CN214557347U - Vacuum induction melting sheet casting furnace for producing neodymium iron boron magnet - Google Patents
Vacuum induction melting sheet casting furnace for producing neodymium iron boron magnet Download PDFInfo
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- CN214557347U CN214557347U CN202120324778.3U CN202120324778U CN214557347U CN 214557347 U CN214557347 U CN 214557347U CN 202120324778 U CN202120324778 U CN 202120324778U CN 214557347 U CN214557347 U CN 214557347U
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Abstract
The utility model relates to the technical field of magnets, in particular to a vacuum induction melting sheet casting furnace for producing neodymium iron boron magnets; it includes smelting furnace and cast piece stove, first temperature sensor and second temperature sensor are installed respectively to the left and right sides bottom of smelting furnace, the inner wall of smelting furnace just corresponds first temperature sensor and second temperature sensor department respectively and is provided with first protection thermoscope and second protection thermoscope, through adopting first temperature sensor, second temperature sensor, first protection thermoscope and second protection thermoscope, can direct and the inside liquid contact of smelting furnace to adopt the average value of the temperature that first temperature sensor and second temperature sensor measured as final temperature parameter, can avoid the temperature measurement error that causes by the metal dust, make the metallographic change such as neodymium, ferroboron more controllable, more accurate, promote the growth of throwing away cast piece crystalline grain and the refining and the evenly distributed of rich neodymium phase, improve the performance of product.
Description
Technical Field
The utility model belongs to the technical field of the magnet technique and specifically relates to a production of neodymium iron boron magnetism body is with vacuum induction melting cast sheet stove.
Background
At present, the main equipment of the neodymium iron boron permanent magnet rapid hardening smelting and casting sheet technology is composed of a medium-frequency induction power supply, a vacuum unit and a vacuum container. The crucible, the tundish, the roller, the cooling tank and the like for smelting are assembled in a vacuum container. The preparation process comprises the following steps: the smelted raw materials are sprayed out from a crucible nozzle and cast on a rotating cooling copper roller wheel through a tundish. The pouring box is positioned at the upper end of the copper roller wheel in the casting mode, and the cast raw materials directly splash into the cooling tank after contacting the copper roller wheel, the mode is a splashing mode, the contact area with the raw materials and the copper roller wheel is small, the cooling time is short, the thickness of the coverage surface on the copper roller wheel is uneven, the microstructure of a cast sheet is not ideal, and the performance of permanent magnetism is reduced finally; in addition, during the smelting process of the cast piece, dust volatile matters exist in the smelting furnace, and the temperature measurement by adopting non-contact methods such as infrared rays and the like in the prior art can generate certain errors, so that the metallographic changes such as neodymium, ferroboron and the like are difficult to control, and the precision is reduced. Therefore, a vacuum induction melting and sheet casting furnace for producing the neodymium iron boron magnet is provided.
Disclosure of Invention
Not enough to prior art, the utility model provides a cast sheet stove is smelted with vacuum induction to neodymium iron boron magnet production should smelt and cast sheet stove through improving the back, can effectively solve the problem that proposes among the above-mentioned background art.
The technical scheme of the utility model is that:
the utility model provides a production of neodymium iron boron magnetism body is with vacuum induction melting cast sheet stove which characterized in that: the smelting furnace comprises a smelting furnace and a casting furnace, wherein the bottom surface of the smelting furnace is fixedly connected with the ground through a supporting seat, a liquid injection pipe and a feeding pipe are respectively installed on the top surface of the smelting furnace, a first temperature sensor and a second temperature sensor are respectively installed at the bottom of the left side surface and the right side surface of the smelting furnace, the first temperature sensor and the second temperature sensor are arranged in bilateral symmetry, the probe ends of the first temperature sensor and the second temperature sensor are both communicated with the smelting furnace and extend to the interior of the smelting furnace, a first protection temperature measuring body and a second protection temperature measuring body are respectively arranged on the inner wall of the smelting furnace and correspond to the first temperature sensor and the second temperature sensor, the probe ends of the first temperature sensor and the second temperature sensor are respectively positioned inside the first protection temperature measuring body and the second protection temperature measuring body, and the first protection temperature measuring body and the second protection temperature measuring body are both made of high-temperature-resistant aluminum alloy, the supporting seat is provided with a controller, the first temperature sensor and the second temperature sensor are respectively electrically connected with the controller, and the smelting furnace is connected with the sheet casting furnace through a smelting conveying pipe.
