CN1027625C - Electromagnetic levitation casting equipment with improved levitation winding components - Google Patents

Abstract

An improved floating-flux winding assembly is provided which is an electromagnetic floating-flux casting apparatus with flux concentrator action, the improved floating-flux winding assembly including a plurality of slotted annular conductors surrounded by a floating liquid metal. And cooling and solidifying by following the general electric float casting (GELEC (TM)) process. Each slotted annular conductor is inductively coupled to a magnetic field-generating winding that has many more turns around itself. Each slotted annular conductor concentrates the magnetic field generated from the connected primary multi-turn windings substantially within the area of the cross-section of the tubular casting vessel.

Description

Electromagnetic levitation casting apparatus having improved levitation coil assembly

The present invention relates to a kind of through improved metal bar continuous casting equipment, particularly about a kind of electromagnetic suspension casting device with improved electromagnetic suspension coil assembly, this equipment is applied in the production of the long metal material of continuous casting, it uses United States Patent (USP) 4,414, illustrated electromagnetic suspension casting is operated in 285 " continuous casting method, equipment and the products ", above-mentioned patent is published in November 8 nineteen eighty-three, its inventor is HR Lou Rui and RT Dan Frost, and this invention has now transferred General Electric Apparatus Co.(U.S.A.).

The above-mentioned United States Patent (USP) of quoting is unique method of having utilized the suspension electromagnetic field to make the continuous casting of metal bar, overcome casting in this way during bar, bar acts on frictional force, adhesion strength and the gravity on this bar from molten condition to the curdled appearance process.For this reason, a multicircuit winding is connected to a polyphase source, so that produce a suspension electromagnetic field, this electromagnetic field works to the motlten metal post that solidifies in tubular heat exchange/casting container.This suspension electromagnetic field is a kind of electromagnetic field that occurs with the form that moves up, it had both made the motlten metal post constrain in together, make this metal column be in state of weightlessness substantially again, thereby in heat exchanger/casting container solidification zone, reduce its hydrostatic head, bar after so just can will solidifying with a kind of bar extraction mechanism constantly extracts, and said extracted mechanism acts on the bar that solidifies after heat exchanger/casting container comes out at bar.

Under the high energy hot environment operation and electromagnetic suspension casting device with above-mentioned performance structurally with some problem that also exists in service.

General Electric's electromagnetic suspension casting (hereinafter being referred to as to call GELEC(TM) method) requires to have a strong-electromagnetic field that moves up, this electromagnetic field is created in the inside of tubulose casting container/heat exchanger component, when the motlten metal post solidified, the liquid metal post was lived in this parts carry and constraint.Current this floatation device of building out in order to realize this method has utilized the 500-1000 peace electric current that passes through in 36 circle suspending windings to produce the suspension electromagnetic field.Owing to the size of the insulated conductor that designs by general reason can not be carried big like this electric current continuously, so adopt water-cooled copper to make suspending windings usually.This winding nestles up the heat exchanger outer wall, and heat exchanger is then around the tubulose casting container made from refractory material.Such winding can make the magnetic field intensity maximum in the tubulose casting container.

Needing one can be by the tubular winding of the copper of enough cooling waters, and it also will be connected with the cable of carrying exciting curent or bus simultaneously, and this can cause many problems aspect machinery and the electrical engineering.In addition, because suspending windings is made with copper pipe, its number of turn is (generally being every phase three circles) seldom, so consequent suspension magnetic is not exclusively uniformly.It is believed that this inhomogeneities can cause the appearance of uneven slightly crystal grain every now and then in the casting rod of producing in this way.

One practicable 10 to 50 kilowatts heterogeneous high frequency solid-state power source, its output voltage are roughly the 100-500 volt.The output of this high voltage low current must be with the step-down transformer of a forced air cooling or water-cooled so that be produced as the excitatory desired low voltage and high current of above-mentioned suspending windings.A high frequency 10-50 kilowatt triphase step-down transformer (perhaps three single-phase transformers) is huge and costliness, and its design and make also some difficulty.And step-down transformer that uses at present and connection feed thereof can not be entirely satisfactory for the service cable or the bus of the big electric current of suspending windings, therefore very rare a kind of fairly simple, economic design.

The present invention overcomes these difficulties with a kind of effective and economic structure.

The present invention is directed to problem discussed above, provide solution a kind of uniqueness, non-obvious by using a kind of suspending windings parts after improving, these parts have utilized a kind of magnetic flux collector of novelty.Formerly have in the technology in order to improve the service life of the multicircuit winding that is used to produce big magnetic field, once adopted the magnetic flux collector, but its not recommended as yet application is not applied in the electromagnetic suspension technology of motlten metal yet.One piece of description explanation about original magnetic flux collector is published in YB gold and the general Lay of the ED Tener paper that write, that be entitled as " the magnetic flux collector that uses in the high intensity pulses magnetic field " (seeing " scientific instrument comment ", the 7th phase of nineteen fifty-nine, 524-537 page or leaf).The United States Patent (USP) 3 of relevant " the using the eddy current tester of clearance type single turn conductive component " of issuing on March 18th, 1975,872, disclose a kind of magnetic flux collector eddy current tester, multi-form that is used in 379, its inventor is JP Wallace and BA Brooks.

The invention provides a kind of suspending windings parts motlten metal electromagnetic suspension, that adopt the magnetic flux collector that are used for, this parts are unique, non-obvious in design, it includes a plurality of clearance type ring iron cores, unshakable in one's determination round a tubulose casting container, liquid metal post in the container is according to the casting (GELEC(TM) that suspends) method suspends, and solidified by cooling.Each clearance type ring-shaped core is that induction is coupled with the winding that generates an electromagnetic field, and this winding is a winding that the number of turn is a lot of that is provided with around iron core.Each clearance type ring-shaped core role is exactly that the electromagnetic field that winding produces is focused in its circumjacent tubulose casting container on the cross section substantially, its function is the same with rising current transformer, independent clearance type ring-shaped core (or one folded thin unshakable in one's determination) and link with it, its winding that generates an electromagnetic field all around be with heterogeneous excitation power supply in respectively match, this power supply is to specialize in GELEC(TM) suspending windings parts in the method use.

