CN204438766U - A kind of directional solidification magnetic suspension induction melting water jacketed copper crucible - Google Patents
A kind of directional solidification magnetic suspension induction melting water jacketed copper crucible Download PDFInfo
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- CN204438766U CN204438766U CN201520078877.2U CN201520078877U CN204438766U CN 204438766 U CN204438766 U CN 204438766U CN 201520078877 U CN201520078877 U CN 201520078877U CN 204438766 U CN204438766 U CN 204438766U
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Abstract
The utility model relates to a kind of directional solidification magnetic suspension induction melting water jacketed copper crucible, comprise crucible body, water jacket and the magnetic induction coil around crucible body, described crucible body comprises independently sidewall assembly and diapire, sidewall assembly comprises many slits that Gong the external magnetic force line that is uniformly distributed circumferentially penetrates, diapire comprises radially equally distributed many slits penetrated for external magnetic force line, diapire vertically can slide up and down location in sidewall assembly inside, magnetic induction coil comprises the high frequency coil being centered around sidewall assembly the first half periphery and the intermediate frequency coil being centered around sidewall assembly the latter half.This crucible structure that the utility model provides, in metal smelting process, crucible diapire moves down, the deposite metal of bottom, melting chamber is solidified gradually under the stirring action of intermediate frequency magnetic induction coil, metal more on the lower more early solidifies, along with moving down gradually of crucible diapire, directional solidification and continuous casting are achieved.
Description
Technical field
The utility model relates to a kind of magnetic suspension induction melting water jacketed copper crucible realizing directional solidification, belongs to the magnetic induction melting technique field of high-purity high-temperature material.
Background technology
Levitation melting techniques occurs last century Mo, the cold crucible vacuum induction melting that is otherwise known as technology.It replaces ceramic material crucible with red copper crucible, and make the material of melting be in suspended state in fusion process by electromagnetic field, thus get rid of crucible to the pollution of melting material.Therefore, cold crucible magnetic levitation melting is the effective ways of preparation Gao Rong, high-purity, active or radioactive material.
Usual people can carry out melting at the external high frequency coil that arranges of crucible to the high-temperature alloy material in melting chamber, and when stopping coil power supply, the magnetic line of force disappears, and melted material solidifies, and forms material spindle.Such material spindle has good performance when producing most of precision part, but when production has the thin-wall part of complicated inner cavity, such as, during the thin-walled directional vane of production aero-engine, this spindle due to grain crystalline direction uncertain, there is the problem of thin-walled performance deficiency.
Prior art is in order to realize directional solidification, adopt upper and lower straight-through structure, the effect of smelting in suspension cannot be obtained, and crucible body structure is complicated, cause crucible complex manufacturing technology, maintenance cost is high, and in ingot casting, crystal structure also exists the equiax crystal in scull and initial solidification region, and crystal orientation is good not.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, provides a kind of magnetic suspension induction melting water jacketed copper crucible, can realize the directional solidification of melted material, control grain crystalline direction, improve the performance of alloy material, can continuous casting be realized, Simplified flowsheet and equipment simultaneously.
To achieve these goals, the utility model provides a kind of directional solidification magnetic suspension induction melting water jacketed copper crucible, comprise crucible body, water jacket and the magnetic induction coil around crucible body, the rounded diapire that described crucible body comprises cylindrical circular sidewall assembly and inserts bottom sidewall assembly, described sidewall assembly to be enclosed within described bottom wall outer face and jointly to consist of the melting chamber holding raw material therebetween matched in clearance, described sidewall assembly and described diapire form chilled(cooling) water return (CWR) with described water jacket respectively by means of cooling water copper pipe, sidewall assembly comprises the multiple sidewall lobes be uniformly distributed circumferentially, diapire comprises the multiple fan-shaped diapire lobe be uniformly distributed circumferentially, it is characterized in that,
Described magnetic induction coil comprises around the high frequency coil on sidewall assembly top and the intermediate frequency coil around sidewall assembly bottom, and wherein high frequency coil is used for fusing, and intermediate frequency coil is used for stirring,
Described diapire can vertically move at a slow speed, and its moveable extreme higher position is in the middle part of intermediate frequency coil, and its extreme lower position is in the below of sidewall assembly bottom.
