steel side in slit gas chamber and/or opens up air vent.
3. a kind of lower casting device according to claim 1 or 2, it is characterised in that:
The air supply pipe therefrom injecting pipe brick outer wall draw air supply pipe therefrom in the sand between injecting pipe brick and metal feed trumpet upwards
Extend, is drawn at feed trumpet horn mouth.
4. casting device under the new eddy flow of one kind according to claim 1 or 2, it is characterised in that:
When metal feed trumpet length is more than 3200mm, using upper and lower two parts fission assembling structure.
5. casting device under the new eddy flow of one kind according to claim 4, it is characterised in that:
Wherein, when metal feed trumpet length is more than 3200mm, air supply pipe passes through metal feed trumpet and arrives two parts junction up and down
Up to feed trumpet brick, molten steel is directly blowed air into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645577.2A CN109482825A (en) | 2018-12-29 | 2018-12-29 | A kind of lower casting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645577.2A CN109482825A (en) | 2018-12-29 | 2018-12-29 | A kind of lower casting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109482825A true CN109482825A (en) | 2019-03-19 |
Family
ID=65712122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811645577.2A Pending CN109482825A (en) | 2018-12-29 | 2018-12-29 | A kind of lower casting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN109482825A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112121969A (en) * | 2020-08-24 | 2020-12-25 | 柯超 | Method for preparing fire brick grains by utilizing waste runner bricks |
| CN112676556A (en) * | 2020-12-02 | 2021-04-20 | 成都先进金属材料产业技术研究院有限公司 | Pouring device capable of improving quality of die-cast steel ingot |
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| US3998261A (en) * | 1974-06-18 | 1976-12-21 | British Steel Corporation | Casting steel ingots |
| EP0589762A1 (en) * | 1992-09-21 | 1994-03-30 | Sollac | Casting tube for metal and process for manufacturing such a tube |
| CN2907977Y (en) * | 2006-03-24 | 2007-06-06 | 宝山钢铁股份有限公司 | Segmented feed trumpet |
| JP2008264816A (en) * | 2007-04-19 | 2008-11-06 | Sanyo Special Steel Co Ltd | Method of pouring molten steel into bottom-pouring ingot making mold for improving steel ingot surface texture by generating swirl flow in runner |
| CN102864283A (en) * | 2012-09-19 | 2013-01-09 | 中冶南方工程技术有限公司 | Argon-blowing long nozzle for clean steel |
| CN106424576A (en) * | 2016-12-16 | 2017-02-22 | 东北大学 | Spiral-flow type casting device based on bottom casting |
| CN106825462A (en) * | 2017-01-13 | 2017-06-13 | 北京科技大学 | One kind cast steel ingot protection device and application method |
| CN108396109A (en) * | 2017-02-05 | 2018-08-14 | 鞍钢股份有限公司 | Method for generating dispersed bubbles in molten steel in steel ladle |
| CN210132028U (en) * | 2018-12-29 | 2020-03-10 | 东北大学 | Lower casting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3998261A (en) * | 1974-06-18 | 1976-12-21 | British Steel Corporation | Casting steel ingots |
| EP0589762A1 (en) * | 1992-09-21 | 1994-03-30 | Sollac | Casting tube for metal and process for manufacturing such a tube |
| CN2907977Y (en) * | 2006-03-24 | 2007-06-06 | 宝山钢铁股份有限公司 | Segmented feed trumpet |
| JP2008264816A (en) * | 2007-04-19 | 2008-11-06 | Sanyo Special Steel Co Ltd | Method of pouring molten steel into bottom-pouring ingot making mold for improving steel ingot surface texture by generating swirl flow in runner |
| CN102864283A (en) * | 2012-09-19 | 2013-01-09 | 中冶南方工程技术有限公司 | Argon-blowing long nozzle for clean steel |
| CN106424576A (en) * | 2016-12-16 | 2017-02-22 | 东北大学 | Spiral-flow type casting device based on bottom casting |
| CN106825462A (en) * | 2017-01-13 | 2017-06-13 | 北京科技大学 | One kind cast steel ingot protection device and application method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112121969A (en) * | 2020-08-24 | 2020-12-25 | 柯超 | Method for preparing fire brick grains by utilizing waste runner bricks |
| CN112676556A (en) * | 2020-12-02 | 2021-04-20 | 成都先进金属材料产业技术研究院有限公司 | Pouring device capable of improving quality of die-cast steel ingot |
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