Use the magnetic flux aggregation apparatus of clearance type ring-shaped core to have many important and non-obvious advantages.An advantage is the variation that it reduces or eliminated the winding induced field that causes inevitably owing to the structural variation of employed multiturn liquid cooling copper pipe.Another advantage is that clearance type ring-shaped core assembly is all incited somebody to action equably near to the cast metal post and strengthen the power of tightening or the restoring force of the electromechanics on the post, therefore can control the diameter of cast metal post preferably.In addition, having of equal importance is to have adopted the modified buoyant element of clearance type ring-shaped core magnetic flux collector to produce a higher suspension magnetic than the Low ESR device with one.This has decreased the requirement of suspending windings parts to voltage, and has reduced the demand to general power, thereby has improved electrical efficiency.For example impedance reduces by 40%, and the two all reduces by 40% can to make required driving voltage and input power.Owing to added the magnetic flux aggregation apparatus, the magnetic flux density in around field winding is sent to magnetic flux effectively assembles in the interior circle of sheet mesopore, and in the there reproduction.Magnetic flux around the field winding to this displacement of sheet mesopore inner circle (promptly approaching most the metallic surface that suspends) GELEC(TM just) the method summary of the invention that will illustrate.Will should be mentioned that at last the magnetic flux density at winding center is assembled under the situation of sheet greater than not establishing magnetic flux and assembled sheet being provided with magnetic flux, this is desirable just.Yet the more important thing is that therefrom the outer magnetic flux gradient (being the variation of magnetic flux density with distance) of mind-set is much bigger when not establishing when being provided with magnetic flux and assembling sheet.The magnetic flux gradient has been determined to act on volume pressure introversive on the suspension metal column or has been suppressed pressure, so gradient is bigger always good.

At existing GELEC(TM) in the equipment, the input impedance of suspending windings begins to carry out at casting process, molten copper liquid rises will produce very big variation when entering suspending windings/heat exchanger component.This impedance variations is that (fusion and solidify) is present in winding when inner because copper, and the variation of being coupled to the electric loading in the suspending windings causes.Because this variation of winding impedance could reach ideal value again so the suspension of setting by adjustment transformer output voltage must be adjusted after casting process begins fast around the ideal value of electric current before casting process begins.Add the magnetic flux collector and in fact just solved this problem, this is because the disk the earth to the utmost of high conductivity has reduced the impedance of field winding, thereby at this moment introduces motlten metal and just can not play what effect to the variation of field winding impedance in the mesopore of pressing close to the collector disk.Like this, the magnetic flux collector just might be set the optimum amounts of current of suspending windings more accurately before casting process begins, and this critical condition when casting process begins can also keep this optimum amounts of current.

Above-mentioned purpose of the present invention and other purposes, the advantage of characteristics of the present invention and many associations will be understood more fully by the following detailed description with accompanying drawings, and part identical in following each accompanying drawing will indicate with identical reference number.

Fig. 1 is the schematic diagram of clearance type ring-shaped core magnetic flux collector, and this collector should be used for constituting follow-on electromagnetic suspension coil assembly shown in the present.

Fig. 2 is voltage one a range performance curve, it expresses the magnetic field of a multiturn electromagnetic induction winding, and illustrate, when only having the winding of an intermediate throughholes and the winding that clearance type ring-shaped core collector shown in Figure 1 is housed therein to compare, the difference of the magnetic flux aggregation extent that they reached.

The profile of an embodiment of the modified suspending windings parts that Fig. 3 is manufactured according to the present invention.

Fig. 4 is the block diagram of the electromagnetic suspension casting device of use modified coil assembly manufactured according to the present invention.

Fig. 5 is the plane of the clearance type ring-shaped core magnetic flux collector of another kind of structure.It is to be used for the modified suspending windings parts of the another kind of pattern shown in shop drawings 6 profiles.

Fig. 7,7A and 7B are depicted as another kind of embodiment of the present invention, are applicable to the rectangular plate material of casting cross section.

Most preferred embodiment of the present invention

Fig. 1 is an end plane figure, and it expresses a clearance type ring-shaped core 11, and the multicircuit winding 12 that the excircle of this iron core 11 is made by insulated conductor is around thereon.Multicircuit winding 12 is undertaken excitatory by AC power 13.11 central authorities unshakable in one's determination form mesopores 14, and the excircle one of nonconducting slit 15 from unshakable in one's determination 11 is through to mesopore 14.Along the flow through transient current of outside elementary multicircuit winding 12 of direction shown in the arrow 16, just induction produces along the reversing the current shown in the arrow 17 on the excircle of ring-shaped core 11, because the number of ampere turns in carrying out excitatory elementary winding 12 must equate substantially with the number of ampere turns in unshakable in one's determination 11, the electric current in unshakable in one's determination 11 will be very big (this iron core is equivalent to the secondary windings of a single turn).If be not provided with nonconducting slit 15 among the figure, electric current 17 will be very big so, and because the Kelvin effect cause, electric current will mainly concentrate on the outer rim of ring-shaped core, so the electromagnetic fields that produce in mesopore 14 inside will be very little.Pass iron core and lead to after the non-conductive slit 15 of excircle unshakable in one's determination yet had, just force electric current in iron core, around 15 both sides, slit and mesopore, to flow along direction shown in the arrow 18 from ring-shaped core mesopore 14.Rely on this electric current that flows along mesopore 14 on every side, so just in mesopore 14, produce a desired strong-electromagnetic field.

In fact, elementary multicircuit winding 12 on the excircle and slit or iron core part 11 are equivalent to an electric current rising current transformer, just can produce a high electric current of low pressure that flows around ring-shaped core 11 mesopores 14 so have field winding 12 than the high pressure low current of major diameter and multiturn.Mesopore 14 diameters are more much smaller than the diameter of winding 12, therefore just produce a very strong magnetic flux in mesopore, the center magnetic flux that this just height is assembled, and it is requisite to be only enforcement suspension casting process institute.

Be appreciated that from the explanation of front the electric current in the magnetic field that is produced as the necessary suspension electromagnetic force of electromagnetic suspension casting comes down to when the inner periphery of clearance type ring-shaped core 11 mesopores 14 flows.This characteristic tool has an enormous advantage, this is to reduce owing to having inserted the clearance type ring-shaped core because produce the actual inner diameter of the field winding of suspension magnetic, this is identical with every meter number of turn as this winding, replaces but its internal diameter size equals the winding of clearance type ring-shaped core 11 internal diameters.This just makes can produce a high-intensity magnetic field with a low-impedance device, and reduces the overall power requirement of excitation power supply.Therefore, clearance type ring-shaped core 11 plays a part the magnetic flux collector, and the magnetic flux that multicircuit winding 12 produced is increased, and increases coefficient and is substantially equal to the gross area of cross section of multicircuit winding 12 divided by the value of the internal area of mesopore 14.

