CN100346909C - Submerged entry nozzle with dynamic stabilization - Google Patents
Submerged entry nozzle with dynamic stabilization Download PDFInfo
- Publication number
- CN100346909C CN100346909C CNB2004800070935A CN200480007093A CN100346909C CN 100346909 C CN100346909 C CN 100346909C CN B2004800070935 A CNB2004800070935 A CN B2004800070935A CN 200480007093 A CN200480007093 A CN 200480007093A CN 100346909 C CN100346909 C CN 100346909C
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- China
- Prior art keywords
- outlet
- gate spool
- edge
- tongue
- downstream
- Prior art date
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- Expired - Fee Related
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Continuous Casting (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Jet Pumps And Other Pumps (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Nozzles (AREA)
Abstract
The present invention relates to a pour tube for casting molten metal. The pour tube is adapted to reduce turbulence and mold disturbances, thereby producing a more stable, uniform outflow. The pour tube includes an exit port with at least one tongue to provide at least two slots on either side of the tongue. The slots generate counter-rotating flows, which result in a more diffusive and more homogeneous outflow. Advantageously, such an outflow can reduce detrimental asymmetry and alumina clogging in the pour tube.
Description
Technical field
The present invention relates generally to a kind of refractory article, particularly a kind of refractory pouring tube that is used at continuous casting operation conveying molten metals.
Background technology
Particularly in the continuous casting of iron and steel, motlten metal stream generally is transported to second metallurgical tank or mould via refractory pouring tube from first metallurgical tank at metal.This gate spool is commonly referred to as the mouth of a river or pipe box and so on, and it has the hole that is suitable for conveying molten metals.Gate spool comprises submersed nozzle (SEN) or immersion pipe box (SES), and this submersed nozzle or pipe box are discharged motlten metal below the liquid level of receiving vessel or mould.
Liquid metal is discharged via one or more outlets from the downstream in hole.A critical function of gate spool is that motlten metal is smooth and stably discharge and do not stop or interrupting.Smooth and stable discharge helps processing, and can improve the quality of finished product.For the ease of further processing, second critical function of gate spool is to form suitable dynamical state in the molten metal in receiving vessel or mould.The generation of suitable dynamical state requires gate spool to have a plurality of outlets, and the setting of these outlets should make motlten metal stream turn in one or more directions when gate spool is discharged.
Upset smooth and stable factor of discharging comprises physical condition and dynamic condition, they have caused the asymmetric flow behavior of the motlten metal in hole and outlet.Metal flow speed distributes and the asymmetry of streamline can result from, for example, and (a) the inappropriate design of hole and outlet; (b) existence of upstream flow rate control device and (c) hole and the inhomogeneous obstruction that exports interior slagging scorification thing.Even there are not these factors, the turbulent flow in the hole still can cause the dynamic flow asymmetry.For example, when flowing through the hole, near the motlten metal flow velocity that is formed on the centerline hole that fails to be convened for lack of a quorum is higher than along the flow velocity of hole sidewall, or the flow velocity of center line one end is lower than the relative other end, or the flow velocity at disalignment place is higher.These different flow velocitys can cause pulsation and excessive turbulence when tap hole, become complicated and reduced end product quality thereby make to process.Resemble the such throttling arrangement of plunger rod or clamp gate valve and can partly block the hole inlet, and enter the hole with making motlten metal stream disalignment.Metal flow can preferential flow to a side in hole, thereby and asymmetric or flow out gate spool unevenly and in mold, cause undue fluctuation and turbulent flow.The pulsation of efflux flow, fluctuation, turbulent flow and asymmetry can be aggravated because of the layout like this of outlet, and this layout makes liquid stream turn to before being discharged from pipeline.Can cause the instability rotation and the vortex of the diverted flow of discharging by this outlet near the asymmetry of the liquid at outlet place stream, thereby cause the unstability of emission direction, cause the flow pattern unstability in the receiving vessel, thereby undesirable dynamic condition occurs in the receiving vessel.
