CN102601351A - Vacuum pouring device for steel ingots without tundishes and pouring method of vacuum pouring device - Google Patents
Vacuum pouring device for steel ingots without tundishes and pouring method of vacuum pouring device Download PDFInfo
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- CN102601351A CN102601351A CN201110433277XA CN201110433277A CN102601351A CN 102601351 A CN102601351 A CN 102601351A CN 201110433277X A CN201110433277X A CN 201110433277XA CN 201110433277 A CN201110433277 A CN 201110433277A CN 102601351 A CN102601351 A CN 102601351A
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Abstract
Disclosed are a vacuum pouring device for steel ingots without tundishes and a pouring method of the vacuum pouring device. The vacuum pouring device comprises a vacuum pouring tank, a refined steel ladle body is arranged on the upper portion of a cover plate of the vacuum pouring tank, a sealing flange is disposed between the refined steel ladle body and the vacuum pouring tank, a sliding mechanism used for controlling opening states of nozzles of the refined steel ladle body and the quantity of injected flow is arranged in the sealing flange, an inlet end on the sliding mechanism is aligned with the center of the upper nozzle of a steel ladle and connected with the upper nozzle of the steel ladle, an outlet end of the sliding mechanism is connected with the lower nozzle, the lower nozzle is coaxial with a flow limiter disposed on the cover plate of the vacuum pouring tank, a slide plate blowing system and a nozzle bowing system are further arranged in the sliding mechanism, and a blowing pipeline penetrates through the sealing flange to be connected with an external gas source. Harmful gas can be completely prevented from entering liquid steel when the liquid steel in the refine steel ladle is poured into a tundish by the aid of the device, the device is simple and convenient in operation, and multiple times of discontinued pouring operation can be realized.
Description
Technical field
The present invention relates to a kind of iron and steel mold pouring procedure and used apparatus for pouring; Especially a kind ofly can realize LF refining, VD vacuum refining, the direct vacuum casting of refining ladle; With the operation that cancellation is poured the molten steel in the refining ladle into vacuum pouring special container tundish, avoid pernicious gas to get into the steel ingot vacuum casting device and the method thereof of molten steel in ladle-to-ladle process.
Background technology
At present, in order to obtain high-quality clean molten steel, way is to carry out the LF refining earlier with just making steel liquid usually, in refining furnace, adds double deoxidizer, makes oxygen in the molten steel form deoxidation products and removes.Adopt the vacuum external refining in addition.But all measures all can not be eliminated pernicious gas and be mingled with the influence that ingot quality is produced, and have harmful gas residue in the molten steel, can cause in steel ingot, forming shrinkage cavity defect.In addition, for preventing the secondary oxidation in the molten steel casting process, also adopt vacuum pouring.But when the vacuum pouring steel ingot, the domestic tundish that generally adopts as the vacuum pouring special container uses Argon stopper rod tundish, or the tundish of other type.The Argon stopper rod inside that Argon stopper rod tundish uses is steel material, and the outside is a refractory material, under the long-time immersion of high-temperature molten steel, occurs stopper rod easily and fuses, falls accidents such as chock plug.No matter adopt the tundish of which kind of type; Pouring the molten steel in the refining ladle into tundish secondary oxidation also takes place inevitably and sucks gas; The safeguard measure of taking when the degree size of secondary oxidation and suction gas and cast is closely related, but all inevitable.
People are for reducing pernicious gas in the molten steel, the method for the similar protection cast of same more employing.Through inert gas replacement, for example: tundish fed argon gas before molten steel gets into, to reduce the quantity that oxidizing gas exists in the tundish.Protect cast through the inert gas isolating means, for example: when refining ladle was poured tundish into, annular argon for protecting pouring cover was placed at the sprue gate, and the argon gas of certain pressure blows out back formation air curtain partition steel stream and contacts with atmosphere, reduces the generation of secondary oxidation.Protect cast through the protective device isolating means; For example: in ladle-to-ladle process; Adopt long nozzle protection cast, long nozzle is goed deep in the molten steel in the tundish, when preventing that the refining bag from pouring tundish into; Exist the space that molten steel is contacted with air between refining bag and the tundish, reduce the generation of secondary oxidation.People occur stopper rod down easily and fuse, fall problem such as chock plug and adopt whole stopper rod long-time immersion of high-temperature molten steel for the Argon stopper rod that solves tundish and use; But along with the increase of cast steel ingot weight is also more and more long the duration of pouring, whole stopper rod fusing phenomenon can't be avoided fully.