Preferably, described columnar sidewall assembly comprises the internal diameter upwards held from middle part and increase gradually, makes the inner surface of sidewall assembly and vertically form one between surface to be not more than 5
.angle.
Preferably, the lower surface of described diapire is fixed with support bar, and described support bar drives described diapire to move up and down by means of brake apparatus.
Preferably, the translational speed of described diapire is 0-4mm/min.
Preferably, described high frequency coil is set to 4-6 circle, and described intermediate frequency coil is set to 4 circles.The frequency of described high frequency coil is 20kHz-30kHz, and the frequency of described intermediate frequency coil is 2kHz-3kHz.
Preferably, sidewall assembly comprises 12 the sidewall lobes be uniformly distributed circumferentially, the first slit that longitudinal Gong external magnetic force line penetrates is formed between adjacent wall lobe, each sidewall lobe longitudinally center line forms second slit that can penetrate for external magnetic force line, the upper end of the second slit is positioned at distance segment distance place, sidewall lobe top one, sidewall lobe bottom is ended in lower end, diapire is circumferentially evenly divided into 24 diapire lobes, the 3rd slit that Gong the external magnetic force line formed between adjacent bottom wall lobe radially penetrates, each 3rd slit aligns with the first or second slit of relevant position.
Preferably, described each sidewall lobe inside longitudinally arranges two cooling water holes, two cooling water holes are distributed in the second slit both sides and position between the inner second slit top of sidewall lobe and sidewall lobe top is interconnected, cooling water hole bottom is connected with water jacket by cooling water copper pipe, described diapire has certain thickness, inside arranges water cavity, and water cavity is directly communicated with main sewer with water inlet manifold.
Preferably, sandwiched insulating trip in described every bar slit.
Preferably, the insulation positioning board of the sheathed level in top of sidewall assembly, arranges the insulation board of level respectively under on the end face of water jacket and bottom surface, and described insulation positioning board is connected and fixed by many copper rods being evenly arranged around crucible body and water jacket and described insulation board.
Preferably, the upper surface of described diapire is by being positioned at the plane of central area and forming around the tapered slope that the low periphery in centre of central area is high.
This crucible structure that the utility model provides, in metal smelting process, crucible diapire moves down, the deposite metal of bottom, melting chamber is solidified gradually under the stirring action of intermediate frequency magnetic induction coil, metal more on the lower more early solidifies, and along with moving down gradually of crucible diapire, increasing metal solidifies from bottom to top, and when crucible diapire departs from crucible wall lower edge, the metal solidified forms ingot casting in the position of former crucible diapire.Like this, directional solidification and continuous casting are achieved.
Accompanying drawing explanation
Following is a list the relevant drawings of the utility model embodiment, wherein
Fig. 1 is the overall sectional view of the water jacketed copper crucible of the utility model embodiment;
Fig. 2 is the horizontal base view of the sidewall assembly of the utility model embodiment;
Fig. 3 is the front perspective view of the single sidewall lobe of the utility model embodiment;
Fig. 4 is the partial sectional view on single sidewall lobe top in Fig. 3;
Fig. 5 is the horizontal base view of the diapire of the utility model embodiment;
Fig. 6 is the fragmentary sectional elevation view of the diapire of the utility model embodiment.
Detailed description of the invention
Below in conjunction with accompanying drawing 1-6, preferred embodiment of the present utility model is described in detail.
First the overall structure of crucible is described.
Fig. 2 is the water jacketed copper crucible overall schematic of the utility model embodiment, the sidewall water jacket 2 comprising crucible body 1 and be positioned at below crucible body.The rounded diapire 12 (see Fig. 5-6) that described crucible body 1 comprises the sidewall assembly 11 in general cylindrical shape and inserts bottom sidewall assembly, the bottom of described sidewall assembly 11 is enclosed within the lateral surface of described diapire 12, matched in clearance therebetween.The inwall of sidewall assembly 11 is micro-outward-dipping from centre to top edge, make the inner surface of sidewall assembly 11 from bottom to top internal diameter become large gradually, form one between inner surface and vertically surface and be not more than 5
.angle.This structure is conducive to directional solidification from bottom to top.
