CN1019955C - Continuous casting line with multi-function stirrers - Google Patents
Continuous casting line with multi-function stirrers Download PDFInfo
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- CN1019955C CN1019955C CN 86100380 CN86100380A CN1019955C CN 1019955 C CN1019955 C CN 1019955C CN 86100380 CN86100380 CN 86100380 CN 86100380 A CN86100380 A CN 86100380A CN 1019955 C CN1019955 C CN 1019955C
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Abstract
The present invention relates to a continuous casting production line (10) which comprises a crystallizer (11) which is provided with a slope angle with optional requirements from 0 degree to 90 degrees, a swinging device (17), a roller-way conveying apparatus (12) with at least one bent fanlike section, and at least one electromagnetic generator (25) with variable efficiency.
Description
This invention relates to a continuous casting line that has universal mixer.Or rather, the continuous casting line that the present invention relates to can satisfy the needs of any development, and has created condition for the application of multi-functional stirring setting.
The whole layout of crystallizer and continuous casting line can be controlled in 0～90 ° the desirable radian.Therefore, the present invention can be used for level, basic horizontal, vertical or basic vertical continuous casting.In fact, new principle of the present invention applicable to from level to vertical any type of continuous casting.In the following description, though disclose a kind of application examples of the present invention; The continuous casting of basic horizontal, but will be understood that principle of the present invention can be used for any type of continuous casting.
Existing technology once attempted to provide some to reduce the embodiment of whole continuous casting line size.As everyone knows, traditional continuous casting line comprises a vertical or vertical substantially crystallizer and a continuous casting line, and this continuous casting line is crooked gradually, and developing into up to it is the production line of level substantially, so that adapt with throwing and straightener.
In such embodiments, because require the casting curvature of a curve can not surpass certain limit, so casting production line comprises that crystallizer has quite high vertical dimension.
For reducing the height of continuous casting line, some embodiment have been proposed, in these embodiments, the layout of continuous casting line tilts substantially.
For example, the claimed metal continuous cast equipment that has curved mould of patent CH402172, also claimed one be installed in the outlet of this equipment with the rod of rear with curved guide and drawing device.The feature of this equipment is that crystallizer is arranged in below the horizontal plane of the crystallizer center of curvature; In this case, by an angle between 20～89 ° of the crystallizer center of curvature and the plane by curved mould inwall upper limb and the formation of above-mentioned plane.
This patent is the use of claimed a kind of electromagnetic mixing apparatus also, with influence casting direction.
Yet above-mentioned suggestion is subjected to the physical constraints of following two aspects; Actual equipment of making invention is restricted; Electromagnetic mixing apparatus can not be accomplished both to influence casting effectively and don't cause abnormality in casting.
Though the technology of phase has had many progress at the beginning of the electromagnetic mixing apparatus ratio,, all known electromagnetism stir device generally all these shortcomings.
At first, the subject matter that such electromagnetic mixing apparatus causes is that the cooling that enters the motlten metal of crystallizer lacks uniformity.
The defective of the even property of this inhomogeneous cooling can cause the crackle and the shattered crack of material internal, and except that the quality that reduces material, also can cause the difficulty of casting and throwing.
In addition, the inclination with respect to the casting Free Surface of crystallizer wall makes any gas that is absorbed in the motlten metal all be difficult to remove.Therefore, these gases are stayed in the crystallizer, and are enclosed in the strand when metal freezing.
Therefore, the strand that obtains in this way has the shattered crack defective, like this, in fact is not impossible even produce the material with superperformance, but very difficult.
In the above-mentioned patent of mentioning, because the whole vertical dimension of casting line/agitator total equipment is very big, former purpose of attempting to save the vertical space of crystallizer and casting line has not just reached.
The various calutrons that are used for casting process are disclosed in some prior aries.
The patent US-.A-3153820 of Ke Lilei (Criner) magnetic stirrer of arranging ringwise round metal base.This magnetic stirrer can be supplied with and exchange or direct current, and can be continuously and (or) sequentially, with different frequency and (or) different phase relations operations so that the mixing power of generation varying strength.
The patent J P-A-56190756 of NKK (Nippon Ko Kan K.K) disclose a pair of be fixed on one can be round the permanent affirmation on the platform dish of casting metals rotation, especially, the turntable dish can rotate round continuous cast mold.The stirring of metal is along the circumferential direction carried out.
The patent EP-A-0036611 of Con Cast discloses a kind of agitator, and this agitator is installed near the casting line, and is suspended on the quadrangle object with the chain connection, with an eccentric operation.
