CN202106027U - Tundish with electromagnetic heating water gap - Google Patents
Tundish with electromagnetic heating water gap Download PDFInfo
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- CN202106027U CN202106027U CN201120207919XU CN201120207919U CN202106027U CN 202106027 U CN202106027 U CN 202106027U CN 201120207919X U CN201120207919X U CN 201120207919XU CN 201120207919 U CN201120207919 U CN 201120207919U CN 202106027 U CN202106027 U CN 202106027U
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- tundish
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- General Induction Heating (AREA)
Abstract
The utility model relates to a tundish with an electromagnetic heating water gap, which is a tundish capable of adjusting and controlling the temperature of water gap flow by installing a special electromagnetic heating water gap at the bottom of a ladle body; one or more electromagnetic heating water gaps can be arranged at the bottom of the ladle according to the requirement to form a tundish capable of independently controlling the flow temperature of each water gap; the tundish is high in heating efficiency, and can independently adjust and control the temperature of each pouring flow, so that the aims of achieving the optimal pouring temperature, avoiding water gap blockage, achieving low-superheat-degree pouring and improving the quality of a casting blank are fulfilled; the tundish can be widely used for metallurgical continuous casting production, in particular to the production of continuous casting billets with multi-flow, multi-flow and large and super-large sections; the temperature control is accurate, the controllability is high, the operation cost is low, the product quality can be obviously improved, and the production cost can be reduced.
Description
Technical field
The utility model is about a kind of tundish that is used for the production of multithread continuous casting in the Ferrous Metallurgy field, relates in particular to a kind of charged magnetic heating nozzle's tundish, the tundish that have the tundish insulation, heat, the low overheat casting is freezed, realized at the anti-mouth of a river.
Background technology
Along with social demand to the improving constantly of steel product quality, continuous casting is interrupted requisite link between tapping and the continuous casting continuous casting with tundish as steel-making, more and more causes people's great attention; Carried out in succession tundish flow field, temperature Field Research; Discovery is along with the continuous expansion of continuous casting billet section, the continuous increase of continuous casting fluxion, and the tundish specification increases; The uniformity difference of temperature is big more in the tundish, and difference and control difficulty between each stream are also big more; Freeze for fear of the low-temperature space mouth of a river; Conventional art adopts the method that improves the whole degree of superheat of tundish more; The result makes that whole continuous casting production is under higher degree of superheat condition, to move to a great extent, and not only energy consumption is high, production cost can fall, and the nucleation ability of crystallizer electromagnetic agitation reduces; Cause foundry goods center porosity, shrinkage cavity to increase, restricted the raising of product quality; For this reason, the heating of tundish, the research of heat preservation technology have been risen to high height both at home and abroad.
The heating technique of existing tundish comprises: traditional tundish molten steel face coal gas heating, tundish arc heated method, tundish molten steel face plasma heating and tundish electromagnetic induction heating method or the like.
Wherein, traditional coal gas heating means thermal efficiency low (being about 30～40%), firing rate is slow, effect is relatively poor; Its arrangement of electrodes of arc heated method is complicated, and consumption of electrode and molten steel had carburetion; The plasma heating means compare with the former that firing rate is fast, efficient is high (60～70%), pollution-free; It is one of the widest method of using at present; But belong to surperficial heating means with aforementioned two kinds of heating means, though to preventing that molten steel from freezing to have played positive role at tundish; The solution effect of problems such as the new tundish cooling to using is fast, mouth of a river easy freezing is little, only if adopt the higher degree of superheat; Another method of the prior art; Be between the molten bath above the stream of the molten bath below the steel ladle mouth of a river of tundish and the mouth of a river, to be communicated with an interconnection; On this passage, adopt will the flow through molten metal heating of passage of electromagnetic-induction heating method, this method efficiency of heating surface high (90～98%), but installation and maintenance are inconvenient; This method is that bulk metal liquid in the tundish is heated, and is not obvious to mouth of a river stream temperature controlling equally.
In existing tundish insulation heating technique, the deficiency that exists in the temperature control is being flowed in each casting, the inventor relies on relevant design and manufacturing experience for many years, proposes a kind of charged magnetic heating nozzle's tundish, to overcome the defective of prior art.
The utility model content
The purpose of the utility model is to provide a kind of charged magnetic heating nozzle's tundish, with overcome traditional tundish efficiency of heating surface low, to poor, the unfavorable whole deficiency such as superheat of liquid steel that reduces of each casting stream temperature independence control ability; Solve newly to unwrap and water initial stage mouth of a river easy freezing and in the past for avoiding the too high problems such as the degree of superheat of freeze control.
Another purpose of the utility model is to provide a kind of charged magnetic heating nozzle's tundish, can independently control each mouth of a river stream temperature, improves the efficiency of heating surface, realizes continuous casting production " constant temperature casting, low overheat production ", stabilizes and increases product quality.
The another purpose of the utility model is to provide a kind of charged magnetic heating nozzle's tundish, its have simple in structure, handling good, characteristics easy to maintenance.