The lower surface of crucible diapire 12 fixedly mounts a support bar 9.Support bar 9 drives crucible diapire 12 to move up and down by means of suitable brake apparatus, and the preferred turbine and worm of brake apparatus etc. can realize the mechanism of slow rectilinear motion, not shown.Preferably, the speed that crucible diapire moves up and down is 0-4mm/min, preferred 2-4mm/min.The moveable extreme higher position of diapire is in the middle part of intermediate frequency coil, and its extreme lower position is in the below of sidewall assembly bottom.
The insulation positioning board 3 of the sheathed level in top of sidewall assembly 11, for supporting and lock ring sidewall assembly protect the magnetic induction coil (not shown) of winding around sidewall assembly below it.The insulation board 5 and 6 of level is set under on the end face of water jacket 2 and bottom surface respectively, for reducing the absorption of water jacket to outside magnetic field energy.The circumferential area that the external diameter of the circumferential area that insulation positioning board 3 and the external diameter of the area ratio sidewall assembly of insulation board 5 and 6 are formed and water jacket is formed is bigger.Insulation positioning board 3 is connected and fixed with insulation board 5 and 6 by four copper rods 4 be evenly arranged around crucible body and water jacket.Insulation board and insulation positioning board can use electrician's bakelite to make.Be understandable that, copper rod also can be 3 or more than 4.
The magnetic induction coil of following description crucible outer setting.
The upper and lower two groups of magnetic induction coils 7 and 8 of crucible outer setting, are respectively high-frequency magnetic induction coil 7 and intermediate frequency magnetic induction coil 8.High-frequency magnetic induction coil 7 and intermediate frequency magnetic induction coil 8 arrange the different numbers of turn according to the height of crucible body.Such as 10 circles are set altogether, wherein high frequency coil 6 circle, intermediate frequency coil 4 circle, or as shown in Figure 1, respective 4 circles, amount to 8 circles.The frequency of described high frequency coil is 20kHz-30kHz, and the frequency of described intermediate frequency coil is 2kHz-3kHz.High frequency coil mainly plays high temperature melting effect in magnetic induction fusion process, and intermediate frequency coil plays stirring action in magnetic induction fusion process, and magnetic induction coil plays suspension effect to melted material simultaneously.Intermediate frequency coil is arranged near crucible diapire, preferably, the height of intermediate frequency coil the 3rd circle from top to bottom corresponds to the upper limb of crucible diapire extreme higher position, thus, when crucible diapire moves to extreme higher position, still have at least two circle intermediate frequency coils can corresponding melting chamber inner and melting material is stirred.
The splitted structure of following description crucible.
Sidewall assembly 11 is circumferentially evenly divided into 12 sidewall lobes 111 (as more high-visible in Fig. 2-3), forms 12 the first slit S1 that longitudinal Gong external magnetic force line penetrates between adjacent wall lobe.Slit is formed by Linear cut.Sandwiched insulating trip in every bar first slit, is preferably mica sheet or boron carbide.
Each sidewall lobe 111 longitudinally center line forms the second slit S2 (as Fig. 3 is more high-visible), the upper end of the second slit S2 starts from from segment distance place, sidewall lobe 111 top one, apart from preferred 30mm, the bottom of sidewall lobe 111 is ended in lower end, and can penetrate for external magnetic force line.The length of described second slit is roughly 7/8 of sidewall lobe overall length.Slit is formed by Linear cut.Sandwiched insulating trip in every bar second slit, is preferably mica sheet or boron carbide.