Utilize magnet field probe that the building-up effect of clearance type ring-shaped core assembly 11 is tested, it the results are shown among Fig. 2.Show shown in Fig. 2 dotted line, when not had the clearance type ring-shaped core assembly of assembling flux interaction, the magnetic flux density at multicircuit winding center (with gaussmeter), the solid line in the upper right corner shows insertion clearance type toroidal magnetic field collector 11 back gained measurement results.These results are to be to be wound with gained on the multiturn field winding of ten circles on 6.5 centimetres of plane rings at diameter.The external diameter of clearance type made of copper assembly 11 unshakable in one's determination should be 6.5 centimetres mutually, and the diameter of mesopore is 1.5 centimetres, and its thickness is 0.6 centimetre, and multicircuit winding is that 1 microsecond pulse of 1 KHz is excitatory by frequency.As can be seen from Figure 2, the introducing of clearance type ring-shaped core assembly 11 causes that magnetic flux has very big cumulative rises in the mesopore 14.

In the suspending windings parts of electromagnetic suspension casting (TM) equipment after improvement, the electric current that generation is used to drive the suspension magnetic of metal casting process mainly flows around the mesopore 14 of clearance type ring-shaped core assembly 11, the equipment that this multiturn that is better than using in the past drives, its advantage is exactly that current path is unrestricted, thereby the electromagnetic force of current path and generation thereof just can gather together at some position around mesopore 14, at these positions, the motlten metal post by mesopore 14 has a bigger diameter.In fact this increased the stability of the suspension electromagnetic field volume effect that plays the mold effect, and help to reduce and solidify the average deviation of bar on diameter.

Accompanying drawing 3 has been introduced an optimum structure of the suspending windings parts after improving in the suspension Casting Equipment, it has utilized a plurality of clearance type ring-shaped core assemblies as the magnetic flux collector as shown in fig. 1, figure 3 illustrates a microscler tubulose casting container 19, it is made with resistant to elevated temperatures material.As materials such as pottery, graphite, zircon sands, but be not limited to these materials.Casting container 19 is cooled off by an annular liquid-cooled heat exchanger 21, the latter directly be centered around tubulose casting container 19 around.Also be provided with a kind of cooling fluid without interruption and make its device that passes through this circular heat exchanger 21, this device spy 4 makes an explanation hereinafter in conjunction with the accompanying drawings.Liquid metal 23 is entered by the lower end of tubulose casting container 19, and constantly raises.When motlten metal 23 rises in tubulose casting container 19, owing to the effect of suspension electromagnetic field is in suspended state, and 24 places in the drawings, promptly motlten metal and frozen metal are fully cooled off at the interface.Subsequently, can extract from tubulose casting container 19 tops and become the bar 25 that solidifies.The method of back rod product 25 is solidified in extraction, will 4 elaborate hereinafter in conjunction with the accompanying drawings.Between around metal column 23 outer surfaces that suspending and tubulose casting container 19 inwalls, because electromagnetic field effect forms a very little gap (shown in 22), when liquid metal solidification, its diameter will further dwindle, thereby this gap can maintain when bar cools off.

Solidifying the device that is provided with generation electromagnetic suspension magnetic field all around in zone 24 shown in the figure.This device is made up of the suspending windings assembly of a kind of novelty of the present invention, so that produce an electromagnetic suspension magnetic field, there is the effect that reduces liquid metal post hydrostatic head in this magnetic field in solidification zone 24, and make the liquid metal post in this zone, roughly be in state of weightlessness, and can between around liquid metal outer surface of column and the casting container inwall, keep a predetermined size relationship simultaneously.For this purpose, be provided with a kind of device (will 4 explain in conjunction with the accompanying drawings in the back) that can produce and keep electromagnetic field value, so that make the size of liquid metal post 23 sectional areas enough big, this big gap can not form bigger gap to outer surface and tubulose casting container 19 inwalls all around greatly, because will cause a large amount of heat loss by between at the liquid metal post.Operate by this way, the suspending windings assembly just can guarantee that best heat exchange is arranged between liquid metal post 23 and the water-cooled tubulose casting container 19, and simultaneously can also be the frictional force that acts on the liquid metal post, and viscous force and gravity are reduced to minimum degree.From above-mentioned explanation as seen, tubulose casting container 19 not only can be used as casting container and uses, and can be used as heat exchanger and use, and therefore we are referred to as to call tubulose casting container/ heat exchanger 19,21 to these parts hereinafter.

Floatation device after the new improvement of shown in Fig. 3 this is by 11A, 11B, a plurality of clearance type ring-shaped cores shown in the 11C are formed, they are centered around tubulose casting container/heat exchanger 19, around 21, and longitudinally be arranged on the liquid metal post and need be on suspended state and that section container length cooled off simultaneously.In embodiments of the invention shown in Figure 3, each indicates 11A, 11B, and the clearance type ring-shaped core of 11C is made up of one group of stacked clearance type annular disc, these disks insulate to each other, and are structurally all similar to the clearance type ring-shaped component shown in Fig. 1.At each group 11A unshakable in one's determination, 11B, the number of clearance type annular disc 11 and thickness can change according to each concrete Design of device standard among the 11C.The iron core group 11A that each is formed like this, 11B and 11C separate with insulating part 10, to reach mutual insulating.

Each group 11A unshakable in one's determination, 11B and 11C and the winding multiturn that is associated, that generate an electromagnetic field (for example multicircuit winding 12A, 12B and 12C) induction mutually are coupled.The multiturn coil of these windings is formed around the many circles of volume back by insulated conductor, these multiturn coils can also be further selectively by cylindrical insulating surfaces 10A shown in Figure 3, the assembly 11A unshakable in one's determination that 10B and 10C are coupled respectively, the annular outer surface insulation of 11B and 11C.During work, each multicircuit winding 12A, 12B is excitatory by each exciting curent mutually with 12C, and the latter is powered by a polyphase source, and this will 4 explain below in conjunction with the accompanying drawings.Assembly 11A unshakable in one's determination, 11B and 11C will work by the mode of aforesaid rising current transformer as shown in Figure 1, so that will add to each phase winding 12A, the high voltage-small current on 12B and the 12C converts a low-voltage, high-current that flows to around mesopore 14.This big electric current produces a magnetic flux that passes the gathering of each group mesopore unshakable in one's determination, and acts on the liquid metal post 23 in tubulose casting container/heat exchanger 1921.Because each coil assembly 12A, the cause of 12B and the excitatory phase place of 12C, produced an electromagnetic wave that moves up, this electromagnetic wave acts on the liquid metal post 23 that solidifies in the zone 24, make the liquid metal post in this zone be in state of weightlessness, and to make gap between liquid metal post 23 outer surfaces and tubulose casting container/heat exchanger 91,21 inner surfaces be minimum.