The purpose of the utility model is achieved in that a kind of charged magnetic heating nozzle's tundish, and said tundish is made up of inclusion, clad and electromagnetism heating nozzle; Said inclusion bottom is provided with open-work; The electromagnetism heating nozzle is located at the below at open-work position, inclusion bottom; This electromagnetism heating nozzle is made up of the stopper rod formula mouth of a river and the electromagnetic heater that is located on the outside, the stopper rod formula mouth of a river; Surrounded an annular housing between the stopper at the inwall of said electromagnetic heater and the stopper rod formula mouth of a river to constitute the annular molten bath of electromagnetic induction heating; This annular molten bath is positioned at the junction of the stopper steamed bun brick and the stopper concave brick at the stopper rod formula mouth of a river; Thus; Through the control electromagnetic heater molten steel in the annular molten bath is heated, prevent that freeze at the mouth of a river under the low overheat situation, and then the molten steel temperature of control mouth of a river stream.
In a preferred embodiments of the utility model, said electromagnetic heater is made up of water-cooled induction coil, inductor inner bag and inductor housing; The inductor inner bag is the tubular structure with the concentric setting in the stopper rod formula mouth of a river; Its diameter of bore is greater than the stopper external diameter; Between inductor inner bag and stopper concave brick, be provided with annular end brick; Said annular end brick end face flushes the bottom that has constituted annular molten bath with stopper concave brick end face, and inductor inner bag height constitutes said annular molten bath greater than the height of annular end brick by stopper steamed bun brick, stopper concave brick, annular end brick and inductor inner bag; The water-cooled induction coil fixed disk is located at the lateral surface middle part of inductor inner bag.
In a preferred embodiments of the utility model, the water-cooled induction coil outer ring is provided with a plurality of magnetic conductors, is provided with the insulation thermal insulation board between the said magnetic conductor outside and the inductor inner walls; Bottom and top at magnetic conductor are provided with insulating pad.
In a preferred embodiments of the utility model, be provided with the adjustment gasket ring between the bottom upper side of said annular end brick and inductor housing; Be provided with the gap between said annular end brick lateral surface and the inductor inner bag, said gap is filled by fire resistant infilling.
In a preferred embodiments of the utility model, said inductor housing is made up of the end cap that an annular outer cover and bottom thereof are fixedly connected, and end cap is provided with perforation, and the said stopper rod formula mouth of a river is arranged in this perforation; The sidewall of said annular outer cover is provided with the cable outlet of water-cooled induction coil; In the bottom of inductor housing and the insulating pad downside that is positioned at the magnetic conductor bottom be provided with a plurality of adjustment bolts.
In a preferred embodiments of the utility model, said inclusion ecto-entad comprises steel construction shell, heat insulation layer, semipermanent layer and working lining cylinder-packing structure successively; Be provided with fire-resistant annulus sealing brick and mouth of a river adpting flange around the open-work downside of inclusion bottom.
In a preferred embodiments of the utility model, said inclusion heat insulation layer by adiabatic refractory fiber cotton as additive, make binding agent, do by the refractory matter particle that aggregate is prefabricated to form by refractory cement; Semipermanent layer is formed by stamp mass knotting perfusion; Working lining is built by laying bricks or stones by moulding refractory brick and is formed; Fire-resistant annulus sealing brick adopts prefabricated the forming of carbon brick class; Said mouth of a river adpting flange is welded on the bag end steel construction shell.
In a preferred embodiments of the utility model, said clad includes steel structure frame, apart from bottom thickness 1/3rd positions one deck heat-resisting steel sheet and plate is set at steel structure frame, and heat-resisting steel sheet and plate is provided with a plurality of air-vents; Be welded with a plurality of steel pawls on the upper and lower surface of heat-resisting steel sheet and plate; Be provided with the insulation stamp mass in the upper and lower both sides of heat-resisting steel sheet and plate; The fireproof heat-insulating cotton is arranged on the clad bottom and by the steel pawl itself and steel construction is fixed.
The purpose of the utility model can also realize like this; A kind of electromagnetism heating nozzle; This electromagnetism heating nozzle is made up of the stopper rod formula mouth of a river and the electromagnetic heater that is located on the outside, the stopper rod formula mouth of a river, has surrounded an annular housing between the stopper at the inwall of said electromagnetic heater and the stopper rod formula mouth of a river to constitute the annular molten bath of electromagnetic induction heating, and this annular molten bath is positioned at the junction of the stopper steamed bun brick and the stopper concave brick at the stopper rod formula mouth of a river; Thus; Through the control electromagnetic heater molten steel in the annular molten bath is heated, prevent that the mouth of a river from freezing, and then the molten steel temperature of control mouth of a river stream.
In a preferred embodiments of the utility model, said electromagnetic heater is made up of water-cooled induction coil, inductor inner bag and inductor housing; The inductor inner bag is the tubular structure with the concentric setting in the stopper rod formula mouth of a river; Its diameter of bore is greater than the stopper external diameter; Between inductor inner bag and stopper concave brick, be provided with annular end brick; Said annular end brick end face flushes the bottom that has constituted annular molten bath with stopper concave brick end face, and inductor inner bag height constitutes said annular molten bath greater than the height of annular end brick by stopper steamed bun brick, stopper concave brick, annular end brick and inductor inner bag; The water-cooled induction coil fixed disk is located at the lateral surface middle part of inductor inner bag.