Sediment or nonmetal deposit also may block or limiting holes, stablize discharge line thereby upset motlten metal.In molten steel, sediment or nonmetal deposit mainly are made up of aluminium oxide and other high-melting-point impurity.Thereby alumina deposits can cause limiting and blocking the level and smooth and steady flow that stops or seriously hindering liquid molten steel.Asymmetric inhomogeneous metal flow can cause the appearance in the preferred place of slagging scorification deposit, and the inhomogeneities that increases the weight of to flow.Pipeline can be removed with oxygen lance; But casting process is upset in the oxygen blast meeting, reduces refractory life, and the steel quality that reduces casting efficient and production.The hole of causing because of sediment all or most of the obstruction reduced the life expectancy of gate spool and cost an arm and a leg and expend time of the steel producer.
Attempt to improve mobile method in the prior art and comprise chemistry and mechanical means.For example, can improve mobile by reducing precipitation of alumina and slagging scorification subsequently.Thereby the prior art gas jet is exerted pressure and is reduced the aluminium oxide slagging scorification to gate spool.Regrettably, gas sprays needs a large amount of gases, makes the design of refractory material complicated, and is not total effectively solution.Gas also may dissolve or be mixed in the metal, causes the metal quality problem, and these a little problems comprise pore or the rarefaction defect in the steel.Replace with that gas sprays or the method for combination with it, prior art is the hole to be served as a contrast last layer declare the fire-resistant constituent that can prevent that aluminium oxide from piling up.Constituent comprises low melting point refractory material, for example CaO-MgO-Al
2O
3Eutectic mixture, calcium zirconate and calcium silicide, when alumina deposit during on the surface above-mentioned constituent can come off.These constituents easily split when high temperature, and may dewater and loss in casting cycle.For these reasons, be limited their service life.Other declare that the surface composition thing that can suppress alumina deposit comprises the refractory material that contains SiAlON-graphite, metal diboride, boron nitride, aluminium nitride and do not have carbon complex.Such refractory material can be very expensive, impracticable and be not only dangerous but also time-consuming when making.
Be used to improve the U.S. Pat 5,785,880 that mobile Machine Design comprises Heaslip etc., it has explained a kind of gate spool with diffusion geometry, motlten metal stream can be transported to mold smoothly.Another design comprises patent EP0765702B1, and it has described the porous obstacle in the hole, and it makes liquid stream from preferred trajectory deflection.All attempt to control motlten metal with reference to mode for these two kinds and import mold by mechanical handling motlten metal stream.But the both does not address the aluminium oxide slagging scorification and reduces the method for aluminium oxide slagging scorification.
Prior art also includes claims by reducing in the hole alumina deposits and improves mobile design.These designs comprise the gate spool that has taper and " stairstepping " hole.The U.S. Pat 4,566,614 of Frykendahl has been explained a kind of inert gas jet blower, and it has the bellmouth that is used for reducing " pulsation " in air-flow.More level and smooth gas ostium allegedly can reduce slagging scorification." stairstepping " design comprises the gate spool with the discontinuous variation of bore dia.Stepped designs also comprises the gate spool with spiral bore.The Kokai61-72361 of Japan has explained the stairstepping gate spool, and has described a kind of gate spool that has the hole, has a convex or concave portions in this hole at least in order to produce turbulent flow in motlten metal.Compare with laminar flow, turbulent flow allegedly can reduce the aluminium oxide slagging scorification.The U.S. Pat 5,328,064 of Nanbo etc. has been explained a kind of hole that has a plurality of concave portions, and the ladder that this concave portions is had constant diameter d separates.The diameter of each part is all greater than d, and the preferred streamwise of this section diameter reduces.Ladder is described to produce turbulent flow and reduces the aluminium oxide slagging scorification.
The patent US6425505 of Heaslip has explained a kind of gate spool that comprises a plurality of smooth parts that connect, and the molten metal flow in the hole of flowing through has been improved in these coupling parts.This part can reduce the possibility in the asymmetric mobile and clogged with deposits hole of motlten metal stream.Each part comprises convergence portion and divergent portion.Convergence portion makes liquid flow to the deflection of center, hole, and divergent portion is dispersed liquid stream.Being combined in of convergence and divergent portion produces more symmetrical flowing in the gate spool.
The prior art of attempting motlten metal stream in the control hole is very little from the unstable mobilization of gate spool outlet to control.Outlet can cause unsteady flow pattern in effluent.Enter mold from the non-stationary flow of gate spool and can increase meniscus shape turbulent flow and fluctuation.Flowing like this can cause that also effluent drift about and makes flow pattern generation deviation in the mold in mold.In addition, unstable outflow can cause the aluminium oxide slagging scorification in the lower region in gate spool, is included in pipeline recess bottom and the lower corner of port part.Usually slagging scorification will produce asymmetric outflow from gate spool.