See also Fig. 4, motlten metal to be cast leaves (not shown) in the holding furnace in, send in the casting crucible 31 by direction shown in the arrow among the figure 32 by holding furnace then, make molten metal reach desired reference altitude, so that the liquid level of liquid metal in casting container parts 35 remained on the desirable height, casting container parts 35 are the tubulose casting container/heat exchangers 19 by as shown in Figure 3,21 and clearance type ring-shaped core assembly 11A, 11B, the multicircuit winding 12A of 11C and outside, what 12B and 12C constituted.Casting container parts 35 are installed on the casting crucible 31, the vertical direction of parts 35 has an opening, new mint comes out solidifies rod product 25 and will be extracted away by an extraction element by this opening, and after middle chilling station 36A sends into precooling station 36, rod product 25 usefulness of solidifying after the precooling that will newly cast out again from the precooling station are extracted roller 37 and 38 and are delivered to tandem hot-rolling mill 39 and 41 (so doing if require), at last it is cooled to room temperature, and roll up at coiling station 42 coileds, also can extract so that store and be transported to the user place or solidify bar 25 by extracting roller 37 and 43, be cooled to room temperature and just store, do not do any further processing.

During work, motlten metal moves in the casting container parts 35 from casting crucible 31 under the gravity that the liquid from the holding furnace (not shown) flows or under the pressure with the form of liquid metal post 23 shown in Figure 3.Holding furnace can be discontinuously, and (according to continuous casting time needs) is to the metal of casting crucible transporting molten perhaps serially.Motlten metal post 23(Fig. 3) comes to this and begin to set up, and remain on afterwards on such level, the electromagnetic wave that moves up that promptly utilizes the suspending windings parts to produce on this level just can reduce effectively, even eliminates the hydrostatic head of this fluid column.The suspension electromagnetic wave that moves up is to produce by the mode shown in above-mentioned Fig. 3, be the result of heterogeneous exciting curent effect, and heterogeneous exciting curent is to be transported to each multiturn electric induction winding 12A by three-phase alternating-current supply and controller 26, on 12B and the 12C.Controller 26 can be controlled respectively independently by the frequency control circuit 27 and the power control circuit 28 of known configurations.

Although for the sake of simplicity, in Fig. 4, adopted the three phase mains structure, preferably adopt the suspending windings parts of six phase excitation modes.Yet for those skilled in that art, obviously he also can adopt other multi-phase power supply system and winding construction.For example, as shown in Figure 6,12 multicircuit winding 12A, 12(-B '), 12C, 12(-A '), 12B and 12(-C ') (these six multicircuit winding repeat once just to become 12 again) be centered around around the improved suspending windings 35 and vertically the compartment of terrain install, its winding roughly with the axis normal of casting container/heat exchanger tube 19.These windings are electrically connected between mutually so that form a kind of sequence arrangement, two six phase winding systems.On physical significance, this system expands to the length of two wavelength under the winding magnet excitation frequency, thereby is decided by the length of floating zone.Explanation this class layout in diagram ground among Fig. 5 of the United States Patent (USP) of quoting in front 4,414,285, but be to illustrate that as a kind of ten two-phase systems the present invention has adopted the disclosed content of above-mentioned United States Patent (USP) fully there.If only want with six independent phase winding systems, a wavelength of this system's extension winding magnet excitation frequency, the multicircuit winding 12A shown in Fig. 6 so, 12(-B ') or the like number will reduce, be reduced to a single group winding, and cancelled to being electrically connected that second group of winding goes.For those skilled in that art, owing to be subjected to the inspiration of top disclosure, they can adopt the interconnected set of three interconnected set, four interconnected set or the combination of other phase windings apparently.

Above-mentioned improved heterogeneous suspending windings parts produce an electromagnetic wave that constantly moves up, distance before and after its speed that moves is proportional between flux circuit and excitatory frequency.Elementary multiturn field winding 12A, 12B and 12C are vertically upward arranging along suspension duct member 35, therefore, except that suspension duct member 35 minimum that part of, whole liquid metal post and the finished product that newly solidifies are in state of weightlessness haply in whole casting process.At this moment liquid metal post 23 is zero at the hydrostatic head that solidifies in the zone of the pipe 35 that suspends, so the liquid metal post is to be under the stress-free state basically.There is not pressure, this just means at the liquid metal outer surface of column does not have real continuous pressure to contact with casting container 19 inwalls all around, and in critical solidification zone 24, the liquid metal post does not have any pressure head, and frictional force, viscous force and gravity that the result acts in solidifying the zone on the fluid column face that is just solidifying all reduce to minimum degree.

In order to limit the size of Casting Equipment, particularly limit the length of suspension duct member 35, keep the weightless desired input power of liquid metal post in the whole solidification zone in order to reduce, be minimum, wish to improve the efficient of heat exchange as far as possible.In fact a kind of cooling condition of approximate water quick cooling is provided at the heat exchanger shown in Fig. 3, because this heat exchanger can be enclosed in the liquid metal post that is rising a kind of continuous (when operation) effectively, flow fast, turbulence type but jet flow cross section very in the liquid stream of circlet shape cooling fluid, this cooling fluid is drained from the drainpipe 34 of bottom from 33 inputs of upper end water inlet pipe.It is high (cylindrical form interior surface of the circular heat exchanger made from stainless steel or other similar materials 21 is bearing on the graphite-pipe exactly) that hot-fluid passes closely spaced efficient between liquid metal post 23 and the graphite-pipe all around 19.If in annular cooling chamber 21, add short interior to annular convex rib, the resistance that this just increases laminar flow makes cooling fluid pass from last water inlet pipe 33 and is turbulent condition when heat exchanger flow to the drainpipe 34 of bottom downwards, thereby further strengthens heat-exchange capacity.

The internal diameter of the graphite-pipe of casting container shown in Fig. 3 19 and the operational factor of system, such as frequency, the field intensity etc. of suspension electromagnetic field of moving up is selected like this, promptly at the interface 24 limit solidify in the zone, the annular gap (shown in 22) that forms between the inner surface of casting container 19 and liquid metal post 23 outer surfaces should be as far as possible little.This solidifies at the liquid metal post and causes that also set up at the position below the fluid column sectional area dimensional contraction place, though this contraction is very little.The gap of 22 representatives just illustrates among Fig. 3, does not accurately represent value or its position of this annular gap.If at the solidification zone lower slightly that neutralizes, the words that the volume effect that permission produces owing to the suspension electromagnetic field that moves up makes this gap become very big, do the heat exchanger effectiveness that just can seriously reduce between liquid metal post 23 and the tubulose casting container/ heat exchanger 19,21 so like this.This is because event of very strong inverse relation is arranged between field intensity and rate of heat exchange.Therefore, when the casting beginning, will adjust the field intensity of the suspension electromagnetic field that moves up,, set up a kind of no pressure contact condition, and make the gap minimum of generation simultaneously again, thereby in this critical zone, obtain desirable heat exchange in solidification zone so that as described above.Then, field intensity should be remained on the level of this setting value, in whole casting process, should not change again, even no exception during through translational speed (linear velocity) change of the liquid metal post of suspension duct member and the frozen metal finished product that casts out.