The patent GB-A-2103131 of SUMITOMO CHEMICAL (Sumitomo) discloses the stirring action of motlten metal in a kind of continuous casting crystallining, and this stirring is with the permanent rotary magnet among the embodiment who is similar to above-mentioned JP-A-56190756.
The patent EP-A-0009803 of Concast discloses the operating position of the magnetic stirrer that leans against the continuous casting line next door.
The patent GB-A-2013542 of Concast discloses the continuous casting line that electromagnetic mixing apparatus is installed along longitudinal direction.Particularly the purpose of this invention is in order to produce an effect, and this effect does not reach the center line of the motlten metal of cooling.Magnetic element can be provided with three-phase current and produce a variable magnetic field.
The patent DE-A-3218288 of Mannesmann (Mannesmann) discloses the magnetic stirrer that is installed near the ad-hoc location of little strand, and its mixing power laterally affacts on the strand.
The patent EP-A-0096077 of Kawasaki, Japan (Kawasaki) discloses the agitator that uses near continuous cast mold, its objective is to make liquid metals produce the lateral flow of circulation.
The objective of the invention is in order to solve the shortcoming that technology in the past produces, its method is to adopt one can satisfy small size and require and can be the continuous casting line that motlten metal in the crystallizer provides good cooling condition.
Another object of the present invention is in order to obtain the effect of best strong mixing, to obtain the requirement that casting material desirable casting and desirable solidifies to meet.
The invention provides electromagnetic generator, its use that matches with crystallizer or with secondary cooling zone (fan-shaped section of crystallizer back) with one or more snippets.
According to the present invention, such electromagnetic generator can produce the vibration effect, and this effect can obtain in every way
First method is to utilize a kind of mechanical vibrator, and this device is supporting electromagnetic generator and it is moved forward and backward.
For example, in the horizontal casting operation or have on the conticaster of straight crystallization and can implement such vibrating device by a parallelogram arrangement.
Second method is to utilize a kind of mechanical device, the one or more electromagnetic generators of this device supporting, and make its rotation continuously that matches with crystallizer.This mechanical device can be a wheel or an endless chain that has rotating ring.
The 3rd method utilized a kind of electric device, and this device can make each segmentation successive relay trip that forms electromagnetic generator as requested progressively.In the present circumstance, calutron can keep motionless.
According to the present invention, the action direction of electromagnetic generator can be identical with the direction of cast, also can be opposite.
Like this, for example electromagnetic generator can act on the intensity of maximum possible on the casting direction, and in the opposite direction may be with less intensity in the given stirring of (polarity conversion) maintenance in the other direction.
In addition,, can change the intensity of the electromagnetic action on pouring channel, make it to be suitable for the practical capacity that this effect is accepted in the molten bath according to the present invention.
And according to the present invention, electromagnetic action can stand at regional area or along the pouring channel one or many reverse of polarity.If electromagnetic generator is fixed, and be that electromagnetic generator can be immersed in the cooling chamber with electric or electronic installation is excitatory.
This cooling chamber can be independent, or the part of crystallizer cooling chamber.
In such embodiments, cooling liquid is introduced near strand and exports in the doughnut at the back side, and enters in the narrow gap in the crystallizer outside; Ratio gap is in the section difference on each side.
Therefore, can obtain different cooling liquids on different sides flows.So, follow electromagnetic action that different cooling effects is arranged.
In other embodiments, the gap can be made up of several chambers.Two chambers for example can be set, and a following chamber and a last chamber perhaps are provided with four independent chambers, one of every side.
As mentioned above, embodiments of the invention can both be controlled the different lateral of crystallization 6, make it obtain different cooling effects.
Therefore, can determine such type of cooling,, thereby make the strand performance of generation reach requirement so that obtain the booster action of compensation electromagnetic effect.
On the vibrating device that crystallizer can be connected to according to the present invention to be equipped with, and whole dimension is less.
According to this layout, can be reduced to such degree to the size of entire equipment, promptly whole casting operation line has at least a part to assemble in advance in manufactory, and transports to its installation site with the form of assembling.Equipment can be installed after arriving, and need not assemble any specific operation of each parts, as long as it is installed on the fixed support.
Can obtain the uniform product of quality with the present invention, the removal of any non-metallic inclusion and gas simultaneously becomes more easy.
Therefore, the present invention is embodied on the continuous casting line that consists of the following components, promptly by the crystallizer that can in 0～90 ° of scope, tilt arbitrarily, vibrating device and the roller conveyor composition that has one section bent fan section at least, it is characterized in that having at least an electromagnetic generator, this electromagnetic generator has the effect that can change effect.