Require refractory pouring tube to produce always and stablize outflow and reduce meniscus turbulence, fluctuation, asymmetric flow pattern and aluminium oxide slagging scorification.Ideal situation, this gate spool also can be improved motlten metal stream that enters mold and the performance of improving casting metals.
Summary of the invention
The present invention relates to a kind of gate spool of the motlten metal that is used to cast.This gate spool comprises at least one outlet, and with respect to prior art, it is a kind of by more stable, uniform motlten metal effluent in outlet or the outlet that this gate spool can provide.Effluent after the improvement has reduced meniscus turbulence and fluctuation, has reduced the aluminium oxide slagging scorification and has promoted the symmetry effluent.These advantages can make produces improved manufactured goods.
On the whole, this product comprises the gate spool with outlet shape, and the shape of this outlet can reduce mobile unstability and generate more stable effluent thus.This shape has reduced unsettled reciprocal rotation flow pattern common in the effluent of gate spool.It is to be produced by unstability that flows in the mold and low-quality casting that this flow pattern is considered to small part.
An aspect the present invention includes a kind of outlet, and this outlet can be in the rotation or the revolution of liquid stream stable and control liquid stream when exporting progressive die tool side by side.Resisted around the width of extensive rotation and consequent approaching outlet or the rotary current highly and thereby minimizing.Cause more drift and unstability in the flow pattern that the unsettled and uncontrolled extensive rotation of discharge currents is considered to produce in mould or receiving vessel.Outlet comprises a plurality of grooves, and these grooves can produce consistent reversed turning stream in motlten metal, and the extensive liquid stream rotation of the extensive rotation of antagonism liquid stream on single direction or the vibration from a direction to relative direction.Provide from the stable reversed turning stream in the effluent of gate spool to make that motlten metal more spreads, the more even and still less discharging of turbulent flow, and in receiving vessel, provide a kind of more consistent flow pattern thus.
Effluent from gate spool can form a upper circulation loop part in mould.This upper circulation loop is near the upper face of mould and influence for example top surface fluctuation and meniscus turbulence.The fluctuation that should motlten metal can be directed to the surface of mould from the effluent of outlet of the present invention and not produce too much meniscus turbulence or die horizontal face.Heat distribution in mould also can improve.Whole flow pattern in mould becomes more stable.
In first embodiment, outlet has a tongue at its downstream edge.This tongue and downstream edge define a plurality of grooves in the lower corners of outlet.The existence of these grooves has resisted the large-scale rotation of discharge currents and promoted the formation of reversed turning stream on a small scale in from the effluent of gate spool.The outlet that comprises tongue has changed in the outlet and pressure and the stream feature of pouring tube outlet in regional, so aluminium oxide slagging scorification and asymmetric liquid stream are reduced.
In a second embodiment, outlet has a tongue in the edge at its upstream.This tongue and upstream edge define a plurality of grooves in the upper corners of outlet.The existence of these grooves has resisted the extensive rotation in the effluent.Rotation is not wished to produce on a large scale, because this rotation itself is unstable and have accidental direction transformation usually, and this rotation meeting also produces inconsistent discharge direction and unsettled dynamic behaviour then in mould in discharge currents.
In the 3rd embodiment, outlet all has tongue with downstream edge at its upstream.The outlet that comprises the upstream and downstream tongue impels the formation of reversed turning stream stable in effluent, has fabulous symmetry and little and controllable scale simultaneously.
To using the explanation of the preferred process of the present invention, other details of the present invention, purpose and advantage will be more readily apparent from by following.
Description of drawings
Fig. 1 has shown the 3-D view of first embodiment of gate spool of the present invention.
First embodiment that Fig. 2 has shown gate spool of the present invention is perpendicular to the view on the outlet direction.
Fig. 3 has shown in the prior art that gate spool is perpendicular to the view on the direction of outlet and accidental unsteady flow pattern.
Fig. 4 has shown the view of first embodiment of the gate spool of the present invention that contains the reversed turning flow pattern.
Fig. 5 has shown the view of first embodiment of the gate spool of the present invention of the design parameter that defines tongue.
Fig. 6 has shown the cutaway view of first embodiment of gate spool of the present invention, and it laterally defines the discharge angle of groove and tongue.