From the continuous casting process of a reality, the temperature of the rod product that solidifies is considerable, and it must maintain in the narrower scope.For example, if the rod product of casting is a copper, and its temperature is when surpassing 1000 ℃ (incandescent shape), and then at this moment above-mentioned finished product is very fragile, so that can not support self, can not transmit the required tension force of mobile bar, this mobile finger be exactly the casting bar to be exported from the suspension duct member by extracting roller 37,38, pre-quench chamber and the 36A of fore-cooling room then by selecting for use, 36.Otherwise, when if bar temp is lower than 850 ℃, then this bar temp is low excessively, so that be unwell to and carry out " hot rolling ", if wish to obtain the solidification material of fine grain uniform formation,, so just might carry out " hot rolling " operation so that the cold drawn operation in road (cold-working) provides optimum duty down, " hot rolling " operation can be selected for use being furnished with series connection and rolling and roll 39,41 " hot rolling " and carry out.From the price and the easy consideration of technology of whole system, will be a very big advantage so as might not using equipment of hot rolling.Be worth rejoice and unexpectedly, acutely shaking and stirring action of suspension electromagnetic field makes the casting bar have a kind of tissue of medium-grain degree, and this just makes casting material can directly bring application.For this application, use the cooler 36 of a kind of aerosol type shape or cloud zero shape on suspending windings/ heat exchanger component 35,36A aligns the bar that solidifies that casts out and carries out " quenchings ", subsequently, by extraction roller 37 and 43 bar is directly sent into and to be coiled device or coiling machine.

Because above-mentioned some reason, here recommend a kind of method, this method is exactly to control the speed (being the linear velocity of liquid metal through moving in the suspension duct member 35) of casting by drive motors shown in the control chart 4, that be used for driving extraction roller 37,38.Should calculate a calculated value at the concrete size and the resistivity of cast metal, determine the field intensity and the magnet excitation frequency of suspension magnetic according to this calculated value, so that resemble United States Patent (USP) the 4th, 414, described in No. 285 like that, can obtain a suspensibility and be 75% to 200%, magnet excitation frequency is the magnetic field of certain value.Then, in the whole service process, the two all should remain unchanged the magnet excitation frequency through selecting and the field intensity of suspension electromagnetic field.

As indicating among Fig. 3, multicircuit winding 12A, 12B and 12C make with common high-temperature insulation lead, because the current value ratio that they flow through is more moderate, therefore they self needn't use cooling fluid formula heat exchanger to cool off respectively, yet may need with the forced air cooling method it to be cooled off.Certainly, clearance type ring-shaped core 11 be in close proximity to circular heat exchanger water jacket 21 near, and big conductive cross-sectional area is arranged, although therefore have very big electric current to pass through, iron core still can keep a moderate moisture.Form ring-shaped core 11A, 11B, the thickness of the clearance type ring segment of 11C, can in very large range be adjusted,, but can be estimated so that strengthen its ability by electric current, for every phase, the multicircuit winding parts of each clearance type ring-shaped core need adopt 2-3 sheet ring segment at least, and this is in order to set up one than uniform electric magnetic field in the whole mesopore that passes through at tubulose casting container/ heat exchanger 19,21.

Not necessarily must align in vertical direction in formed slit 15 in the ring plate of forming the clearance type ring-shaped core, insulate each other because form ring plate unshakable in one's determination.But, can be mutual like this between the ring plate directed each other, can make the distortion (if any) in the whole magnetic field of bringing by these slits for minimum.To those skilled in the art, he obviously can see, clearance type ring-shaped core assembly 11A, the cross section of the mesopore of 11B and 11C etc. can be any shape, for example oval, the cross section figure that hexagon or other hope obtain can both be used for casting out the rod product with similar cross-section.Equally, the outer circumferential shape of clearance type ring-shaped core is not necessarily circular, also can be oval-shaped, hexagon or other shapes that needs.

The outer surface of clearance type ring-shaped core magnetic flux collector is not necessarily very smooth, only demand its corresponding multiturn field winding and coupling preferably can be arranged just, the groove that annular can be arranged on whole outer surface, if adopted a single continuous multicircuit winding, then can cut a continuous helicla flute on the outer surface.Which floor in addition, according to effective engineering practice, wish to encourage winding 12A, 12B, 12C with the multiturn that replaces several layers circular cross-section lead coiled with the conductor in one deck or square-section or rectangle cross section.This class formation can make between the magnetic flux collector of field winding and clearance type ring shape iron core effectively, and air-gap reduces to minimum degree.When high-frequency excitation, said structure can also have some other benefits, for example reduces capacitance.Because the rectangle conductor has bigger effective conductive area, so the thermal losses I of the field winding made from it ²R is than little with the winding of round insulation lead coiled.When manufacturing outer field winding conductor, the selection of multiturn insulating materials also is a major issue in the good engineering construction, the insulating materials or the insulating tape that for example use the high temperature lacquer envelope curve or make with polymeric material, or use the high temperature insulating material of development newly can both make winding not need the price and the complexity thereof of cooling device or reduction coil assembly cooling device.

Enlightenment according to the above description, those skilled in the art can make some other reform and change to magnetic flux collector structure.For example, can be with ferromagnetic material such as high temperature iron oxysome part of extraordinary shape etc., join in the structure of elementary field winding clearance type ring-shaped core magnetic flux collector parts and go.Can expect, the electric field under the winding of buoyant element bottom, because it has a distance from the interactional electric field that other windings produce, so its effect is as single-phase electric field, this single-phase electric field has the effect that the liquid metal post moves up of resisting.If the ferromagnetic iron oxysome assembly that is in stacked feature bottom is processed into suitable shape and is placed on suitable position, just can reduce the effect of this resistance.In addition, if the mesopore in the magnetic flux collector flat board of clearance type ring-shaped core assembly has adopted noncircular cross section, just the forming assembly of the ferromagnet Ferrite Material of suitable configuration can be put in the above-mentioned parts with clearance type ring-shaped core assembly and be gone, so that the electromagnetic field that the magnetic flux collector is produced is shaped into desirable electrical field shape.Hereinafter will make an explanation to this structure in conjunction with Fig. 7.Another kind of magnetic forming method can so just can force those to enter a current channel that can produce the optimum magnetic field shape by the mobile electric current of undesirable mode by cutting some sections or locating more additional slits and realize around clearance type ring-shaped core assembly inside and outside.In order to reach the purpose that makes magnetic field become definite shape, be to remove some section or additional slit on clearance type ring-shaped core assembly, can lose some magnetic fields but do like this, and increased dull and stereotyped reactance, therefore the method for this profiled magnetic field is more less better than the method that the use ferrite changes magnetic field shape, although well-known ferrite spare is non-linear in radio-frequency field.