To some embodiment that this patent is recommended be discussed by means of accompanying drawing below, this patent is not limited to these examples certainly.
Fig. 1 shows and meets the embodiment of the invention;
Fig. 2 shows the side view of embodiment according to the invention;
Fig. 3 shows the possible form in cooling gap;
Fig. 4 shows a kind of improved device of the present invention;
Fig. 5 a and Fig. 5 b show the improved form of electromagnetic generator;
In the embodiment in figure 1, casting line 10 includes a tilted-putted curved mould (seeing the figure left side)
One roller conveyor 12, it also is an arc, and and then is installed in " downstream direction " of crystallizer 11 with cooling sprayer 13.
The fan-shaped section end of roller conveyor 12 leads to throwing and straightener 14.
Shown on crystallizer 11 is the bottom pour ladle 15 that has a tilt outlet mouth of a river 16.
Crystallizer 11 is installed on the bow 18, and support 18 itself then is fixedly mounted on the rocking bar 19, and rocking bar 19 matches with elbow spare and rotates around pivot 119.
The shape of rocking bar 19 is such, and promptly it does not exceed more than the level of being determined by its pivot 119 basically.
In this way, the whole aspect ratio known device of continuous casting line 10 much smaller particularly is lower than the horizontal plane of placing bottom pour ladle 15.
Therefore, can utilize not to be extra high workshop, and the casting line can be assembled in advance and whole Transporting arrives the position of its installation.
Crank 20 is bearing in the end of rocking bar 19 with the pivot form, and is driven by an eccentric 21, and eccentric then obtains motion by motor apparatus 22 by the known transmission mode.Under this situation, device 22 comprises an electro-motor.Such motor apparatus is installed in the position that is not higher than above-mentioned horizontal plane.
The whole composite set of rocking bar 19 and motor apparatus 22 is installed on the supporting structure 23 that has the frame form.
Said as the front, this structure 23 can be fixed on all parts above it, that assembled, for example, crystallizer 11 is installed on its support 18, and rocking bar 19 is rotatably mounted on 119 and crank 20 and motor 22 are installed together.
Equally, also can be assembled in advance on the supporting structure 23 for the defeated machine 12 of the arc roller channel that draws metal base to use in manufactory.
Because its whole dimension is smaller, can whole Transporting arrive the installation site.
Fig. 2 represents the detail drawing of crystallizer 11, represents with side cutaway view.
According to this embodiment, on the not coplanar of crystallizer 11, adopt different cooling systems.
Lower chamber represents that with 31 this chamber is around the lower openings of crystallizer 11.Cooling liquid is carried in this chamber 31 by the conduit 33 of guiding fluid.
This cooling liquid flows to the wall 24 and the gap 30 between the midfeather 29 of crystallizer 11 from chamber 31.
This cooling fluid comes to this and enters in the gap 30 in crystallizer 11 outsides.
According to the present invention, gap 30 can make various forms, so that crystallization 11 obtains different cooling effects.
Fig. 3 a represents an embodiment, and its gap 30 has different cross sections.
In this way, upper wall, lower wall and the two side along crystallizer 11 can obtain different coolant distribution respectively.
Fig. 3 b represents an embodiment, and its gap 30 is made of last chamber 130 and following chamber 230 respectively, these two chambers 130 and 230 cross section can be identical also can be different.
If their cross section is identical, can separately supply with cooling fluid, for example, can see Fig. 2 to chamber 31() separated into two parts, and wherein a part communicates with gap 130, and another part communicates with gap 230.
Like this, two parts of chamber 31 will be supplied with cooling fluid respectively.
Fig. 3 c represents to have the device in four independent gaps, and last gap is 130, the gap is that 230, two side clearances are 330 down, wherein has one or more gap can supply with cooling fluid independently.
Can adopt different cross sections according to the fluid velocity that will obtain with predetermined flow gap 130,230,330.
One mistress 32(sees Fig. 2) be positioned at the outside of midfeather 29, and can assemble magnetic stirrer 25 in advance therein, the coil 125 usefulness schematic diagrames of agitator are represented.In this case, a side of crystallizer 11 has 5 coils 125, at opposite side 5 coils 225 is arranged.
For adapting to various needs, the number of coil 125,225 can change, and still, experiment shows that the minimum of a value of coil number is 3, and maximum will depend on operation and economic dispatch factor.
The field of coil 125,225 is to being scheduled to, so that produce the magnetic current of required direction in crystallizer, thereby the electric current that obtains requiring in liquid metals flows.