Second embodiment that Fig. 7 has shown gate spool of the present invention is perpendicular to the view on the outlet direction.
Second embodiment that Fig. 8 has shown gate spool of the present invention is perpendicular to the view on the outlet direction that contains the reversed turning flow pattern.
The 3rd embodiment that Fig. 9 has shown gate spool of the present invention is perpendicular to the view on the outlet direction.
The specific embodiment
The present invention includes a kind of gate spool that in the motlten metal continuous casting, uses.This gate spool comprises a hole that is communicated with at least one outlet fluid.Gate spool refer to be used for to the motlten metal conductance to pipe box (shroud), nozzle (nozzle) and other refractory pieces, comprise for example immersion pipe box (entry shroud) and nozzle.The present invention is particularly suitable for the sort of gate spool with an outlet, and outlet is at a conveying molten metals under the metal bath surface in the receiving vessel of mould for example.
Fig. 1 and Fig. 2 have shown another perspective view of gate spool 1.Gate spool 1 comprises inlet 11 and the outlet 12 that is communicated with by hole 13 fluids.Gate spool 1 allows motlten metal stream from flow through hole and arrive the downstream of outlet 12 of 11 the upstream extremity of entering the mouth.Outlet 12 by from the outer surface of gate spool to the hole 13, the periphery that runs through the hole of gate spool 1 limits.The edge of outlet 12 comprises downstream surface 21.The edge of outlet can be any suitable common shape, includes but not limited to ellipse, polygon or its any combination.What the common shape of outlet was suitable is substantial rectangular.In one embodiment, outlet 12 is limited by the side surface 23 of downstream surface 21, upstream face 22 and connection upstream face and downstream surface.At least one tongue 24 stretches out from downstream surface 21 or upstream face 22.Tongue 24, downstream surface 21 and side surface 23 define a plurality of groove shape openings 25.
Fig. 3 has shown the gate spool of the prior art 2 that has inlet 11 and outlet 12.In the casting cycle of motlten metal, at least a portion kinetic energy of the downward liquid stream 31 of motlten metal will be converted into the revolution effluent 32 that has angular momentum.Remaining kinetic energy makes metal flow discharge with high-speed jet from outlet.Revolution effluent 32 rotates with counter clockwise direction as shown in the figure, but the direction of rotation of the effluent that is produced in the gate spool of present technology is unsettled, and shows as the transformation once in a while of direction of rotation.According to the asymmetric degree of the MOMENTUM DISTRIBUTION in the downward liquid stream 31, the rotation scale of effluent is suitable with width, height or the diameter of outlet.The inequality of being heated that the large-scale unstable rotation of the effluent that produces in the gate spool of prior art and high velocity jet cause turbulent flow, surface wave, flow pattern unstability and mould.In addition if these problems mix, 32 of rotary currents can in outlet 12, produce flow point from.Flow point is from relevant with the aluminium oxide slagging scorification of the effluent that can hinder the outlet place.The synergy of high velocity jet and large-scale rotational flow has produced unstable outflow thing, can produce vibration and drift like this in mould.The outlet of prior art fails to fill these defectives of clothes.
On the contrary, as shown in Figure 4, the direction that outlet 12 of the present invention has changed the downward liquid stream 31 of motlten metal makes it at least in part by groove 25.Groove is converted at least two reversed turning streams 41 with at least a portion kinetic energy of downward liquid stream 31, thereby resists the formation in extensive rotation loop single in this effluent.The angular momentum of reversed turning stream 41 has been eliminated basically, thereby does not almost have or do not have clean angular momentum from the effluent of outlet 12.Simultaneously, because that discharge currents distributes when whole outlet 12 is more even, thereby the speed of the kinetic energy of discharge currents and consequent discharge currents has also reduced widely.Reversed turning stream 41 make the speed of effluent reduce widely and also effluent in rotation, vortex or eddy current suppressed.Effluent spreads better and can more approaching described surface and can not produce surface wave or turbulent flow.Kuo San effluent will produce better heat distribution in mould better.In addition, the flow point in outlet 12 from and the phenomenon of incident aluminium oxide slagging scorification also reduced.In the aluminium oxide slagging scorification intrinsic flow instability can be avoided basically.