In a preferred embodiments of the utility model, the water-cooled induction coil outer ring is provided with a plurality of magnetic conductors, is provided with the insulation thermal insulation board between the said magnetic conductor outside and the inductor inner walls; Bottom and top at magnetic conductor are provided with insulating pad.
In a preferred embodiments of the utility model, be provided with the adjustment gasket ring between the bottom upper side of said annular end brick and inductor housing; Be provided with the gap between said annular end brick lateral surface and the inductor inner bag, said gap is filled by fire resistant infilling.
In a preferred embodiments of the utility model, said inductor housing is made up of the end cap that an annular outer cover and bottom thereof are fixedly connected, and end cap is provided with perforation, and the said stopper rod formula mouth of a river is arranged in this perforation; The sidewall of said annular outer cover is provided with the cable outlet of water-cooled induction coil; In the bottom of inductor housing and the insulating pad downside that is positioned at the magnetic conductor bottom be provided with a plurality of adjustment bolts.
From the above mentioned, the charged magnetic heating nozzle's of the utility model tundish is in the inclusion bottom the special water-cooled eddy-current heating mouth of a river to be installed, and utilizes inductive heating principle to form and can independently control the tundish that temperature is flowed at the mouth of a river; The utility model can be installed one or more electromagnetism heating nozzles in the inclusion bottom as required, and the tundish of each mouth of a river stream temperature can be independently controlled in formation; The tundish efficiency of heating surface of the utility model is high, can carry out independently sending electric control to each cast stream respectively, and liquid steel temperature is respectively flowed in adjustment; Effectively control best cast temperature; Do not influencing under other normal mouth of a river situation, nozzle blocking is stopped at the mouth of a river that can directly heat lower temperature; The casting of realization low overheat improves slab quality; This utility model can be widely used in steel mill's continuous casting production, and particularly the multithread continuous casting billet is produced, the especially production of the big section of multithread, large section continuous casting billet; Its temperature precise control, controllability are high, operating cost is low, can significantly improve product quality, reduce production costs.
Description of drawings
Following accompanying drawing only is intended to the utility model is done schematic illustration and explanation, does not limit the scope of the utility model.Wherein:
Fig. 1: be electromagnetism heating nozzle's in the utility model structural representation.
Fig. 2: be the charged magnetic heating nozzle's of the utility model tundish structure sketch map.
Fig. 3: be the structural representation one of inclusion in the utility model.
Fig. 4: be the structural representation two of inclusion in the utility model.
Fig. 5: be the structural representation one of clad in the utility model.
Fig. 6: be the structural representation two of clad in the utility model.
Fig. 7: be the structural representation three of clad in the utility model.
Fig. 8 A: be electromagnetism heating nozzle's in the utility model installation step figure one.
Fig. 8 B: be electromagnetism heating nozzle's in the utility model installation step figure two.
Fig. 8 C: be electromagnetism heating nozzle's in the utility model installation step figure three.
Fig. 8 D: be electromagnetism heating nozzle's in the utility model installation step figure four.
Fig. 9: for the charged magnetic heating nozzle's of the utility model tundish send electrical heating initial stage sketch map.
The specific embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment of description of drawings the utility model at present.
As shown in Figure 1; The utility model proposes a kind of electromagnetism heating nozzle 3; This electromagnetism heating nozzle 3 is made up of the stopper rod formula mouth of a river 31 and the electromagnetic heater 32 that is located on 31 outsides, the stopper rod formula mouth of a river; Surrounded an annular housing 33 between the stopper 311 at the inwall of said electromagnetic heater 32 and the stopper rod formula mouth of a river 31 to constitute the annular molten bath of electromagnetic induction heating, this annular molten bath 33 is positioned at the junction of stopper steamed bun brick 312 with the stopper concave brick 313 at the stopper rod formula mouth of a river 31.
As shown in Figure 2, the utility model also proposes a kind of tundish 100 that has above-mentioned electromagnetism heating nozzle 3, and said tundish 100 is made up of inclusion 1, clad 2 and aforementioned electromagnetic heating nozzle 3; Said inclusion 1 bottom is provided with open-work 11; Electromagnetism heating nozzle 3 is located at the below at open-work 11 positions, inclusion bottom; Thus, heat, prevent that the mouth of a river from freezing through molten steel in the annular molten baths 33 of 32 pairs of electromagnetic heaters of control, and then the molten steel temperature of control mouth of a river stream.
From the above mentioned, the charged magnetic heating nozzle's of the utility model tundish is in the inclusion bottom special water-cooled inductive electromagnetic heating nozzle to be installed, and utilizes electromagnetism heating principle to form the tundish that can independently control mouth of a river stream temperature; The utility model can be installed one or more electromagnetism heating nozzles in the inclusion bottom as required, and the tundish of each mouth of a river stream temperature can be independently controlled in formation; The tundish efficiency of heating surface of the utility model is high, can carry out independently sending electric control to each cast stream respectively, and liquid steel temperature is respectively flowed in adjustment; Effectively control best cast temperature; Do not influencing under other normal mouth of a river situation, nozzle blocking is stopped at the mouth of a river that can directly heat lower temperature; The casting of realization low overheat improves slab quality; This utility model can be widely used in steel mill's continuous casting production, and particularly the multithread continuous casting billet is produced, the especially production of the big section of multithread, large section continuous casting billet; Its temperature precise control, controllability are high, operating cost is low, can significantly improve product quality, reduce production costs.