Coil 125,225 can adopt annular or curved surface shaped to wrap on the crystallizer, perhaps adopts L shapedly or C shape, like this, can wrap in the two sides of crystallizer 11 or three at least.
In the example of Fig. 2, coil the 125, the 225th is settled adjacent to each otherly; Wherein each coil all influences a side of crystallizer, and their assembly just can cover on two to four sides of crystallizer 11.
In the example of Fig. 2, the axis of coil 125,225 can be parallel to or perpendicular to crystallizer 11.
According to the present invention, electromagnetic generator 25 can also influence from crystallization 11 to drawbench or the part of cutter or whole zone.
The correct position of the electromagnetic generator 25 of crystallizer " downstream " part dots in Fig. 1.
With this improved device, electromagnetic generator 25 can be in the fan-shaped section work of crystallizer 11 " downstream " portion, or only in the fan-shaped section work of crystallizer 11 " downstream " portion.
In addition, can swing or be rotated by an action machinery or electricity or electronics at the electromagnetic generator 25 of the fan-shaped section of crystallizer 11 " downstream " portion.
In Fig. 5 a, electric speech generating means 25 has a coil 325 that moves along " downstream " portion casting line of crystallizer 11.Coil 325 supports by swing arm or kindred organization.
In Fig. 5 b, electromagnetic generator 25 includes many coils of arranging near casting line 12 125.These circles can or come excitatory according to an order that can the program of being compiled into reaches the requirement effect by the procedure order that weaves.
Therefore, also can enlarge range of application by modifying device and the embodiment that is used for the electromagnetic generator 25 of crystallizer 11 provided by the invention, electromagnetic generator 25 is used with the fan-shaped section of crystallizer 11 " downstream " portion, perhaps also is used with the fan-shaped section of crystallization 11 " downstream " portion.
As mentioned above, the purpose of application electromagnetic generator 25 is the even tissue that make strand.
No matter when, when electromagnetic generator 25 is used with crystallizer 11, can produce the situation that meets embodiment fully or be similar to Fig. 2.In this case, the cooling liquid by gap 30 enters cooling chamber 32 more.
In employed this scheme, make cooling fluid also cool off electromagnetic generator 25 in this way.
At last, cooling fluid is left cooling chamber 32 by liquid outlet 34.
The cooling effect that utilizes this special cooling system can make crystallizer 11 obtain being scheduled to as required adopts traditional device then can not reach this cooling effect.
The back of following chamber 31 is sealed by a behind closure 27 of being made up of plate substantially ringwise.
Must be pointed out, adopt to meet e of the present invention and answer electromagnetic mixing apparatus 25 and do not increase cumulative volume, be placed in the cooling chamber 32, need not further to enlarge volume because this electromagnetic mixing apparatus 25 combines with associated coil 125,225.
Therefore, adopt this equipment, can make the strand that leaves crystallizer 11 very even, and not reach this requirement with existing continuous casting measure line.
And the present invention just has the superiority that does not increase cumulative volume in this case.
Second advantage that electromagnetic mixing apparatus brought that employing is combined with special cooling system in cooling chamber 32 is that strand is even, can not obtain such uniformity with traditional equipment.
In this way, the electric current that produces in motlten metal flows and stirring becomes evenly motlten metal before solidifying, but also helps removing various field trashes.
As mentioned above, except a whole set of coil 125 and/or 225 among Fig. 2, or similar coil, determine according to the effect that will reach, and outside moving, magnetic stirrer 25 can mode on demand make mechanical movement according to an order that requires in casting process.
For example, in Fig. 2, the coil 125 of electromagnetic mixing apparatus 25 and/or 225 will move in order by electric power or electronic action; And in Fig. 4, hang coil 325 or a whole set of coil by method with machinery, perhaps as required, support above-mentioned coil, so that the oscillating motion that obtains requiring by an arm that on pivot, rotates 35.
If it also works in the opposite direction, it can adopt the same way as that is adopted along the motlten metal direction of motion and work, and perhaps adopts to change the polarity method in advance, perhaps by reducing or press the method for the magnetic field intensity of arbitrary velocity change generation.
We have discussed embodiment that the present invention recommends and the modifying device of this embodiment, still, also have other improved device but they do not exceed scope of the present invention.
Therefore, the shape of each part and ratio can change, and can use rocking equipment different shown in the figure 17 or use different motor 22 to that indicated in the drawings.
Also might use to have arbitrarily directed on demand coil 125,225,325 adapting to desired effect, and these coils have the number and the size of requirement.