From having the technological design of good behavior in service, be desirable to provide a kind of suspending windings parts with novel improved of following design, promptly one group have certain fixedly the elementary multiturn field winding of mesopore cross section can be used with multiple clearance type ring-shaped core magnetic flux collector-heat exchanger, the latter's mesopore has various diameter, but the profile of its cross section and area remain unchanged.In the suspension casting technique, use the user of the suspending windings parts of the novel improved that constitutes by this method to need only the inner clearance type ring-shaped core magnetic flux collector-heat exchanger component of change, and need not change or change outer field elementary multiturn field winding, for example just casting out, diameter is the bar of 5-8 millimeter.

Point out that in last joint the mesopore cross section in magnetic flux collector assembly unshakable in one's determination can not be a circular cross-section.Fig. 7 has introduced this class device among 7A and the 7B.Fig. 7 is a top view, and it only illustrates an a kind of phase winding of device, this device be suitable for use in have the square-section (as Fig. 7 and 7A 59 shown in) motlten metal make the occasion of sheet material.Because used be substantially rectangle magnetic flux aggregator component 55(it have the slit 58 shown in a microscler rectangle mesopore 61 and Fig. 7 and the 7B) cause, so the cross section of molten metal sheet 59 becomes rectangle, rectangle magnetic flux collector 55 is placed in the outer elementary multicircuit winding, and this can see too clearly in Fig. 7 and Fig. 7 B.In order to improve the magnetic field shape of from magnetic flux aggregator component 55, sending, with many non-conductors, promptly indicate the upper and lower surface that 57 ferrite lamina is placed on elementary multicircuit winding 56 and magnetic flux aggregator component 55 among the figure, this can know in Fig. 7 A and see.Ferrite lamina has the sort of special trapezoidal shape shown in Fig. 7, and this is for one side long on the plane section of molten metal sheet 59 gathers together magnetic flux, and therefore such this plate just as shown in Figure 7 has a square-section that is planar shaped substantially.Similar with Fig. 3 and embodiment shown in Figure 4, with a graphite liner, form casting container/ heat exchanger 19,21 water-cooled or heat exchanger are placed on clearance type ring-shaped core assembly 11A, between the magnetic flux collector that 11B and 11C form and the molten metals in liquid state post 23 of suspension.In this structure, can generate bigger electric current in the oil-to-water heat exchanger and cause sizable loss, so this point is noticeable.For fear of this loss, the invention provides a kind of most preferred embodiment, see also Fig. 5 and Fig. 6.

Explanation according to Fig. 6 can see with the 11 clearance type ring shape iron core magnetic flux collector plates that indicate fine mechanical strength and rigidity being arranged.If a kind of heat conduction of magnetic flux collector 11 usefulness unshakable in one's determination is good, and can provide the metal of electric insulation to make each other at assembly unshakable in one's determination, so this iron core part just can reach a large amount of heat the cooling fluid that flows in last water inlet pipe insulated from each other 33 and the following drainpipe 34, this cooling fluid is flowed through and indicate 51 among Fig. 5, a succession of cooling hole that forms on each assembly unshakable in one's determination.In this structure, the tubulose casting container can be made of refractory-lined container, the material of refractory liner can be, as graphite, zircon sand, tantalum-zirconium-molybdenum alloy and materials similar, container directly is fitted in clearance type ring-shaped core 11A, 11(-B '), the inwall of mesopores such as 11C 14, these liquid-cooled clearance type ring shape iron core magnetic flux collector parts 35 of forming unshakable in one's determination.The method of operation of parts 35 is identical with the magnetic flux collector parts 35 described in Fig. 4.Yet, in Fig. 5 and parts shown in Figure 6, space between the suspension liquid metal column 23 in the inner periphery of clearance type ring shape iron core magnetic flux collector parts and the tubulose casting container parts 19 has reduced, this has just improved the electromagnetic coupled of liquid towards metal column greatly, and has reduced the heat exchanger component internal cause shown in Figure 3 loss that eddy current brought of inducting.In addition, owing to remove the circular heat exchanger parts 21 that install among Fig. 3, the price of whole parts has been reduced.

Also be further noted that each clearance type ring shape iron core magnetic flux collector 11A, 11(-B ' for Fig. 6), 11C etc. include a thick monolithic iron core, the roughly connected elementary multicircuit winding 12A of these axial dimensions unshakable in one's determination, 12(-B '), the axial dimension of 12C etc. is identical.These multicircuit winding are excitatory by-three phase mains and controller 26 respectively, and the method for introducing by the front and be connected with three phase mains and controller with reference to the Fig. 5 in No. the 4th, 414,285, the United States Patent (USP) of being quoted.

Suspending windings after the improvement and heat exchanger component should be designed to like this, around soon clearance type ring-shaped core assembly will be pressed in the coupled elementary multiturn driving winding, and coupled elementary multicircuit winding, tubular fire liner 19 and adjacent insulation such as assembly unshakable in one's determination., can estimate that clearance type ring-shaped core assembly in Fig. 6 structure 11 is made by soft aluminum, for example adopts aluminum 1100 for this reason.Can in each clearance type ring-shaped core assembly, get out or cast out coolant channels 51, carry out anodized with known electrochemical method then.The result that anode is handled is that to produce a layer thickness on the whole exposed surface of aluminum products be 2/1000 inch oxide-film.This oxide-film makes each clearance type ring-shaped core assembly insulated from each other, and makes the coupled elementary multiturn of these assemblies unshakable in one's determination drive winding and 19 insulation of tubular fire liner.With stacked clearance type ring-shaped core assembly 11A, 11(-B '), the 11C equipressure is fitted together, and makes each cooling duct aim at and make the tight water seal of formation between each assembly unshakable in one's determination.Because the cooling channel inner surface equally also has the insulating barrier of one deck aluminium oxide, so cooling fluid can not form short circuit between adjacent assembly unshakable in one's determination.If need to insert in can each opening 51 behind aligning the pipe of copper, aluminium or other materials, thereby and then make it to expand to form and be press-fitted.This further guarantees not have the escape phenomenon between the adjacent assembly unshakable in one's determination.Anode oxide film can prevent that copper or other metal tubes from forming short circuit between clearance type ring-shaped core assembly.