The circular configuration that crucible diapire is integrated on the whole, has certain thickness, and the upper surface of described diapire 12 is by being positioned at the plane of central area and forming around the tapered slope that the low periphery in centre of central area is high.The diapire lobe 121 that diapire is circumferentially evenly divided into 24 central areas to be connected, 24 article of the 3rd slit S3 that Gong the external magnetic force line formed between adjacent bottom wall lobe radially penetrates.Slit is formed by Linear cut, radially cuts from the outward flange of diapire, and the 3rd slit S3 has certain degree of depth but the thickness of not through diapire.Sandwiched insulating trip in every article of the 3rd slit S3, is preferably mica sheet or boron carbide.When diapire inserts sidewall assembly from bottom, the sidewall of each 3rd slit and relevant position the one the second slit aligns, and limits the circumferential relative position of diapire and sidewall assembly with this.
By means of such splitted structure, crucible body sidewall diapire respectively has 24 slits, the slit of dense distribution is conducive to the magnetic field intensity improving crucible inside, particularly at diapire, also slit is set, effectively can increase the magnetic field intensity in crucible inner bottom part region, reduce the contact of melt and crucible bottom, reduce bottom and remain.
Cooling system in following description the present embodiment.
As Figure 1-4, sidewall assembly 11 inside comprises cooling water hole A.Many cooling water copper pipes 13 are vertically set between crucible body 1 and water jacket 2, the upper end of cooling water copper pipe 13 is fixed on sidewall assembly 11 by modes such as welding and is communicated with cooling water hole A, and lower end is through inserting after insulation board 5 and being fixed in water jacket 2 by securing members such as bolts.Thus, cooling water copper pipe 13 for the cooling water in water jacket 2 is passed in cooling water hole A, and for sidewall assembly 11 is positioned at above water jacket 2.Cooling water copper pipe 13 can be divided into water inlet copper pipe and water outlet copper pipe by water (flow) direction.
Water jacket 2 is roughly in hollow cylindrical, and external diameter is slightly larger than the external diameter of crucible body 1.Water jacket 2 is divided into the space of upper and lower two-layer accommodation cooling water, and upper strata is upper water inlet water jacket 21, and lower floor is lower water outlet water jacket 22.Upper water inlet water jacket 21 is connected with water inlet manifold, and lower water outlet water jacket 22 is connected with main sewer.Water inlet copper pipe is communicated with upper water inlet water jacket 21, and water outlet copper pipe is communicated with lower water outlet water jacket 22.Upper water inlet water jacket 21 top arranges cover plate 20.Cover plate 20 adopts insulating materials to make, thus can reduce the absorption of water jacket to outside magnetic field energy.
Each sidewall lobe inside longitudinally arranges cooling water inlet opening A1 and cooling water apopore A2 (as Fig. 4 is more high-visible), and they lay respectively at the both sides of the second slit S2 and the position in sidewall lobe between the inner second slit top of sidewall lobe and sidewall lobe top is interconnected.For the consideration of manufacture craft, cooling water inlet opening A1 and cooling water apopore A2 are communicated with by means of the blind hole A0 of the same apertures of horizontal direction is identical, blind hole A0 sidewall lobe a wherein side opening and after blind hole is formed, clog this opening (as shown in Figure 6) with phosphor-copper.Preferably, the center line of blind hole A0 is apart from sidewall lobe top 20mm.
Described cooling water inlet opening A1 and cooling water apopore A2 is at sidewall lobe bottom end opening, its opening is connected with water inlet copper pipe and water outlet copper pipe respectively, thus make cooling water can enter cooling water inlet opening A1 from upper water inlet water jacket 21 through water inlet copper pipe, then flow through cooling water apopore A2, enter lower water outlet water jacket 22 finally by water outlet copper pipe.The aperture of each cooling water inlet opening A1 and cooling water apopore A2 reaches 12mm, and crucible wall thickness is only 22mm.Based on this set, in each sidewall lobe, realize smooth cooling water circulation, make sidewall in fusion process, obtain cooling fully.
Diapire bottom arranges water cavity C, and water cavity lower surface is communicated with water inlet manifold and main sewer, thus makes cooling water enter water cavity C from water inlet manifold, flows out afterwards from main sewer, realizes smooth cooling water circulation, makes diapire in fusion process, obtain cooling fully.