Tongue should have enough big size to limit groove, and this groove can produce reversed turning stream in effluent.Referring to Fig. 5, tongue 24 has width (w1) 51 and height (h1) 52.Compare with height (H) 54 with the width (W) 53 of outlet 12, the width 51 of tongue generally should be at least about 1/8th of outlet width 53.The height 52 of tongue also generally be at least about outlet 12 height 54 1/8th.Obviously, the size that increases tongue can reduce the overall discharge area of outlet, thereby reduces issuable effluent in the gate spool, so tongue generally all can be as much as possible little of to produce reversed turning stream.Casting condition comprises grade, the casting temperature of motlten metal, geometry, discharge, the size of gate spool and the size of outlet of mould, and these conditions will have influence on the size of tongue.
Referring to Fig. 6, tongue and associated groove are designed to the discharge currents direction is changed into desirable angle.The longitudinal axis 61 in hole 13 is aimed at the roughly direction of downward metal flow by the hole.Vertical axis 63 meets at right angles with longitudinal axis 61 and passes through outlet along the center usually.Surface away from the tongue at edge is restricted to extensional surface 64, and this tongue surface is set to and vertical axis 63 α that has angle
1The downstream surface 65 of groove is set to and vertical axis 63 α that has angle
2Can select α
1And α
2Angle so that the part discharge currents turns to desirable discharge angle.Those of skill in the art know that desirable discharge angle depends on casting condition, such as geometry, discharge, the size of gate spool and the size of outlet of the grade of motlten metal, casting temperature, mould.General α
1And α
2Angular range be from-45 spending+45 degree.
Fig. 7 has shown second embodiment of gate spool of the present invention.Gate spool 1 comprises inlet 11 and the outlet 12 that is communicated with by through-flow (through-flow) hole 13 fluids.Gate spool is suitable for motlten metal stream from the inlet 11 of upstream extremity through being transported to the downstream that comprises outlet 12.Outlet 12 is limited by the side surface 23 of upstream face 22, downstream surface 21 and connection upstream face and downstream surface.Outlet can be any suitable common shape, includes but not limited to ellipse, polygon or its any combination.The common shape of outlet conveniently is rectangle substantially.At least one tongue 24 extends downstream from upstream face 22.Tongue 24, upstream face 22 and side surface 23 define a plurality of groove shape openings 25.
As shown in Figure 8, the outlet 12 of the present invention direction that changed the downward liquid stream 31 of motlten metal makes it at least in part by groove 25.By the relative formation in large-scale rotation loop single in discharge currents, groove 25 is converted into reversed turning stream 41 with at least a portion kinetic energy of rotating flow 32.The angular momentum of reversed turning stream 41 has reduced the angular momentum from the effluent of outlet 12 widely.Rotation on a large scale, vortex or eddy current are suppressed in the effluent, and effluent is more symmetrical, more diffusion and can be more do not produce too much surface wave or turbulent flow near the top of mould or receiving vessel.In addition, the unstability that flows intrinsic in shunting in outlet 12 and the aluminium oxide slagging scorification can be avoided substantially, thereby relevant aluminium oxide slagging scorification also can reduce.
Fig. 9 has shown the 3rd embodiment of gate spool of the present invention.Gate spool 1 comprises inlet 11 and the outlet 12 that is communicated with by through flow hole 13 fluids.Gate spool 1 is suitable for motlten metal stream is transported to the downstream that comprises outlet 12 from the inlet 11 of upstream extremity through via hole.Outlet 12 is limited by the side surface 23 of upstream face 22, downstream surface 21 and connection upstream face and downstream surface.Outlet can be any suitable common shape, includes but not limited to ellipse, polygon or its any combination.What the common shape of outlet was suitable is rectangle substantially.At least one lower tongue 91 is upstream extended with at least one upper tongue 92 from downstream surface 21 and is extended downstream from upstream face 22.Lower tongue 91, upper tongue 92, downstream surface 21, upstream face 22 and side surface 23 define a plurality of groove shape openings 25.The motlten metal of discharging from gate spool 1 to small part through groove 25, having on a small scale simultaneously, the reversed turning stream of high stability forms.
Obviously, all be possible for numerous modifications and variations of the present invention.Advantageously, the present invention can combine with hole shape of the prior art, for example comprises the hole of discontinuous or " ladder ", perhaps comprises the hole of truncated cone part.Therefore, be appreciated that the present invention can otherwise be implemented and be not only the mode that specifies in right is subsequently more asked institute's restricted portion.