As seen from the above description, it is insulated from each other to utilize the anodized aluminum film to make between each clearance type ring shape iron core magnetic flux aggregator component, thereby the electric current that produce, that produce strong magnetic flux of induction all around in hole 14 just can be controlled respectively within it, so that produce desirable moving up, be to realize suspension casting method (GELEC(TM)) desired suspension electromagnetic field.In addition, well-known, the anodized aluminum film is because of its very thin thickness, and its thermal resistance is very little.So, the cooling characteristics that parts provided shown in the cooling characteristics of assembled suspending windings structure and Fig. 3 can be equal to, even can be more better than the latter.If needs are arranged, when moulding unshakable in one's determination, can adopt other aluminium, for example aluminium 2024, but wanting of its resistance ratio aluminum 1100 is high, thereby when the suspending windings parts move, can cause bigger loss.

If determine, the parts improved, that produce suspension magnetic of this class shown in Fig. 5 and Fig. 6 are still improper to the cooling of some product, just can add cooling way again outside path 51.Need in the clearance type ring-shaped core assembly of structure shown in Figure 3, adopt this additional liquid cools path, though use the magnetic flux collector of clearance type ring-shaped core assembly type can expect that one of benefit of obtaining is the conductor that need not to use the band water-cooled in the suspending windings parts for this reason.To clearance type ring-shaped core assembly type magnetic flux collector air cooling shown in Figure 3, water-cooled or other certain cooling fluid are cooled off possibly.This class cooling so just joins this class cooling channel shown in Figure 5 in the clearance type ring-shaped core assembly shown in Figure 3 if desired.This class cooling channel should be placed on the place that has with a certain distance from the inner ring and the outer ring of each assembly unshakable in one's determination, and this distance is equivalent to the degree of depth of some kelvin effects, so that the electric current of unlikely obstruction or change generation suspension magnetic is mobile.

Because above-mentioned reason, the cooling channel that finally may limit such as 51 is assembled quantity in the assembly unshakable in one's determination at each clearance type annular magnetic flux.If it is right proving such restriction, and be to realize that the suspension casting process still requires additional cooling, so at this moment assembly unshakable in one's determination can be hollowed out, so that adopt as United States Patent (USP) the 3rd, 872, the annular cooling channel of being introduced among Fig. 9 of No. 379-16.Between the clearance type ring-shaped core parts of stacked composition, the annular channels of Xing Chenging can link up mutually by 51 such interconnected holes shown in Fig. 5 like this.Design proper and adopt the assembly unshakable in one's determination 11 of anodized magnetic flux collector can remove heat-resisting liner in the casting container 19.For those skilled in that art, resulting enlightenment can propose some other improvement and change to obtain desirable amount of cooling water according to above-mentioned content of separating for they.

The present invention introduces a kind of electromagnetic suspension casting device with improved suspending windings parts, and this equipment is used to cast continuously elongated metal finished product, as the different alloy bar material of copper rod, aluminium bar, nickel rod and these metals and other metals composition.

Introduced the electromagnetic suspension casting device that has modified suspending windings parts according to the present invention some embodiment; can be adjacent under this literary composition inspires; those skilled in that art will make new improvement and change to the present invention; therefore should be understood that; in each specific embodiment of foregoing invention, can make a lot of changes, but all within the desired protection domain of claim of the present invention.

Claims (27)

1, a kind of electromagnetic suspension continuous casting equipment comprises: vertical put, a tubulose casting container microscler, that be installed in liquid metal to be solidified; Liquid metal is imported the device of said vesse bottom; Be used to cool off and solidify the wherein heat-exchange device of liquid metal with described container adjoins; Portion extracts the device that solidifies the back metal from container; And the device of the generation suspension electromagnetic field that on its partial-length, is provided with around the casting container, this device is used for reducing the pressure head of liquid metal post, and between around the outer surface of liquid metal post and the casting container inwall, keep predetermined size relationship, make simultaneously gravity again, the frictional force and the power that sticks are reduced to minimum level, it is characterized in that, the device of described generation suspension electromagnetic field comprises the magnetic field aggregation apparatus of being made up of a plurality of clearance type ring-shaped cores that are centered around on the casting container partial-length, the liquid metal post is in suspended state in above-mentioned partial-length, each iron core all is coupled with the winding induction that generates an electromagnetic field accordingly separately, this winding is a multicircuit winding round iron core, the magnetic field that just this winding produced of each iron core gathers on the interior cross section of its circumjacent that part of tubulose casting container basically like this, and each iron core plays a part rising current transformer.

2, equipment according to claim 1, it is characterized in that, the device of described generation suspension electromagnetic field comprises a plurality of electromagnetism windings that join with each order of a multi-phase AC power, so that produce an alternating electromagnetic field that moves up, and be provided with an independent clearance type ring-shaped core at least and respectively the matching of the winding that generates an electromagnetic field accordingly and described multi-phase AC power, every mutually in each clearance type ring-shaped core all insulate each other.

3, equipment according to claim 2 is characterized in that, described and the clearance type ring-shaped core that respectively matches and formed suspending windings parts with the winding that generates an electromagnetic field of its induction coupling.

4, equipment according to claim 2 is characterized in that, described clearance type ring-shaped core with the winding that the generates an electromagnetic field induction coupling that respectively matches is made of in groups the clearance type ring segment closed assembly of mutual insulating.

5, equipment according to claim 1, it is characterized in that, described heat hands over device to comprise an annular liquid cooling heat exchanger, it nestles up around the tubulose casting container in being provided with the tubulose casting container zone that produces the suspension electromagnetic field device, this tubulose casting container also comprises a device of continuously annular liquid cooling heat exchanger being supplied with cooling fluid in annular liquid cooling heat exchanger is placed on the mesopore of clearance type ring-shaped core in the device that generates an electromagnetic field, that form the magnetic flux collector.

6, equipment according to claim 1, it is characterized in that, described heat-exchange device partly is made of the clearance type ring-shaped core, the latter is tight outer wall surface around the tubulose casting container in the zone that is provided with generation suspension electromagnetic field device of casting container, and mechanically contact with this outer surface and carry out the heat conduction, but be electric insulation to each other, be provided with the path by cooling fluid in described clearance type ring-shaped core, also including can be toward the continuous device of supplying with cooling fluid in this path.

7, equipment according to claim 2 is characterized in that, described tubulose casting container is the roughly consistent fire resisting material tube of an internal diameter, and this container also comprises a crucible of preserving motlten metal, and this crucible is connected with the casting container bottom; The holding furnace that links to each other with crucible, this holding furnace can be set up the liquid metal post, and makes it to be moved upwards up to a certain height place in the tubulose casting container, and this highly is higher than the lower end that produces the suspension electromagnetic field device; The device that keeps electromagnetic field value, this device make the size of sectional area of liquid metal post even as big as preventing in the big gap of generation between the outer surface of fluid column and casting container inwall; Extract the speed of solidifying back metal finished product from tubulose casting container top with control and control the device that solidifies finished product productivity ratio.

8, equipment according to claim 7, it is characterized in that, the power output of described multi-phase AC power and frequency can be controlled adjustablely, so that produce the suspension electromagnetic force that equilibrium moves up according to the concrete condition of cast metal type and size.