As the improvement, the casting furnace includes vacuum unit and intermediate frequency power, the vacuum unit is including the frame, is located the tilting crucible on vacuum unit upper portion, is located the diversion groove of tilting crucible below is fixed in the frame top with the portable centre package that the diversion groove corresponds is located the copper roller of portable centre package one side is located the cooling bath of copper roller one side, the right-hand member intercommunication vacuum unit of smelting the conveyer pipe is connected with the tilting crucible.
As a modification, the width of the side of the movable tundish, which is in contact with the copper roller, is the same.
As an improvement, the movable tundish comprises a movable base, a rotary top plate is correspondingly arranged above the movable base, and a tundish groove is fixedly connected to the rotary top plate.
As the improvement, but mobile base one end rigid coupling screw rod, the screw rod has connect upper end nut and lower extreme female spiral shell respectively soon, rotatory roof one end is located between upper end nut and the lower extreme nut and the cover passes the screw rod is screwed fixedly by upper and lower end nut, but mobile base other end rigid coupling has the rotation pillar, but portable middle package groove one end with the rotation pillar is articulated. And a screw rod nut is fixedly connected below the movable tundish.
As an improvement, the diversion trench is provided with a support column, one end of the support column is hinged with the rack, and the other end of the support column is movably connected with the diversion trench.
As an improvement, the diversion trench is further provided with a support guide rod, one end of the support guide rod is hinged to the rack, the support guide rod is provided with a sliding block, and the sliding block, the support guide rod and the diversion trench can rotate by taking a middle shaft as a rotating shaft and are screwed and fixed through nuts.
As an improvement, a screw rod is arranged on the rack, and the movable tundish is movably connected with the screw rod through a screw rod nut.
As an improvement, the diversion groove with the inboard baffle that is provided with of package in the middle of portable, the diversion groove with package in the middle of portable has still laid bottom refractory slab and side refractory slab.
As an improvement, the side refractory plates are respectively fastened by the bottom refractory plate, the baffle plate and bolts positioned on the baffle plate.
The utility model has the advantages that:
1) in the prior art, the contact end of the tundish and the copper roller is generally in an inverted cone shape, the lower port is small, the width of the tundish is the same, the contact area of the tundish and the copper roller is large, and the casting can be uniform; in the prior art, the crucible directly pours the molten alloy into the tundish and then pours the molten alloy onto the copper roller, and the diversion groove is additionally arranged between the crucible and the tundish, so that the molten alloy can be uniformly dispersed to each corner of the tundish, and the casting is more uniform; the utility model can adjust the inclination angle of the circulation groove by moving the slide block according to the melting alloy with different formulas and matching with different rapid hardening cooling processes, and can well achieve the control of the casting speed, thereby realizing the regulation and control of the microstructure of the cast piece and improving the performance of the magnet; the utility model can adjust the angle and distance of the movable tundish according to actual requirements through a plurality of lead screws and hinge mechanisms, so that the casting is accurate and the operation is convenient;
2) by adopting the first temperature sensor, the second temperature sensor, the first protection temperature measuring body and the second protection temperature measuring body, the temperature measuring device can be directly contacted with liquid inside the smelting furnace, and the average value of the temperatures measured by the first temperature sensor and the second temperature sensor is used as a final temperature parameter, so that the temperature measuring error caused by metal dust can be avoided, the metallographic changes of neodymium, ferroboron and the like are more controllable and accurate, the growth of strip casting crystal grains and the refinement and uniform distribution of neodymium-rich phases are promoted, and the performance of products is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a structure of a slab casting furnace;
FIG. 3 is an enlarged view at I as shown in FIG. 2;
fig. 4 is a top view of an enlarged view at I shown in fig. 2.