Therefore, for violating under the scope of the invention situation, can also make these and other some improved device in portion, they all can be applicable on the continuous casting line of vertical, vertical substantially, level or basic horizontal.
Index
The 10-continuous casting line
The 11-crystallizer
12-throwing roller conveying device
The 13-cooling jet
The 14-equipment for straightening
The 15-bottom pour ladle
The 16-outlet or the mouth of a river
The 17-pendulous device
The 18-fork-shaped supports
The 19-rocking arm
The 119-pivot
The 20-crank
The 21-eccentric
The 22-motor apparatus
The 23-supporting construction
The 24-inwall
25-electromagnetic agitation or electromagnetic generator
The 125-coil
The 225-coil
The 325-coil
The 26-header board
The 126-charging aperture
27-rear enclosed device
28-crystallizer shell
The 29-midfeather
The 30-gap
The last gap of 130-
Gap under the 230-
The 330-side clearance
Chamber under the 31-
32-mistress
The 33-liquid-inlet
The 34-liquid outlet
The 35-arm
Claims (7)
1, continuous casting line (10) comprises the crystallizer (11) that is positioned at the inclination under the bottom pour ladle (15) that is limited by at least one wall (24), by motor apparatus (22) device driven (17-21) oscillating motion is delivered to crystallizer (11), a throwing roller conveying device (12) is arranged in the downstream of the crystallizer (11) of above-mentioned inclination, and comprise at least one arcuate segments, the crystallizer of above-mentioned inclination (11), device (17-21), motor apparatus (22) and throwing roller conveying device (12) all are positioned in above-mentioned bottom pour ladle (15) and are positioned under the plane, it is characterized in that: above-mentioned continuous casting line (10) further comprises an electromagnetic mixing apparatus (25), it comprises magnetizing coil (125 electronic or electronics, 225), so that produce by what the swing effect changed and press the variable magnetic current of predetermined direction, and the magnetic current of above-mentioned predetermined direction to be effect by electric power obtain, in above-mentioned crystallizer (11) and/or throwing roller conveying device (12), the metal that dissolves is guided mobile along predetermined passage, this passage is in above-mentioned crystallizer (11) and/or throwing roller conveying device (12), above-mentioned continuous casting line (10) further comprises a cooling chamber (32), above-mentioned coil (125,225) be positioned at cooling chamber, cooling liquid flows in cooling chamber, above-mentioned cooling chamber (32) comprises device (30), it is around at least one wall (24) of the crystallizer (11) of above-mentioned inclination, and one has varying cross-section long-pending and/or supply with the gap of different cooling fluids separately.
According to the described continuous casting line of claim 1 (10), it is characterized in that 2, the variable magnetic current of predetermined direction changes according to constant swing effect.
According to the described continuous casting line of claim 1 (10), it is characterized in that 3, the variable magnetic current of predetermined direction changes according to variable swing effect.
According to the described continuous casting line of claim 1 (10), it is characterized in that 4, coil (125,225) is excitatory by order.
5, require the described continuous casting line of arbitrary claim (10) in 1 to 4 according to aforesaid right, it is characterized in that, device (30) provides different cooled zones, this zone is comprised at least one gap (30 by what midfeather (29) limited, 130), 230,330), this midfeather comprises at least one chamber (32), and above-mentioned gap to small part is looped around at least one wall (24) of crystallizer (11).
6, according to the described continuous casting line of claim 5 (10), it is characterized in that, be positioned at least one wall (24) of crystallizer and the distance between the midfeather (29) and do not fix.
7, according to the described continuous casting line of above-mentioned arbitrary claim (10), it is characterized in that, device (17-21) comprises the device (18) that supports crystallizer (11), and bracing or strutting arrangement (18) pivotally is connected on the rocker arm body (19) that matches with an elbow spare (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86100380 CN1019955C (en) | 1986-02-20 | 1986-02-20 | Continuous casting line with multi-function stirrers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86100380 CN1019955C (en) | 1986-02-20 | 1986-02-20 | Continuous casting line with multi-function stirrers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86100380A CN86100380A (en) | 1987-09-02 |
| CN1019955C true CN1019955C (en) | 1993-03-03 |
Family
ID=4800992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86100380 Expired - Fee Related CN1019955C (en) | 1986-02-20 | 1986-02-20 | Continuous casting line with multi-function stirrers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019955C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825245B (en) * | 2011-06-14 | 2015-07-08 | 鞍钢股份有限公司 | spiral electromagnetic stirring device |
-
1986
- 1986-02-20 CN CN 86100380 patent/CN1019955C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN86100380A (en) | 1987-09-02 |
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