Summary of the invention
The objective of the invention is deficiency for solving the problems of the technologies described above; Provide a kind of steel ingot not have tundish vacuum casting device and pouring procedure thereof; Can avoid fully that pernicious gas gets into molten steel when molten steel is poured tundish in the refining ladle; And easy and simple to handle, and can also realize repeatedly discontinuity pouring operation.
The present invention is the deficiency that solves the problems of the technologies described above; The technical scheme that is adopted is: steel ingot does not have the tundish vacuum casting device; Comprise the vacuum pouring jar, be provided with the refining ladle body, be provided with sealing flange between refining ladle body and the vacuum pouring jar on the cover plate top of vacuum pouring jar; In sealing flange, be provided with the slide mechanism of control refining ladle body mouth of a river open and-shut mode and beam size; Entrance point on the slide mechanism also is connected with the ladle upper nozzle center-aligned, and the port of export of slide mechanism is connected with the following mouth of a river, and the following mouth of a river is coaxially set with the current limiter that is arranged on the vacuum pouring cover plate; In slide mechanism, also be provided with slide plate scavenger system and mouth of a river scavenger system, insufflation line is passed sealing flange and is connected with outside source of the gas.
Described slide mechanism is made up of upper slide, middle slide plate, lower skateboard and hydraulic cylinder; On upper slide, middle slide plate and lower skateboard, be equipped with the steel outlet hole that the aperture equates; Upper slide steel outlet hole and ladle upper nozzle sealed butt joint; Lower skateboard steel outlet hole and following mouth of a river sealed butt joint, the piston rod of hydraulic cylinder is connected with middle slide plate one end, and the hydraulic line of hydraulic cylinder passes sealing flange and is connected with the external hydraulic pumping plant.
In this slide mechanism, slide plate is closed on the direction of the mouth of a river water conservancy diversion groove that on lower skateboard plane is provided with the band gradient in the middle of being positioned at, and the water conservancy diversion groove is connected with the lower skateboard steel outlet hole.
The aperture of the aperture of the port of described water conservancy diversion groove and middle slide plate steel outlet hole equates.
The section configuration of described water conservancy diversion groove is made up of upper angled section and lower vertical section, and the junction of tilting section and vertical section is smooth joint face, and the height of vertical section is 5-8mm, and the gradient of tilting section is 20-50 °.
The gradient of described tilting section is 28～45 °.
Steel ingot does not have the pouring procedure of tundish vacuum casting device, and concrete steps are following:
It is to cancel refining ladle to the ladle-to-ladle step of tundish that the present invention mainly improves; Directly be placed on refining ladle the position of former tundish on the vacuum pouring cover; Directly carry out vacuum pouring; Eliminated molten steel in ladle-to-ladle process air-breathing maybe, the cleanliness factor of molten steel is further enhanced.
The invention has the beneficial effects as follows:
The present invention carries out the steel ingot vacuum pouring through adopting no tundish; Control the temperature parameter of refining ladle simultaneously at different station; And the winding-up tolerance at the slide plate and the mouth of a river, gas speed, can guarantee that ladle is opened smoothly to water, make dirty molten steel in dropping process, form the similar shape droplets fall injection ingot mould that drenches with rain; Molten steel is the shape that drenches with rain and falls; The molten steel of dispersing makes the pernicious gas that is present in the molten steel be able to overflow and get rid of, thereby simple and effective realization makes pernicious gas eliminating in the molten steel, avoids pernicious gas to be mixed in and forms shrinkage cavity defect in the teeming.Through the real contrast test of watering, the field trash phenomenon that exceeds standard is not found in the forging flaw detection of adopting the inventive method teeming to produce basically, and the gas content of forging [H], [O], [N] also has obvious decline.The inventive method adopts than prior art and pours molten steel into to tundish, does not produce refractory material and washes away impurity, thereby can not cause new pollution.The vacuum pouring of the preferable realization steel ingot of the present invention, simultaneously through the dirty molten steel flow of control, and winding-up tolerance, gas speed; Can reach the optimum pernicious gas in the molten steel of getting rid of, control is simple to realize that easily it is convenient to install; Because of no longer adopting vacuum pouring special container tundish, reduced production cost.