Further, as shown in Figure 1, in this embodiment, said electromagnetic heater 32 is made up of water-cooled induction coil 321, inductor inner bag 322 and inductor housing 323; Inductor inner bag 322 is the tubular structure with the 31 concentric settings of the stopper rod formula mouth of a river; The diameter of bore of inductor inner bag 322 is greater than the external diameter of stopper 311; Between inductor inner bag 322 and stopper concave brick 313, be provided with annular end brick 324; Said annular end brick 324 end faces flush the bottom that has constituted annular molten bath 33 with stopper concave brick 313 end faces; Inductor inner bag 322 height greater than the height of annular end brick 324 with the sidewall in looping molten bath 33 (after electromagnetism heating nozzle 3 is installed on the inclusion bottom; The sidewall in annular molten bath 33 also should comprise the sidewall of inclusion open-work 11 and the member inwall between electromagnetism heating nozzle 3 and inclusion 1 bottom), constituted said annular molten bath 33 by stopper steamed bun brick 312, stopper concave brick 313, brick 324 of the annular end and inductor inner bag 322; Water-cooled induction coil 321 fixed disks are located at the lateral surface middle part of inductor inner bag 322.
As shown in Figure 1, water-cooled induction coil 321 outer rings are provided with a plurality of magnetic conductors 325, are provided with insulation thermal insulation board 326 between said magnetic conductor 325 outsides and inductor housing 323 inwalls; Bottom and top at magnetic conductor 325 are provided with insulating pad 327.
Further, in this embodiment, be provided with adjustment gasket ring 328 between the bottom upper side of said annular end brick 324 and inductor housing 323, this adjustment gasket ring 328 can be used for adjusting the position of annular end brick 324 in inductor inner bag 322; Inductor inner bag 322 is by prefabricated the forming of high-temperature refractory (like refractory materials such as high alumina matter), and the inside and outside surface of inductor inner bag 322 is the face of cylinder, and inductor inner bag 322 inner surface tops contact with annular end brick 324 intimate; Inductor inner bag 322 inner surface lower diameter are bigger than upper diameter; Inductor inner bag 322 inner surface bottoms and annular end brick 324 outer surfaces form the gap of 10～50mm; Said gap is filled by fire resistant infilling 329, by fire resistant infilling 329 inductor inner bag 322 is connected with annular end brick 324 to be sealed into one.
In this embodiment, said inductor housing 323 can be the groove shape housing that the bottom is provided with perforation 3231; As another embodiment in this embodiment; As shown in Figure 1; Electromagnetism heating nozzle 3 is in the installation of inclusion open-work 11 bottoms for ease; Inductor housing 323 also can be made up of the end cap 3233 that an annular outer cover 3232 and bottom thereof are fixedly connected, and end cap 3233 is provided with said perforation 3231, and the said stopper rod formula mouth of a river 31 is arranged in this perforation 3231; The sidewall of said annular outer cover 3232 is provided with the cable outlet 3234 of water-cooled induction coil; In the bottom of inductor housing and insulating pad 327 downsides that are positioned at magnetic conductor 325 bottoms be provided with a plurality of adjustment bolts 3235.Make magnetic conductor 325 in inductor housing 323, be able to fix through adjustment bolt 3235.In this embodiment, magnetic conductor 325, water-cooled induction coil 321 all adopt the insulation fixed form to be connected on the inductor housing 323; All insulated from each other between magnetic conductor 325, water-cooled induction coil 321, inductor housing 323 threes.
Further, like Fig. 1, shown in Figure 2, in this embodiment, the said stopper rod formula mouth of a river 31 includes the mouth of a river 315 under filling pipe end 314 and the intrusive mood, the dead in line of the axis of said filling pipe end 314 and said inclusion bottom open-work 11; The mouth of a river 315 is adopted and typically can the mode of being installed be connected under filling pipe end 314 and the intrusive mood; Said clad 2 is provided with inclusion open-work 11 corresponding stoppers and bores a hole 21; Said stopper 311 passes stopper perforation 21; As shown in Figure 1, the stopper steamed bun brick of stopper 311 bottoms 312 adopts the contact seal connected modes to be pressed on the endoporus of stopper concave brick 313 at filling pipe end 314 tops, so that filling pipe end 314 envelopes are established; Through opening the opening degree between stopper steamed bun brick 312 and stopper concave brick 313 endoporus, play the effect of control and adjustment molten steel flow.
Like Fig. 3, shown in Figure 4, in this embodiment, be provided with fire-resistant annulus sealing brick 12 and mouth of a river adpting flange 13 around open-work 11 downsides of said inclusion bottom; Inductor housing 323 connects together with the mouth of a river adpting flange 13 of inclusion through flange assembling bolt; End cap 3233 is connected as a single entity member such as the mouth of a river 315, stopper steamed bun brick 312, stopper 311 under inductor inner bag 322 and the brick of the annular end 324 that links to each other with inductor inner bag 322, stopper concave brick 313, filling pipe end 314, the immersion and tundish inclusion through bolt of cover; The bottom of magnetic conductor 325 and top are supported by insulating pad 327 respectively, and the plane flushes on the insulating pad 327 at its top and the inductor inner bag 322, and seal brick 12 with the fire-resistant annulus of inclusion and join.