Claims (12)
1, a kind of being used for from the gate spool (1) of upstream position position casting downstream motlten metal stream, this gate spool comprises the inner surface of limiting hole (13) and the outer surface with at least one outlet (12), this outlet to small part is limited by an edge and is communicated with the orifice flow body, outlet is characterised in that, at least one tongue (24) extends from an edge, forms at least two grooves (25) thus in outlet.
2, gate spool as claimed in claim 1 is characterized in that, outlet comprises downstream edge (21) and the tongue that upstream extends from downstream edge.
3, gate spool as claimed in claim 1 is characterized in that, outlet comprises upstream edge (22) and the tongue that extends downstream from upstream edge.
4, gate spool as claimed in claim 1 is characterized in that, outlet comprises upper tongue (92) of extending downstream from upstream edge (22) and the lower tongue (91) of upstream extending from downstream edge (21).
5, gate spool as claimed in claim 1 is characterized in that, the longitudinal axis of gate spool (61) is between upstream position and downstream position.
6, gate spool as claimed in claim 5 is characterized in that, at least one tongue comprises extensional surface (64), and this extensional surface limits a tongue plane, this plane and longitudinal axis with-45 spend+45 degree intersect.
7, gate spool as claimed in claim 5 is characterized in that, at least one edge, this edge comprise the edge surface that limits plane, an edge, this edge plane and longitudinal axis with-45 spend+45 degree intersect.
8, gate spool as claimed in claim 5 is characterized in that, outlet defines a discharge plane substantially parallel with longitudinal axis.
9, gate spool as claimed in claim 1 is characterized in that, the hole comprises the part that a plurality of fluids are communicated with.
10, gate spool as claimed in claim 9 is characterized in that, discontinuous the part that each fluid is communicated with separated.
11, gate spool as claimed in claim 9 is characterized in that, the part that described a plurality of fluids are communicated with comprises at least one frustoconical part.
12, a kind of method of using as arbitrary described gate spool casting motlten metal stream among the claim 1-11 is characterized in that:
A) make the metal flow hole of flowing through;
B) metal flow is guided towards outlet;
C) reversed turning that produces symmetry when metal flow process outlet in metal flow flows.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45515503P | 2003-03-17 | 2003-03-17 | |
| US60/455,155 | 2003-03-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1761543A CN1761543A (en) | 2006-04-19 |
| CN100346909C true CN100346909C (en) | 2007-11-07 |
Family
ID=33029966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800070935A Expired - Fee Related CN100346909C (en) | 2003-03-17 | 2004-03-09 | Submerged entry nozzle with dynamic stabilization |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US20060169728A1 (en) |
| EP (1) | EP1603697B1 (en) |
| JP (1) | JP2006520694A (en) |
| KR (1) | KR20050113230A (en) |
| CN (1) | CN100346909C (en) |
| AT (1) | ATE336319T1 (en) |
| AU (1) | AU2004221863B2 (en) |
| BR (1) | BRPI0408340A (en) |
| CA (1) | CA2519050A1 (en) |
| DE (1) | DE602004001980T2 (en) |
| ES (1) | ES2267057T3 (en) |
| MX (1) | MXPA05009852A (en) |
| RU (1) | RU2331496C2 (en) |
| UA (1) | UA85179C2 (en) |
| WO (1) | WO2004082871A1 (en) |
| ZA (1) | ZA200507285B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0610809D0 (en) † | 2006-06-01 | 2006-07-12 | Foseco Int | Casting nozzle |
| JP4938490B2 (en) * | 2007-02-19 | 2012-05-23 | 株式会社神戸製鋼所 | Grooved immersion nozzle |