In the figure, 1, a vacuum unit; 2. a medium frequency power supply; 3. a frame; 4. a tiltable crucible; 5. a diversion groove; 6. a movable tundish; 7. a copper roller; 8. a cooling tank; 9. a baffle plate; 10. a smelting furnace; 11. a sheet casting furnace; 12. a supporting seat; 13. a liquid injection pipe; 14. a feed pipe; 15. a first temperature sensor; 16. a second temperature sensor; 17. a first protection temperature measuring body; 18. a second protection temperature measuring body; 19. a controller; 20. a smelting conveying pipe; 31. a screw rod; 51. a support pillar; 52. a support guide rod; 53. A slider; 54. a middle shaft; 55. a nut; 61. a movable base; 62. rotating the top plate; 63. a tundish groove; 64. a screw; 65. an upper end nut; 66. a lower end nut; 67. rotating the support; 68. a feed screw nut; 91. a bolt; 101. a bottom refractory plate; 102. side refractory plates.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1-4, a vacuum induction melting and casting furnace for producing neodymium iron boron magnet comprises a melting furnace 10 and a casting furnace 11, wherein the bottom surface of the melting furnace 10 is fixedly connected with the ground through a support base 12, a liquid injection pipe 13 and a feed pipe 14 are respectively installed on the top surface of the melting furnace 10, a first temperature sensor 15 and a second temperature sensor 16 are respectively installed at the bottom of the left side surface and the right side surface of the melting furnace 10, the first temperature sensor 15 and the second temperature sensor 16 are arranged in bilateral symmetry, the probe ends of the first temperature sensor 15 and the second temperature sensor 16 are both communicated with the melting furnace 10 and extend into the melting furnace 10, a first protection temperature measuring body 17 and a second protection temperature measuring body 18 are respectively arranged on the inner wall of the melting furnace 10 and respectively correspond to the first temperature sensor 15 and the second temperature sensor 16, and the probe ends of the first temperature sensor 15 and the second temperature sensor 16 are respectively located inside the first protection temperature measuring body 17 and the second protection temperature measuring body 18, the first protection temperature measuring body 17 and the second protection temperature measuring body 18 are made of high-temperature-resistant aluminum alloy, the support base 12 is provided with a controller 19, the first temperature sensor 15 and the second temperature sensor 16 are respectively electrically connected with the controller 19, and the smelting furnace 10 is connected with the cast sheet furnace 11 through a smelting conveying pipe 20.
The casting furnace 11 includes vacuum unit 1 and intermediate frequency power 2, vacuum unit 1 includes frame 3, is located the inclinable crucible 4 on vacuum unit 1 upper portion, is located the commentaries on classics chute 5 of inclinable crucible 4 below is fixed in frame 3 top with the portable centre package 6 that commentaries on classics chute 5 corresponds is located the copper roller 7 of portable centre package 6 one side is located the cooling bath 8 of copper roller 7 one side, the right-hand member intercommunication vacuum unit 1 of smelting conveyer pipe 20 is connected with inclinable crucible 4, portable centre package 6 with one side width of copper roller 7 contact is the same.
Molten alloy is carried to the tilting crucible 4 on through smelting conveyer pipe 20, the tilting crucible 4 is poured molten alloy according to set angle the diversion groove 5, molten alloy passes through diversion groove 5 flows in portable centre package 6 gradually to copper running roller 7 direction is stretchd, copper running roller 7 rotates the molten alloy cooling that will contact and adsorbs the cooling and form the alloy piece, transmits on to the opposite side of copper running roller 7 falls into cooling bath 8.
The temperatures measured by the first temperature sensor 15 and the second temperature sensor 16 respectively transmit temperature information to the controller 19 in the form of signals, the two temperatures are averaged by the controller 19, and a user uses the average value as a final temperature parameter, so that the temperature inside the smelting furnace 10 is effectively controlled.