Like Fig. 3, shown in Figure 4, in this embodiment, said inclusion ecto-entad comprises steel construction shell 14, heat insulation layer 15, semipermanent layer 16 and working lining cylinder-packing 17 structures successively; Be provided with slag blocking wall 18 in the inclusion, the inclusion rear portion is provided with slag-drip opening 19; Said inclusion heat insulation layer 15 as additive, made binding agent, done by the refractory matter particle that aggregate is prefabricated to form by refractory cement, has that thermal insulation is good, intensity is high by adiabatic refractory fiber cotton, good permeability, convenient building characteristics; Semipermanent layer 16 is formed by stamp mass knotting perfusion; Working lining cylinder-packing 17 is built by laying bricks or stones by moulding refractory brick and is formed, and said moulding refractory brick can be high-alumina brick, clay brick, magnesia carbon brick etc., has the liner difficult drop-off, molten steel is polluted gently, repeatedly build by laying characteristics such as convenient; Said slag blocking wall 18, slag-drip opening 19 are traditional typical slag blocking wall and slag-drip opening material and structure.
Said fire-resistant annulus sealing brick 12 adopts prefabricated the forming of carbon brick class; By the working lining 17 at open-work 11 places, inclusion bottom and fire-resistant annulus sealing brick 12, inductor inner bag 322 and annular end brick 324, the stopper concave brick 313 looping molten baths of below installation; Said mouth of a river adpting flange 13 is welded on the bag end steel construction shell 14.
Further; Like Fig. 5, Fig. 6, shown in Figure 7, in this embodiment, said clad 2 includes steel structure frame 22; Apart from bottom thickness 1/3 position one deck heat-resisting steel sheet and plate 23 is set at steel structure frame 22; These heat-resisting steel sheet and plate 23 preferred heat-resistance stainless steels, 22 of heat-resisting steel sheet and plate 23 and steel structure frames adopt welding or riveted joint, and heat-resisting steel sheet and plate 23 is provided with the air-vent 231 of a plurality of diameters at 20～80mm; Said air-vent 231 is convenient to moisture and is emerged, and when not reducing rigidity, intensity, alleviates the weight of steel construction; Be welded with a plurality of steel pawls 232 on heat-resisting steel sheet and plate 23 upper and lower surfaces; Be provided with insulation stamp mass 24 in heat-resisting steel sheet and plate 23 upper and lower both sides; Said insulation stamp mass 24 by adiabatic refractory fiber cotton as additive, to be made binding agent, done aggregate perfusion knotting by the refractory brick grain by refractory cement be one, it has the characteristics such as heat insulating ability and light specific gravity of rigidity, the insulation material of cement; Fireproof heat-insulating cotton 25 is arranged on clad bottom and itself and steel structure frame 22 is fixing by steel pawl 232.Also be provided with ladle nozzle perforation 26 on the said clad 2, ladle nozzle 4 is arranged in this perforation 26.
The tundish of the utility model in use; As shown in Figure 9; (1) tundish that at first will assemble with baked charged magnetic heating nozzle is placed into casting place (placing the conticaster top), and the ladle that fills molten metal as for the tundish top, is put in ladle nozzle 4 in the ladle nozzle perforation 26; (2) review and validate all stopper formula mouths of a river and be in closed condition; (3) open ladle nozzle 4; Make molten steel be full of the pushing off the slag pond; Realize that through slag blocking wall 18 slag, liquid separate; Slag is discharged through slag-drip opening 19, and pure molten metal is flowed in the tundish that is furnished with four (1～4 stream) electromagnetism heating nozzles 3 by the open-work on the slag blocking wall 18 181, gets into the annular molten bath 33 of respectively watering between steel stream top electromagnetic heater and stopper; (4) send for simultaneously four electromagnetism heating nozzles 3; Avoid the molten metal in the annular molten bath 33 particularly to be freezed near the molten metal at stopper steamed bun brick place; Get into the molten metal in annular molten bath 33 between electromagnetic heater and stopper; Raise through the electromagnetic heater temperature after heating, the impurity that together has been heated simultaneously obtains getting rid of at floating-upward process with heated molten metal, when avoiding stopper to freeze, has played the effect of scum silica frost deslagging; Dummy ingot is accomplished at each stopper mouth of a river of (5) opening four streams respectively; (6) flow actual cast temperature according to each, adjustment electromagnetism heating nozzle 3 send electrical power (reduce 2 streams gradually, 3 streams send electrical power, adjust and strengthen simultaneously 1 stream as required, 4 streams send electrical power), guarantee 1～4 stream relative one stable cast temperature of making peace.Because electromagnetism heating nozzle's use, stopped possibility that the low temperature molten steel freezes stopper, for low overheat down casting created condition, performance crystallizer electromagnetic agitation effect, raising continuous casting billet quality have been created advantage; The use of the independent electromagnetic heater of each casting stream; Can realize independently sending electrical heating to both sides low temperature casting stream; Higher casting is flowed and can not bothered to see me out electricity or send electricity less to the middle part temperature, and the water-cooled inductor coil also can play the effect of auxiliary temperature-reducing to the casting stream of the electricity of not bothering to see me out simultaneously.