Based on this crucible structure, in metal smelting process, crucible diapire moves down, the deposite metal of bottom, melting chamber is solidified gradually under the stirring action of intermediate frequency magnetic induction coil, metal more on the lower more early solidifies, and along with moving down gradually of crucible diapire, increasing metal solidifies from bottom to top, and when crucible diapire departs from crucible wall lower edge, the metal solidified forms ingot casting in the position of former crucible diapire.Like this, directional solidification and continuous casting are achieved.
Last it is noted that above-described each embodiment is only for illustration of the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or to wherein partly or entirely technical characteristic carry out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a directional solidification magnetic suspension induction melting water jacketed copper crucible, comprise crucible body, water jacket and the magnetic induction coil around crucible body, the rounded diapire that described crucible body comprises cylindrical circular sidewall assembly and inserts bottom sidewall assembly, described sidewall assembly to be enclosed within described bottom wall outer face and jointly to consist of the melting chamber holding raw material therebetween matched in clearance, described sidewall assembly and described diapire form chilled(cooling) water return (CWR) with described water jacket respectively by means of cooling water copper pipe, sidewall assembly comprises the multiple sidewall lobes be uniformly distributed circumferentially, diapire comprises the multiple fan-shaped diapire lobe be uniformly distributed circumferentially, it is characterized in that,
Described magnetic induction coil comprises around the high frequency coil on sidewall assembly top and the intermediate frequency coil around sidewall assembly bottom, and wherein high frequency coil is used for fusing, and intermediate frequency coil is used for stirring,
Described diapire can vertically move at a slow speed, and its moveable extreme higher position is in the middle part of intermediate frequency coil, and its extreme lower position is in the below of sidewall assembly bottom.
2. directional solidification magnetic suspension induction melting water jacketed copper crucible according to claim 1, it is characterized in that, described columnar sidewall assembly comprises the internal diameter upwards held from middle part and increase gradually, makes the inner surface of sidewall assembly and vertically forms the angle that is not more than 5 ° between surface.
3. directional solidification magnetic suspension induction melting water jacketed copper crucible according to claim 1, it is characterized in that, the lower surface of described diapire is fixed with support bar, and described support bar drives described diapire to move up and down by means of brake apparatus.
4. directional solidification magnetic suspension induction melting water jacketed copper crucible according to claim 1, is characterized in that, the translational speed of described diapire is 0-4mm/min.
5. directional solidification magnetic suspension induction melting water jacketed copper crucible according to claim 1, it is characterized in that, described high frequency coil is set to 4-6 circle, and described intermediate frequency coil is set to 4 circles, the frequency of described high frequency coil is 20kHz-30kHz, and the frequency of described intermediate frequency coil is 2kHz-3kHz.
6. the directional solidification magnetic suspension induction melting water jacketed copper crucible according to any one of claim 1-5, is characterized in that,
Sidewall assembly comprises 12 the sidewall lobes be uniformly distributed circumferentially, the first slit that longitudinal Gong external magnetic force line penetrates is formed between adjacent wall lobe, each sidewall lobe longitudinally center line forms second slit that can penetrate for external magnetic force line, the upper end of the second slit is positioned at distance segment distance place, sidewall lobe top one, sidewall lobe bottom is ended in lower end
Diapire is circumferentially evenly divided into 24 diapire lobes, the 3rd slit that Gong the external magnetic force line formed between adjacent bottom wall lobe radially penetrates, and each 3rd slit aligns with the first or second slit of relevant position.
7. directional solidification magnetic suspension induction melting water jacketed copper crucible according to claim 6, is characterized in that,
Described each sidewall lobe inside longitudinally arranges two cooling water holes, two cooling water holes are distributed in the second slit both sides and position between the inner second slit top of sidewall lobe and sidewall lobe top is interconnected, cooling water hole bottom is connected with water jacket by cooling water copper pipe
Described diapire has certain thickness, and inside arranges water cavity, and water cavity is directly communicated with main sewer with water inlet manifold.
8. directional solidification magnetic suspension induction melting water jacketed copper crucible according to claim 7, is characterized in that, sandwiched insulating trip in described every bar slit.