The movable tundish 6 comprises a movable base 61, a rotary top plate 62 is correspondingly arranged above the movable base 61, and a tundish groove 63 is fixedly connected to the rotary top plate 62. But movable base 61 one end rigid coupling screw rod 64, screw rod 64 has screwed connection upper end nut 65 and lower extreme nut 66 respectively, rotatory roof 62 one end cover passes screw rod 64 is located between upper end nut 65 and the lower extreme nut 66, and is screwed fixedly by last lower extreme nut, but movable base 61 other end rigid coupling has rotating support post 67, middle package groove 63 one end with rotating support post 67 is articulated. A feed screw nut 68 is fixedly connected below the movable tundish 6.
According to the molten alloy with different formulas, different rapid hardening and cooling processes are matched, and the inclination angle of the movable tundish 6 is adjusted by rotating the upper end nut 65 and the lower end nut 66, so that the cooling and casting speed is controlled.
According to the molten alloys with different formulas, different rapid hardening and cooling processes are matched, the slide block 53 is moved to adjust the inclination angle of the runner 5, so that the casting speed is controlled, the microstructure of the cast piece is regulated and controlled, and the performance of the magnet is improved.
The frame 3 is provided with a screw rod 31, and the movable tundish 6 is movably connected with the screw rod 31 through a screw rod nut 68. The diversion trench 5 with the inboard baffle 9 that is provided with of portable middle package 6, diversion trench 5 with bottom fire-resistant board 101 and side fire-resistant board 102 have still been laid to portable middle package 6. The side refractory plates 102 are fastened by the bottom refractory plate 101 and the baffle plate 9, respectively, and the bolts 91 on the baffle plate 9.
The fire- resistant plates 101 and 102 are easy-to-wear parts, and after being used for a period of time, the fire- resistant plates 101 and 102 are worn due to contact friction with the copper roller 7, the screw rod 31 can be adjusted and rotated in time, and the worn and shortened fire- resistant plates 101 and 102 move towards the copper roller 7 through the screw rod 31 connected with the lower end of the movable tundish 6, can be tightly contacted with the copper roller 7, and ensure rapid solidification and cooling of molten alloy.
The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.
Claims (10)
1. The utility model provides a production of neodymium iron boron magnetism body is with vacuum induction melting cast sheet stove which characterized in that: it includes smelting furnace (10) and cast piece stove (11), the bottom surface of smelting furnace (10) passes through supporting seat (12) and ground rigid coupling, liquid injection pipe (13) and inlet pipe (14) are installed respectively to the top surface of smelting furnace (10), first temperature sensor (15) and second temperature sensor (16) are installed respectively to the left and right sides bottom of smelting furnace (10), first temperature sensor (15) and second temperature sensor (16) bilateral symmetry set up, the probe end of first temperature sensor (15) and second temperature sensor (16) all communicates smelting furnace (10) and extends to its inside, the inner wall of smelting furnace (10) just corresponds first temperature sensor (15) and second temperature sensor (16) respectively and locates to be provided with first protection thermoscope (17) and second protection thermoscope (18), and the probe end of first temperature sensor (15) and second temperature sensor (16) is located first protection thermoscope (17) respectively ) And the inside of second protection temperature-measuring body (18), the material of first protection temperature-measuring body (17) and second protection temperature-measuring body (18) is high temperature resistant aluminum alloy, install controller (19) on supporting seat (12), first temperature sensor (15) and second temperature sensor (16) respectively with controller (19) electric connection, smelting furnace (10) are connected with cast sheet stove (11) through smelting conveyer pipe (20).
2. The vacuum induction melting and sheet casting furnace for producing the neodymium-iron-boron magnet according to claim 1, characterized in that: casting sheet stove (11) are including vacuum unit (1) and intermediate frequency power (2), vacuum unit (1) is located including frame (3) tilting crucible (4) on vacuum unit (1) upper portion is located tilting crucible (5) of tilting crucible (4) below are fixed in frame (3) top with portable pouring basket (6) that tilting basket (5) correspond are located copper running roller (7) of portable pouring basket (6) one side are located cooling bath (8) of copper running roller (7) one side, the right-hand member intercommunication vacuum unit (1) of smelting conveyer pipe (20) is connected with tilting crucible (4).