From the above mentioned, the charged magnetic heating nozzle's of the utility model tundish has advantage at least:
1. because inclusion has adopted special heat insulation layer, the semipermanent layer of knotting perfusion and can repeatedly build by laying working lining three-decker mode easily, make that inclusion is adiabatic, heat-insulating property improve greatly, build by laying safeguard convenient;
2. because the inclusion working lining can select for use the standard moulding refractory brick of suitable material to build by laying bricks or stones according to the needs of steel grade, therefore, liner is lower to the pollution that molten steel causes, and difficult drop-off;
3. because the use of prefabricated fire-resistant annulus sealing brick and mouth of a river adpting flange is located at the inclusion mouth of a river, make inclusion build by laying bricks or stones with being tightly connected of electromagnetism heating nozzle, change, safeguard and become convenient;
4. because clad adopts steel structure frame and the adiabatic stamp mass of light-weight refractory to be composited; 1/3 position is provided with one deck heat-resisting steel sheet and plate apart from the bottom surface at steel structure frame, makes that its structure is light, rigidity, structural strength is higher, adiabatic heat insulating effect is better, security is higher;
5. owing to used the electromagnetism heating nozzle, thoroughly stopped possibility that the low temperature molten steel freezes stopper, can realize the casting under the low overheat state, for the raising continuous casting billet quality has been created advantage;
6. because the annular molten bath that the electromagnetism heating nozzle has used the fire-resistant annulus sealing in bag end brick, inductor inner bag, stopper annular end brick, stopper concave brick, stopper steamed bun brick, stopper to surround dexterously; Constituted the cavity that is heated of electromagnetism heating; This annular molten bath is positioned at easy freezing position, the mouth of a river; Both are organically combined be one, make to be heated the position and to act on easy freezing mouth of a river place just, even make the mouth of a river also can smooth opening under very low temperature;
7. because the electromagnetism heating nozzle is positioned at bag end lowest part, open the molten pool metal liquid temp that the initial stage of watering has been heated and raise, the mobile enhancing also played the scum silica frost impurity elimination simultaneously, purified the effect of molten metal;
8. because inductor inner bag, stopper annular end brick waters the mounting means of building by laying that refractory matter combines in adopting prefabricated component and reserving filling slot, problems such as parts overall permanence, replaceable maintainability and sealing have been solved;
9. owing to adjusting gasket ring, annular insulating mat plate, adjusting being used of bolt, fixing seal is combined together;
10. because the electromagnetic heater of each casting stream can independently use, realized sending the electrical heating operation separately to low temperature casting stream; The water-cooled inductor coil also has the effect to casting stream auxiliary temperature-reducing to the casting stream of higher temperature in the electricity of not bothering to see me out.
Make description in the face of this electromagnetism heating nozzle's assembling process down, shown in Fig. 8 A～8D, (1) at first is placed into the assembly yard with the tundish inclusion 1 that lays behind the natural air drying; (2) then with water-cooled induction coil 321, magnetic conductor 325, insulating pad 327 is assembled into together up and down; (3) adding and fixed insulation thermal insulation board 326 with inductor housing 323 contacted positions; (4) with the induction coil that assembles 321, magnetic conductor 325, insulating pad 327 is installed in the inductor housing of making 323 together with insulation thermal insulation board 326 up and down; (5) the preliminary adjustment bolt 3235 of installing; (6) inductor housing 323 is installed on the mouth of a river adpting flange 13 of tundish inclusion 1 below tight; (7) adjustment adjustment bolt 3235 compresses 12 compactings of the fire-resistant annulus sealing of insulating pad 327 and ladle brick; (8) assembling stopper concave brick 313 and filling pipe end 314 is to brick of the annular end 324 interior (between bond to together with refractory wass); The brick of the annular end 324 that (9) will assemble is packed in the inductor inner bag 322, with behind stopper adjustment gasket ring 328 preliminary fixing both relative positions in filling stopper fire resistant infilling 329 between inductor inner bag 322 and the annular end brick 324; (10) the installation end surface cover 3233, tight bolt of cover, 12 compactings of the fire-resistant annulus sealing of inductor inner bag 322 and ladle brick compressed; (11) mouth of a river 315, stopper 311 under the immersion are installed; (12) add a cover clad 2, the baking before can producing has been heated.
Electromagnetism heating nozzle's replacing with safeguard that step is following:
(1) tundish that at first will be to be safeguarded is placed into the maintenance maintenance place; (2) no remaining high temperature slag and molten metal in the inspection tundish; (3) unload assembling bolt, adpting flange takes off from the inclusion bottom in the lump with electromagnetism heating nozzle and internal part thereof, can change operation to electromagnetism heating nozzle and internal part thereof; (4) unload bolt of cover on the cover plate of lower surface, can inductor inner bag and inner bag inner part be separated with electromagnetic heater and change or maintenance, can also change maintenance induction coil and magnetic conductor; (5) the stopper annular end brick, stopper concave brick, stopper fire resistant infilling, the stopper that separate in the inductor inner bag are adjusted members such as gasket ring, filling pipe end, carry out repair and replacement as required; (6) after the replacing, assemble recovery by tundish electromagnetism heating nozzle's installation step and get final product.