| JP5172432B2 (en) * | 2008-04-01 | 2013-03-27 | 株式会社神戸製鋼所 | Continuous casting method of ultra low carbon steel or low carbon steel using grooved immersion nozzle |
| EP2319640A1 (en) * | 2009-10-21 | 2011-05-11 | Vesuvius Group S.A | Casting nozzle and assembly of such a nozzle with an inner nozzle |
| WO2012003047A1 (en) * | 2010-07-02 | 2012-01-05 | Vesuvius Crucible Company | Submerged entry nozzle |
| US9676029B2 (en) | 2010-07-02 | 2017-06-13 | Vesuvius Crucible Company | Submerged entry nozzle |
| JP6217778B2 (en) * | 2016-03-31 | 2017-10-25 | 品川リフラクトリーズ株式会社 | Immersion nozzle |
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| US5785880A (en) * | 1994-03-31 | 1998-07-28 | Vesuvius Usa | Submerged entry nozzle |
| FR2739313B1 (en) * | 1995-09-28 | 1997-10-31 | Usinor Sacilor | NOZZLE FOR THE INTRODUCTION OF A LIQUID METAL INTO A CONTINUOUS CASTING LINGOTIERE OF METALS |
| US6016941A (en) * | 1998-04-14 | 2000-01-25 | Ltv Steel Company, Inc. | Submerged entry nozzle |
| US6425505B1 (en) * | 1999-09-03 | 2002-07-30 | Vesuvius Crucible Company | Pour tube with improved flow characteristics |
-
2004
- 2004-03-09 US US10/549,165 patent/US20060169728A1/en not_active Abandoned
- 2004-03-09 AU AU2004221863A patent/AU2004221863B2/en not_active Ceased
- 2004-03-09 ES ES04718823T patent/ES2267057T3/en not_active Expired - Lifetime
- 2004-03-09 CN CNB2004800070935A patent/CN100346909C/en not_active Expired - Fee Related
- 2004-03-09 AT AT04718823T patent/ATE336319T1/en not_active IP Right Cessation
- 2004-03-09 KR KR1020057017348A patent/KR20050113230A/en not_active Application Discontinuation
- 2004-03-09 CA CA002519050A patent/CA2519050A1/en not_active Abandoned
- 2004-03-09 WO PCT/US2004/007184 patent/WO2004082871A1/en active IP Right Grant
- 2004-03-09 MX MXPA05009852A patent/MXPA05009852A/en active IP Right Grant
- 2004-03-09 ZA ZA200507285A patent/ZA200507285B/en unknown
- 2004-03-09 EP EP04718823A patent/EP1603697B1/en not_active Expired - Lifetime
- 2004-03-09 JP JP2006507001A patent/JP2006520694A/en active Pending
- 2004-03-09 BR BRPI0408340-7A patent/BRPI0408340A/en not_active IP Right Cessation
- 2004-03-09 RU RU2005130062/02A patent/RU2331496C2/en active
- 2004-03-09 UA UAA200508787A patent/UA85179C2/en unknown
- 2004-03-09 DE DE602004001980T patent/DE602004001980T2/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227078A (en) * | 1992-05-20 | 1993-07-13 | Reynolds Metals Company | Flow-vectored downspout assembly and method for using same |
| US5944261A (en) * | 1994-04-25 | 1999-08-31 | Vesuvius Crucible Company | Casting nozzle with multi-stage flow division |
| US5603860A (en) * | 1994-07-25 | 1997-02-18 | Voest-Alpine Industrieanlagenbau Gmbh | Immersed casting tube |
| CN1160369A (en) * | 1994-10-07 | 1997-09-24 | 曼内斯曼股份公司 | Immersed pouring spout |
| CN1222104A (en) * | 1996-06-19 | 1999-07-07 | 乔维尼·阿维迪 | Submerged nozzle for continuous casting of thin slabs |
| CN1233986A (en) * | 1996-10-23 | 1999-11-03 | 维苏威法兰西股份有限公司 | Molten steel transfering element and its mfg. |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006520694A (en) | 2006-09-14 |
| UA85179C2 (en) | 2009-01-12 |
| RU2005130062A (en) | 2006-02-10 |
| AU2004221863A1 (en) | 2004-09-30 |
| MXPA05009852A (en) | 2005-12-06 |
| US20060169728A1 (en) | 2006-08-03 |
| ATE336319T1 (en) | 2006-09-15 |
| WO2004082871A1 (en) | 2004-09-30 |
| EP1603697B1 (en) | 2006-08-16 |
| KR20050113230A (en) | 2005-12-01 |
| RU2331496C2 (en) | 2008-08-20 |
| DE602004001980T2 (en) | 2007-02-01 |
| CN1761543A (en) | 2006-04-19 |
| EP1603697A1 (en) | 2005-12-14 |
| ZA200507285B (en) | 2006-12-27 |
| BRPI0408340A (en) | 2006-03-21 |
| CA2519050A1 (en) | 2004-09-30 |
| DE602004001980D1 (en) | 2006-09-28 |
| AU2004221863B2 (en) | 2009-04-09 |
| ES2267057T3 (en) | 2007-03-01 |
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