9, equipment according to claim 8 is characterized in that, described and the clearance type ring-shaped core that respectively matches and formed suspending windings parts with the winding that generates an electromagnetic field of its induction coupling.

10, equipment according to claim 9, it is characterized in that, described heat-exchange device comprises an annular liquid cooling heat exchanger, it is being provided with of casting container is close to tubular casting container in the zone that produces the suspension electromagnetic field device around, described tubular casting container and annular liquid cooling heat exchanger all are placed in the center porose area of clearance type ring-shaped core, and the latter has constituted the magnetic flux collector; Supply with the device of cooling fluid in can annular in the past liquid cooling heat exchanger continuously.

11, equipment according to claim 9, it is characterized in that, described heat exchanger partly is made of the clearance type ring-shaped core, being provided with in the zone that produces the suspension electromagnetic field device of casting container, above-mentioned ring-shaped core is tightly around the outer surface of casting container, and contacting of machinery arranged and carry out heat conduction with this surface, but keep electric insulation with them, in above-mentioned clearance type ring-shaped core, be provided with the path that the confession cooling fluid is passed through; Be provided with the interior cooling channel of past these clearance type ring-shaped cores device of supply cooling fluid continuously.

12, equipment according to claim 8 is characterized in that, for every phase, the described clearance type ring-shaped core that is coupled with the winding induction that generates an electromagnetic field is made up of the clearance type ring segment closed assembly that is electrically insulated from each other.

13, equipment according to claim 12, it is characterized in that, described heat-exchange device comprises an annular liquid cooling heat exchanger, it is provided with in the zone that produces the suspension electromagnetic field device casting container, tightly around tubular casting container, described tubular casting container and annular liquid-cooled heat exchanger all are in the araea porosae mesonoticae of annular gap type iron core, and ring-shaped core is the electromagnetic flux field concentrator of an electromagnetic field generation device; Make cooling fluid pass through the device of this annular liquid-cooled heat exchanger continuously.

14, equipment according to claim 12, it is characterized in that, described heat-exchange device partly is made of the clearance type ring-shaped core, being provided with in the zone that produces the suspension electromagnetic field device of casting container, above-mentioned ring-shaped core is tightly around the outer surface of casting container, and be contacting of machinery and carry out heat conduction with this outer surface, but keep electric insulation with it, in described clearance type ring-shaped core, be provided with the path that circulates for cooling fluid; Be provided with the interior cooling channel of past these clearance type ring-shaped cores device of supply cooling fluid continuously.

15, equipment according to claim 8 is characterized in that, it also comprises the pre-cooler that the frozen metal finished product that comes out from the casting container top is carried out precooling; It is rolled into the device of desired size; And rolling good finished product is cooled to normal temperature so that store and the device of next step use.

16, equipment according to claim 8 is characterized in that, it also comprises makes the metal finished product that solidifies be cooled to room temperature so that the device of storage and next step use.

17, equipment according to claim 2 is characterized in that, it also comprises: a device of setting up electromagnetic field intensity, this device make the suspensibility of liquid metal of unit weight between 75% to 200%; The generate an electromagnetic field adjusting device of magnet excitation frequency value of device of adjustment, this device can be adjusted frequency in a frequency range; The crucible of a storage motlten metal that is connected with tubulose casting container bottom; Link to each other with described crucible so that form the liquid metal post and make it to enter a holding furnace of tubular casting container lower end, this holding furnace is moved upward to fluid column to be higher than certain height that produces suspension electromagnetic field device bottom; A control size of current, therefore and the generate an electromagnetic field control device of the magnetic field intensity that device produced of control and, this device is used for controlling the suspensibility of this equipment; Utilize control to extract the device that the speed of solidifying back metal finished product is controlled its productivity ratio from the casting container top.

18, equipment according to claim 17 is characterized in that, described and the clearance type ring-shaped core that respectively matches and formed suspending windings parts with the winding that generates an electromagnetic field of its induction coupling.

19, equipment according to claim 18, it is characterized in that, described heat-exchange device comprises an annular liquid cooling heat exchanger, it in the tubulose casting container is provided with the zone that produces the suspension electromagnetic field device tight around the tubulose casting container around, described tubulose casting container and annular liquid cooling heat exchanger all are positioned at the mesopore of the clearance type ring-shaped core of composition magnetic flux collector; Toward the interior device of supplying with cooling fluid continuously of annular liquid cooling heat exchanger.

20, equipment according to claim 18, it is characterized in that, described heat-exchange device is partly to be made of the clearance type ring-shaped core, the latter is provided with in the zone that produces the suspension electromagnetic field device casting container, tight outer wall around casting container, and carry out heat conduction with this outer wall, but be electric insulation to each other, the path that passes through for cooling fluid in the clearance type ring-shaped core, be provided with; Also being provided with can be toward the continuous device of supplying with cooling fluid in this path.

21, equipment according to claim 17 is characterized in that, for every phase, the described clearance type ring-shaped core that is coupled with the winding induction that generates an electromagnetic field is made up of the clearance type ring segment closed assembly that is electrically insulated from each other.

22, equipment according to claim 21, it is characterized in that, described every winding that is used for generating an electromagnetic field mutually has a mesopore, be provided with the different clearance type ring-shaped core of a plurality of designs in this araea porosae mesonoticae, the size and dimension of its profile is a standard, match with the mesopore of winding, but the shape of its mesopore and/or size are different that mesopore unshakable in one's determination has determined to install the space size of tubulose casting container.

23, equipment according to claim 8, it is characterized in that, described every winding that is used for generating an electromagnetic field mutually has a mesopore, be provided with the different clearance type ring-shaped core of a plurality of designs in this araea porosae mesonoticae, the size and dimension of its profile is a standard, match with the mesopore of winding, but the shape of its mesopore with/size is different, mesopore unshakable in one's determination has determined to install the space size of tubulose casting container.

24, equipment according to claim 21 is characterized in that, it also comprises the pre-cooler that the frozen metal finished product that comes out from the casting container top is carried out precooling; It is rolled into the device of desired size; And rolling good finished product is cooled to room temperature so that the device that stores and use.

25, equipment according to claim 21 is characterized in that, it also comprises makes the metal finished product that solidifies be cooled to room temperature so that the device that stores and use.

26, equipment according to claim 2 is characterized in that, it also comprises the pre-cooler that the frozen metal finished product that comes out from the casting container top is carried out precooling; It is rolled into the device of desired size; And rolling good finished product is cooled to room temperature so that the device that stores and use.

27, equipment according to claim 2 is characterized in that, it also comprises makes the frozen metal finished product be cooled to room temperature so that the device that stores and use.

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