3. The vacuum induction melting and sheet casting furnace for producing the neodymium-iron-boron magnet according to claim 2, characterized in that: the width of one side of the movable tundish (6) contacted with the copper roller (7) is the same.
4. The vacuum induction melting and sheet casting furnace for producing the neodymium-iron-boron magnet according to claim 3, characterized in that: the movable tundish (6) comprises a movable base (61), a rotary top plate (62) is correspondingly arranged above the movable base (61), and a tundish groove (63) is fixedly connected to the rotary top plate (62).
5. The vacuum induction melting and sheet casting furnace for producing the neodymium-iron-boron magnet according to claim 4, characterized in that: but a movable base (61) one end rigid coupling screw rod (64), screw rod (64) have upper end nut (65) and the female spiral shell (66) of lower extreme to connect soon respectively, rotatory roof (62) one end is located between the female spiral shell (66) of upper end nut (65) and lower extreme and the cover passes screw rod (64) are screwed fixedly by the female spiral shell (66) of upper end nut (65) and lower extreme, but movable base (61) other end rigid coupling has rotating support post (67), middle package groove (63) one end with rotating support post (67) are articulated, middle package groove (63) lower rigid coupling screw nut (68).
6. The vacuum induction melting and sheet casting furnace for producing the neodymium-iron-boron magnet according to claim 5, characterized in that: diversion trench (5) are provided with support column (51), support column (51) one end with frame (3) are articulated, the other end with diversion trench (5) swing joint.
7. The vacuum induction melting and sheet casting furnace for producing the neodymium-iron-boron magnet according to claim 6, characterized in that: the rotary chute (5) is further provided with a supporting guide rod (52), one end of the supporting guide rod (52) is hinged to the rack (3), the supporting guide rod (52) is provided with a sliding block (53), the supporting guide rod (52) and the rotary chute (5) can rotate by taking a middle shaft (54) as a rotary shaft, and meanwhile, the rotary chute is screwed and fixed through a nut (55).
8. The vacuum induction melting and sheet casting furnace for producing the neodymium-iron-boron magnet according to claim 7, characterized in that: the frame (3) is provided with a screw rod (31), and the movable tundish (6) is movably connected with the screw rod (31) through a screw rod nut (68).
9. The vacuum induction melting and sheet casting furnace for producing the neodymium-iron-boron magnet according to claim 8, characterized in that: diversion trench (5) with package (6) inboard is provided with baffle (9) in the middle of the portable, diversion trench (5) with package (6) in the middle of the portable have still laid bottom refractory slab (101) and side refractory slab (102).
10. The vacuum induction melting and sheet casting furnace for producing the neodymium-iron-boron magnet according to claim 9, is characterized in that: the side refractory plates (102) are respectively fastened by the bottom refractory plate (101) and the baffle plate (9) and bolts (91) positioned on the baffle plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120324778.3U CN214557347U (en) | 2021-02-05 | 2021-02-05 | Vacuum induction melting sheet casting furnace for producing neodymium iron boron magnet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120324778.3U CN214557347U (en) | 2021-02-05 | 2021-02-05 | Vacuum induction melting sheet casting furnace for producing neodymium iron boron magnet |
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| Publication Number | Publication Date |
|---|---|
| CN214557347U true CN214557347U (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120324778.3U Active CN214557347U (en) | 2021-02-05 | 2021-02-05 | Vacuum induction melting sheet casting furnace for producing neodymium iron boron magnet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117824356A (en) * | 2024-03-05 | 2024-04-05 | 金昌镍都矿山实业有限公司 | Pure copper smelting furnace and impurity removing process thereof |
-
2021
- 2021-02-05 CN CN202120324778.3U patent/CN214557347U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117824356A (en) * | 2024-03-05 | 2024-04-05 | 金昌镍都矿山实业有限公司 | Pure copper smelting furnace and impurity removing process thereof |
| CN117824356B (en) * | 2024-03-05 | 2024-05-14 | 金昌镍都矿山实业有限公司 | Pure copper smelting furnace and impurity removing process thereof |
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