Description of drawings
Fig. 1 is a structure cutaway view of the present invention.
Fig. 2 is the structural representation of the specific embodiment of the invention.
Fig. 3 is a slide mechanism filling pipe end open mode sketch map.
Fig. 4 is a slide mechanism filling pipe end closed condition sketch map.
Mark among the figure: 1, refining ladle body, 2, sealing flange, 3, slide mechanism, 301, upper slide, 302, the upper slide steel outlet hole; 303, middle slide plate, 304, middle slide plate steel outlet hole, 305, lower skateboard, 306, the lower skateboard steel outlet hole, 307, the water conservancy diversion groove; 308, slide plate Argon device, 4, hydraulic tube, 5, gas blow pipe, 6, peep hole, 7, the vacuum pouring jar; 8, current limiter, 9, vacuum chamber, 10, ingot mould, 11, ladle upper nozzle, 12, the mouth of a river down.
The specific embodiment
As shown in the figure; Steel ingot does not have the tundish vacuum casting device, is provided with vacuum pouring jar 7, is provided with refining ladle body 1 on the cover plate top of vacuum pouring jar 7; Be provided with sealing flange 2 between refining ladle body 1 and the vacuum pouring jar 7; The sealing flange 2 of annular is provided with the slide mechanism 3 of control refining ladle body mouth of a river open and-shut mode and beam size with surrounding an enclosed areas between refining ladle body 1 and the vacuum pouring jar 7 in sealing flange 2, the entrance point on the slide mechanism 3 also is connected with ladle upper nozzle 11 center-aligned; The port of export of slide mechanism 3 is connected with the following mouth of a river 12; The following mouth of a river 12 is coaxially set with the current limiter 8 that is arranged on the vacuum pouring cover plate, in slide mechanism 3, also is provided with slide plate scavenger system and mouth of a river scavenger system, and insufflation line is passed sealing flange and is connected with outside source of the gas.
Described slide mechanism is made up of upper slide 301, middle slide plate 303, lower skateboard 305 and hydraulic cylinder; Be equipped with the steel outlet hole that the aperture equates at upper slide, middle slide plate and lower skateboard; Upper slide steel outlet hole 302 and ladle upper nozzle 11 sealed butt joint; Lower skateboard steel outlet hole 306 and the following mouth of a river 12 sealed butt joint; The piston rod of hydraulic cylinder is connected with middle slide plate one end, and the purpose at the mouth of a river is realized closing and opening in the position of slide plate steel outlet hole in the middle of being used to adjust, and the hydraulic line of hydraulic cylinder passes sealing flange and is connected with the external hydraulic pumping plant.In this slide mechanism; Slide plate 303 is closed on the direction of the mouth of a river water conservancy diversion groove 307 that is provided with the band gradient in lower skateboard 305 upper surfaces in the middle of being positioned at; Water conservancy diversion groove 307 1 sides are connected with lower skateboard steel outlet hole 306; Wherein the water conservancy diversion groove is identical with the lower skateboard steel outlet hole degree of depth, and the groove depth that is to say the water conservancy diversion groove is through lower skateboard, and the aperture of the aperture of the port of described water conservancy diversion groove 307 and middle slide plate steel outlet hole 304 equates; And dead in line, this width range have better and middle slide plate steel outlet hole fiting effect.Can better make and be detained the molten steel landing in the middle slide plate steel outlet hole.
The section configuration of described water conservancy diversion groove 307 is made up of upper angled section and lower vertical section; Tilting section and vertical section junction are smooth joint face; The height of vertical section is 5-8mm; The gradient of described tilting section is 20～55 °, and the optimum tilt angle is 28～45 °, this kind angle molten steel in the landing hole of being more convenient for.
Ladle is when drainage and cast, and three layers of slide plate steel outlet hole align, and the mouth of a river is in open mode; When the ladle draining end, slide plate is in and closes in the closed procedure, and the molten steel in the middle slide plate steel outlet hole gets into the lower skateboard steel outlet hole along lower skateboard water conservancy diversion groove and flows out; Middle slide plate continues to advance; Slide plate Argon device 308 aligns with upper slide steel outlet hole 302 and lower skateboard steel outlet hole 306, and the mouth of a river is in closed condition, and ladle carries out the operation of slide plate Argon.Through the opening and closing of middle slide plate, realized repeatedly interrupted pour of molten steel.