9. the directional solidification magnetic suspension induction melting water jacketed copper crucible according to any one of claim 1-5, it is characterized in that, the insulation positioning board of the sheathed level in top of sidewall assembly, arrange the insulation board of level under on the end face of water jacket and bottom surface respectively, described insulation positioning board is connected and fixed by many copper rods being evenly arranged around crucible body and water jacket and described insulation board.
10. directional solidification magnetic suspension induction melting water jacketed copper crucible according to claim 1, is characterized in that, the upper surface of described diapire is by being positioned at the plane of central area and forming around the tapered slope that the low periphery in centre of central area is high.
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| CN105222586A (en) * | 2015-10-21 | 2016-01-06 | 上海大学 | A kind of annular water jacketed copper crucible |
| CN105319318A (en) * | 2015-10-18 | 2016-02-10 | 常州大学 | High-temperature crucible parallel mode static cooling simple equipment |
| CN106890985A (en) * | 2017-04-25 | 2017-06-27 | 北京航空航天大学 | It is a kind of for manufacturing casting device and method without shrinkage cavity casting |
| CN107267769A (en) * | 2017-08-14 | 2017-10-20 | 核工业理化工程研究院 | Thimble tube cold-crucible and vacuum electron beam smelting apparatus |
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| CN107677126A (en) * | 2017-10-31 | 2018-02-09 | 百色学院 | A kind of electromagnetic suspension water jacketed copper crucible |
| CN109612275A (en) * | 2019-01-28 | 2019-04-12 | 徐州金虹钢铁集团有限公司 | A kind of technique of suspension smelting furnace and its smelting metal |
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| CN105319318A (en) * | 2015-10-18 | 2016-02-10 | 常州大学 | High-temperature crucible parallel mode static cooling simple equipment |
| CN105222586A (en) * | 2015-10-21 | 2016-01-06 | 上海大学 | A kind of annular water jacketed copper crucible |
| CN106890985A (en) * | 2017-04-25 | 2017-06-27 | 北京航空航天大学 | It is a kind of for manufacturing casting device and method without shrinkage cavity casting |
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| CN107267769A (en) * | 2017-08-14 | 2017-10-20 | 核工业理化工程研究院 | Thimble tube cold-crucible and vacuum electron beam smelting apparatus |
| CN107267771A (en) * | 2017-08-14 | 2017-10-20 | 核工业理化工程研究院 | Monoblock type vacuum electron beam smelting apparatus |
| CN111372705A (en) * | 2017-10-25 | 2020-07-03 | 罗图公司 | Moulding method and device for metal glass in particular |
| CN107677126A (en) * | 2017-10-31 | 2018-02-09 | 百色学院 | A kind of electromagnetic suspension water jacketed copper crucible |
| CN107677126B (en) * | 2017-10-31 | 2023-09-19 | 百色学院 | Electromagnetic suspension water-cooled copper crucible |
| CN109654877A (en) * | 2019-01-28 | 2019-04-19 | 徐州金虹钢铁集团有限公司 | A kind of method of the smelting in suspension mechanism and its smelting metal of metal smelting-furnace |
| CN109612275A (en) * | 2019-01-28 | 2019-04-12 | 徐州金虹钢铁集团有限公司 | A kind of technique of suspension smelting furnace and its smelting metal |
| CN112708858A (en) * | 2020-12-17 | 2021-04-27 | 王殿儒 | Magnetic control liquid cathode arc plasma evaporation ionization source, coating device and method |
| CN112708858B (en) * | 2020-12-17 | 2023-03-10 | 王殿儒 | Magnetron liquid cathode arc plasma evaporation ionization source, coating device and method |
| CN116007373A (en) * | 2022-12-15 | 2023-04-25 | 中国核动力研究设计院 | Nuclear reactor core melt smelting device and smelting method |
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Address after: 063600 industrial agglomeration area of Leting County, Tangshan City, Hebei Province Patentee after: Tangshan Kailai new materials Co., Ltd. Address before: 072750 east side of run he street, Zhuozhou City, Baoding, Hebei Patentee before: Zhuozhou Kai Lai metal material Co., Ltd |