In addition, also can not unload assembling bolt, directly unload the bolt of cover on the cover plate of lower surface, on-line replacing with safeguard each parts (repeating no more).
In sum, the charged magnetic heating nozzle's of the utility model tundish can make the control of continuous casting beam temperature become easier; Thoroughly stopped mouth of a river freezing accident; Make the low overheat casting more be prone to realize; The control continuous casting quality is improved become easier.
The above is merely the schematic specific embodiment of the utility model, is not in order to limit the scope of the utility model.Any those skilled in the art, equivalent variations of under the prerequisite of design that does not break away from the utility model and principle, having done and modification all should belong to the scope that the utility model is protected.
Claims (13)
1. a charged magnetic heating nozzle tundish, this tundish is made up of inclusion, clad and electromagnetism heating nozzle; It is characterized in that: said inclusion bottom is provided with open-work; The electromagnetism heating nozzle is located at the below at open-work position, inclusion bottom; This electromagnetism heating nozzle is made up of the stopper rod formula mouth of a river and the electromagnetic heater that is located on the outside, the stopper rod formula mouth of a river; Surrounded an annular housing between the stopper at the inwall of said electromagnetic heater and the stopper rod formula mouth of a river to constitute the annular molten bath of electromagnetic induction heating; This annular molten bath is positioned at the junction of the stopper steamed bun brick and the stopper concave brick at the stopper rod formula mouth of a river; Through controlling the heating that electromagnetic heater carries out molten steel in the annular molten bath; Prevent that the mouth of a river from freezing, and then the molten steel temperature of control mouth of a river stream.
2. charged magnetic heating nozzle's as claimed in claim 1 tundish is characterized in that: said electromagnetic heater is made up of water-cooled induction coil, inductor inner bag and inductor housing; The inductor inner bag is the tubular structure with the concentric setting in the stopper rod formula mouth of a river; Its diameter of bore is greater than the stopper external diameter; Between inductor inner bag and stopper concave brick, be provided with annular end brick; Said annular end brick end face flushes the bottom that has constituted annular molten bath with stopper concave brick end face, and inductor inner bag height constitutes said annular molten bath greater than the height of annular end brick by stopper steamed bun brick, stopper concave brick, annular end brick and inductor inner bag; The water-cooled induction coil fixed disk is located at the lateral surface middle part of inductor inner bag.
3. charged magnetic heating nozzle's as claimed in claim 2 tundish is characterized in that: the water-cooled induction coil outer ring is provided with a plurality of magnetic conductors, is provided with the insulation thermal insulation board between the said magnetic conductor outside and the inductor inner walls; Bottom and top at magnetic conductor are provided with insulating pad.
4. charged magnetic heating nozzle's as claimed in claim 2 tundish is characterized in that: be provided with the adjustment gasket ring between the bottom upper side of said annular end brick and inductor housing; Be provided with the gap between said annular end brick lateral surface and the inductor inner bag, said gap is filled by fire resistant infilling.
5. charged magnetic heating nozzle's as claimed in claim 3 tundish is characterized in that: said inductor housing is made up of the end cap that an annular outer cover and bottom thereof are fixedly connected, and end cap is provided with perforation, and the said stopper rod formula mouth of a river is arranged in this perforation; The sidewall of said annular outer cover is provided with the cable outlet of water-cooled induction coil; In the bottom of inductor housing and the insulating pad downside that is positioned at the magnetic conductor bottom be provided with a plurality of adjustment bolts.
6. charged magnetic heating nozzle's as claimed in claim 1 tundish is characterized in that: said inclusion ecto-entad comprises steel construction shell, heat insulation layer, semipermanent layer and working lining cylinder-packing structure successively; Be provided with fire-resistant annulus sealing brick and mouth of a river adpting flange around the open-work downside of inclusion bottom.
7. charged magnetic heating nozzle's as claimed in claim 6 tundish is characterized in that: said inclusion heat insulation layer by adiabatic refractory fiber cotton as additive, make binding agent, do by the refractory matter particle that aggregate is prefabricated to form by refractory cement; Semipermanent layer is formed by stamp mass knotting perfusion; Working lining is built by laying bricks or stones by moulding refractory brick and is formed; Fire-resistant annulus sealing brick adopts prefabricated the forming of carbon brick class; Said mouth of a river adpting flange is welded on the bag end steel construction shell.
8. charged magnetic heating nozzle's as claimed in claim 1 tundish is characterized in that: said clad includes steel structure frame, apart from bottom thickness 1/3rd positions one deck heat-resisting steel sheet and plate is set at steel structure frame, and heat-resisting steel sheet and plate is provided with a plurality of air-vents; Be welded with a plurality of steel pawls on the upper and lower surface of heat-resisting steel sheet and plate; Be provided with the insulation stamp mass in the upper and lower both sides of heat-resisting steel sheet and plate; The fireproof heat-insulating cotton is arranged on the clad bottom and by the steel pawl itself and steel construction is fixed.