Utilize the pouring procedure of this device, concrete steps are following:
To those skilled in the art, under this patent design and specific embodiment enlightenment, some distortion that can directly derive or associate from this patent disclosure and general knowledge; Those of ordinary skills will recognize also can adopt other method; Or use substituting of known technology in the prior art always, and the mutual various combination between characteristic, the for example change of sealing flange shape; Or the like unsubstantiality change; Can be employed equally, can both realize this patent representation function and effect, all belong to this patent protection domain.
Claims (7)
1. steel ingot does not have the tundish vacuum casting device; Comprise vacuum pouring jar (7); It is characterized in that: be provided with refining ladle body (1) on the cover plate top of vacuum pouring jar (7); Be provided with sealing flange (2) between refining ladle body (1) and the vacuum pouring jar (7), in sealing flange (2), be provided with the slide mechanism (3) of control refining ladle body mouth of a river open and-shut mode and beam size, the entrance point on the slide mechanism (3) also is connected with ladle upper nozzle (11) center-aligned; The port of export of slide mechanism (3) is connected with the following mouth of a river (12); The following mouth of a river (12) is coaxially set with the current limiter (8) that is arranged on the vacuum pouring cover plate, in slide mechanism (3), also is provided with slide plate scavenger system and mouth of a river scavenger system, and insufflation line is passed sealing flange and is connected with outside source of the gas.
2. steel ingot according to claim 1 does not have the tundish vacuum casting device; It is characterized in that: described slide mechanism (3) is made up of upper slide (301), middle slide plate (303), lower skateboard (305) and hydraulic cylinder; On upper slide (301), middle slide plate (303) and lower skateboard (305), be equipped with the steel outlet hole that the aperture equates; Upper slide steel outlet hole (302) and ladle upper nozzle (11) sealed butt joint; Lower skateboard steel outlet hole (306) and the following mouth of a river (12) sealed butt joint, the piston rod of hydraulic cylinder is connected with middle slide plate (303) one ends, and the hydraulic line of hydraulic cylinder passes sealing flange and is connected with the external hydraulic pumping plant.
3. steel ingot according to claim 2 does not have the tundish vacuum casting device; It is characterized in that: in this slide mechanism; Slide plate (303) is closed on the direction of the mouth of a river and is provided with the water conservancy diversion groove (307) of being with gradient on the last plane of lower skateboard (305) in the middle of being positioned at, and water conservancy diversion groove (307) is connected with lower skateboard steel outlet hole (306).
4. steel ingot according to claim 3 does not have the tundish vacuum casting device, it is characterized in that: the aperture of the aperture of the port of described water conservancy diversion groove (307) and middle slide plate steel outlet hole (304) equates.
5. steel ingot according to claim 3 does not have the tundish vacuum casting device; It is characterized in that: the section configuration of described water conservancy diversion groove (307) is made up of upper angled section and lower vertical section; The junction of tilting section and vertical section is smooth joint face; The height of vertical section is 5-8mm, and the gradient of tilting section is 20-50 °.
6. steel ingot according to claim 5 does not have the tundish vacuum casting device, it is characterized in that: the gradient of described tilting section is 28～45 °.