9. electromagnetism heating nozzle; It is characterized in that: this electromagnetism heating nozzle is made up of the stopper rod formula mouth of a river and the electromagnetic heater that is located on the outside, the stopper rod formula mouth of a river; Surrounded an annular housing between the stopper at the inwall of said electromagnetic heater and the stopper rod formula mouth of a river to constitute the annular molten bath of electromagnetic induction heating; This annular molten bath is positioned at the junction of the stopper steamed bun brick and the stopper concave brick at the stopper rod formula mouth of a river, thus, through the control electromagnetic heater molten steel in the annular molten bath is heated; Prevent that the mouth of a river from freezing, and then the molten steel temperature of control mouth of a river stream.
10. electromagnetism heating nozzle as claimed in claim 9 is characterized in that: said electromagnetic heater is made up of water-cooled induction coil, inductor inner bag and inductor housing; The inductor inner bag is the tubular structure with the concentric setting in the stopper rod formula mouth of a river; Its diameter of bore is greater than the stopper external diameter; Between inductor inner bag and stopper concave brick, be provided with annular end brick; Said annular end brick end face flushes the bottom that has constituted annular molten bath with stopper concave brick end face, and inductor inner bag height constitutes said annular molten bath greater than the height of annular end brick by stopper steamed bun brick, stopper concave brick, annular end brick and inductor inner bag; The water-cooled induction coil fixed disk is located at the lateral surface middle part of inductor inner bag.
11. electromagnetism heating nozzle as claimed in claim 10 is characterized in that: the water-cooled induction coil outer ring is provided with a plurality of magnetic conductors, is provided with the insulation thermal insulation board between the said magnetic conductor outside and the inductor inner walls; Bottom and top at magnetic conductor are provided with insulating pad.
12. electromagnetism heating nozzle as claimed in claim 10 is characterized in that: be provided with the adjustment gasket ring between the bottom upper side of said annular end brick and inductor housing; Be provided with the gap between said annular end brick lateral surface and the inductor inner bag, said gap is filled by fire resistant infilling.
13. electromagnetism heating nozzle as claimed in claim 11 is characterized in that: said inductor housing is made up of the end cap that an annular outer cover and bottom thereof are fixedly connected, and end cap is provided with perforation, and the said stopper rod formula mouth of a river is arranged in this perforation; The sidewall of said annular outer cover is provided with the cable outlet of water-cooled induction coil; In the bottom of inductor housing and the insulating pad downside that is positioned at the magnetic conductor bottom be provided with a plurality of adjustment bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120207919XU CN202106027U (en) | 2011-06-20 | 2011-06-20 | Tundish with electromagnetic heating water gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120207919XU CN202106027U (en) | 2011-06-20 | 2011-06-20 | Tundish with electromagnetic heating water gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202106027U true CN202106027U (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120207919XU Expired - Lifetime CN202106027U (en) | 2011-06-20 | 2011-06-20 | Tundish with electromagnetic heating water gap |
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| CN (1) | CN202106027U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102228986A (en) * | 2011-06-20 | 2011-11-02 | 中冶京诚工程技术有限公司 | Tundish with electromagnetic heating water gap |
| CN104117662A (en) * | 2014-08-14 | 2014-10-29 | 沈阳金纳新材料股份有限公司 | Nickel and nickel alloy vacuum melting horizontal continuous casting closed type tundish |
| CN104511586A (en) * | 2014-12-05 | 2015-04-15 | 澳洲澳秀科技有限公司 | Nozzle device for continuous casting machine and continuous casting machine tundish comprising nozzle device |
| CN108705075A (en) * | 2018-05-21 | 2018-10-26 | 东北大学 | A kind of electromagnetic type inhibits the tundish of Submerged Nozzle Clogging Course |
-
2011
- 2011-06-20 CN CN201120207919XU patent/CN202106027U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102228986A (en) * | 2011-06-20 | 2011-11-02 | 中冶京诚工程技术有限公司 | Tundish with electromagnetic heating water gap |
| CN104117662A (en) * | 2014-08-14 | 2014-10-29 | 沈阳金纳新材料股份有限公司 | Nickel and nickel alloy vacuum melting horizontal continuous casting closed type tundish |
| CN104117662B (en) * | 2014-08-14 | 2015-12-30 | 沈阳金纳新材料股份有限公司 | The closed tundish of Ni-based ultrafine powder vacuum melting horizontal continuous casting |
| CN104511586A (en) * | 2014-12-05 | 2015-04-15 | 澳洲澳秀科技有限公司 | Nozzle device for continuous casting machine and continuous casting machine tundish comprising nozzle device |
| CN108705075A (en) * | 2018-05-21 | 2018-10-26 | 东北大学 | A kind of electromagnetic type inhibits the tundish of Submerged Nozzle Clogging Course |
| CN108705075B (en) * | 2018-05-21 | 2020-10-23 | 东北大学 | Electromagnetic tundish for inhibiting blockage of submerged nozzle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20120111 |