7. do not have the pouring procedure of tundish vacuum casting device according to the said steel ingot of claim 1, it is characterized in that: concrete steps are following:
Step 1, refining ladle body (1) directly is arranged on the cover plate top of vacuum pouring cover (7) through sealing flange (2); And adjust the mouth of a river (12) and current limiter (8) center-aligned down, adjust the ingot mould center-aligned in current limiter center and the vacuum chamber;
Step 2, startup slide mechanism (3), molten steel in the steel outlet hole, passes through upper slide steel outlet hole, middle slide plate steel outlet hole and lower skateboard steel outlet hole successively in ladle upper nozzle is flowed through slide mechanism; When molten steel through the mouth of a river scavenger system of slide mechanism the time; External air source is through the insufflation line inert gas of in molten steel, jetting, and molten steel is drench with rain shape to fall, and the pernicious gas in the molten steel is overflowed; The molten steel that falls gets in the vacuum chamber through current limiter and is cast in the ingot mould casting complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110433277XA CN102601351A (en) | 2011-12-22 | 2011-12-22 | Vacuum pouring device for steel ingots without tundishes and pouring method of vacuum pouring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110433277XA CN102601351A (en) | 2011-12-22 | 2011-12-22 | Vacuum pouring device for steel ingots without tundishes and pouring method of vacuum pouring device |
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| CN102601351A true CN102601351A (en) | 2012-07-25 |
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| CN201110433277XA Pending CN102601351A (en) | 2011-12-22 | 2011-12-22 | Vacuum pouring device for steel ingots without tundishes and pouring method of vacuum pouring device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273011A (en) * | 2013-05-14 | 2013-09-04 | 繁昌县金科机电科技有限公司 | Production technology for thin-walled piston body |
| CN105665660A (en) * | 2016-03-29 | 2016-06-15 | 中国重型机械研究院股份公司 | Vacuum pouring device and method for steel ladles of various capacities |
| CN106011378A (en) * | 2016-07-22 | 2016-10-12 | 中信重工机械股份有限公司 | Deoxidation method for hydrogenated steel smelting |
| CN106735154A (en) * | 2016-12-28 | 2017-05-31 | 二重集团（德阳）重型装备股份有限公司 | The mixed gas molten steel atomising device in the vacuum pouring mouth of a river |
| CN108618534A (en) * | 2018-06-19 | 2018-10-09 | 南京工业职业技术学院 | A kind of dual-purpose cup |
| CN109161639A (en) * | 2018-09-29 | 2019-01-08 | 中信重工机械股份有限公司 | A kind of DT4 magnetic pole of 250MeV superconducting cyclotron main magnet, magnetic yoke steel smelting technique |
| CN110026533A (en) * | 2019-05-30 | 2019-07-19 | 东北大学 | A kind of basket pouring molten steel recyclable device and method |
| CN110216273A (en) * | 2019-07-16 | 2019-09-10 | 上海电气上重铸锻有限公司 | It is a kind of for refining the sealing device being directly poured under packet vacuum state |
| CN114042903A (en) * | 2021-11-18 | 2022-02-15 | 一重集团大连工程技术有限公司 | Three slide plate sliding gate |
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| JP2001129646A (en) * | 1999-10-29 | 2001-05-15 | Shinagawa Refract Co Ltd | Slide valve apparatus |
| CN101015852A (en) * | 2007-02-15 | 2007-08-15 | 浙江天马轴承股份有限公司 | Incorporated device for vacuum steel ladle degassing and vacuum casting a plurality of steel ingots |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103273011B (en) * | 2013-05-14 | 2016-08-17 | 繁昌县金科机电科技有限公司 | A kind of production technology of thin-walled piston body |
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| CN106735154A (en) * | 2016-12-28 | 2017-05-31 | 二重集团（德阳）重型装备股份有限公司 | The mixed gas molten steel atomising device in the vacuum pouring mouth of a river |
| CN108618534A (en) * | 2018-06-19 | 2018-10-09 | 南京工业职业技术学院 | A kind of dual-purpose cup |
| CN109161639A (en) * | 2018-09-29 | 2019-01-08 | 中信重工机械股份有限公司 | A kind of DT4 magnetic pole of 250MeV superconducting cyclotron main magnet, magnetic yoke steel smelting technique |
| CN110026533A (en) * | 2019-05-30 | 2019-07-19 | 东北大学 | A kind of basket pouring molten steel recyclable device and method |
| CN110026533B (en) * | 2019-05-30 | 2020-09-01 | 东北大学 | Tundish pouring molten steel recovery device and method |
| CN110216273A (en) * | 2019-07-16 | 2019-09-10 | 上海电气上重铸锻有限公司 | It is a kind of for refining the sealing device being directly poured under packet vacuum state |
| CN110216273B (en) * | 2019-07-16 | 2021-04-16 | 上海电气上重铸锻有限公司 | Sealing device for direct pouring of refining ladle in vacuum state |
| CN114042903A (en) * | 2021-11-18 | 2022-02-15 | 一重集团大连工程技术有限公司 | Three slide plate sliding gate |
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Application publication date: 20120725 |