CN202945305U - Vacuum-induction smelting and rapid hardening equipment for rare-earth permanent-magnet alloy - Google Patents
Vacuum-induction smelting and rapid hardening equipment for rare-earth permanent-magnet alloy Download PDFInfo
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- CN202945305U CN202945305U CN 201220588107 CN201220588107U CN202945305U CN 202945305 U CN202945305 U CN 202945305U CN 201220588107 CN201220588107 CN 201220588107 CN 201220588107 U CN201220588107 U CN 201220588107U CN 202945305 U CN202945305 U CN 202945305U
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Abstract
The utility model relates to vacuum-induction smelting and rapid hardening equipment for a rare-earth permanent-magnet alloy. A process that rare-earth permanent-magnet raw materials are subjected to induction heating under vacuum or a protective atmosphere so as to form molten alloy, a rapid hardening process and oxygen-free discharging are completed by the equipment once. The equipment comprises two chamber doors, a chamber shell body, a maintenance door, a vacuum system, a water cooling system and a control cabinet, wherein the two chamber doors work alternately and are provided with induction furnace bodies. Steel frameworks of the induction furnace bodies are connected with brackets of the chamber doors through rotating shafts; and each furnace body consists of a crucible, a steel framework, heat-resistant bricks and a copper induction coil. A rapid cooling copper roller, a tundish, a vacuumizing device, an inert gas introduction device, a temperature measuring mechanism and pressure control and safety valves are arranged in the chamber shell body. Material collecting tanks are arranged at the lower part of the chamber shell body, are connected with the chamber shell body through isolating flapper valves and are annular tanks with water-cooled jackets; and separation plates are arranged in tank cavities. According to the vacuum-induction smelting and rapid hardening equipment for the rare-earth permanent-magnet alloy, disclosed by the utility model, the performance and production efficiency of products are improved, meanwhile, the process is simplified, and the investment in the equipment is reduced.
Description
Technical field
The present invention relates to a kind of vacuum induction melting rapid hardening equipment, particularly relate to a kind of vacuum melting rapid hardening equipment for permanent-magnet rare-earth NdFeB alloy and rare earth hydrogen storage alloy melting.
Background technology
The Nd-Fe-B rare-earth permanent magnet rapidly quenched magnetic powder mixes with resin etc., can make bonded permanent magnet.Be widely used in electronics, electrical equipment, motor etc., use is more and more widely arranged.Rare earth hydrogen storage alloy is the negative material of nickel metal hydride battery.Be widely used in power tool, hybrid vehicle etc., use is more and more widely arranged.
existing Nd-Fe-B rare-earth permanent magnet rapidly quenched magnetic powder manufacturing process and vacuum melting rapid hardening equipment are raw material or the rare earth hydrogen storage alloy raw materials with RE permanent magnetic alloy, be put in the smelting pot of vacuum melting rapid hardening equipment, heating raw materials is fused into the alloy of melting under vacuum and protective atmosphere, then by tundish under controlled speed, be cast on the outside surface with the copper cooling roller of water-cooled and form alloy sheet, cooled alloy sheet drops to that to carry out secondary on the water-cooled rotating disk that horizontally rotates cooling, after alloy slice is cooling, open the fire door of vacuum rapid hardening equipment, alloy slice is taken out.
The vacuum melting strip casting that uses is at present compared with equipment with previous casting ingot process with equipment, and the performance of product is greatly improved, but still there are many problems in product.When production RE permanent magnetic alloy thin slice, because the secondary inhomogeneous cooling is even, speed of cooling is low, finds the phenomenon of crystal grain skewness and meticulous little crystal grain in the structure of product, and often has ɑ-iron to separate out.When producing rare earth hydrogen storage alloy, also have a small amount of manganese to separate out phenomenon.These phenomenons are having a strong impact on the performance of product, and alloy sheet also will carry out vacuum heat treatment in vacuum heat treatment furnace afterwards, separate out and make uniform crystal particles to eliminate manganese.Existing installation charging and discharging inconvenient operation, the maintenance of the equipment difficulty.
Summary of the invention
For the technical problem of above-mentioned existence, the invention provides a kind of RE permanent magnetic alloy vacuum induction melting rapid hardening equipment.
Technical scheme of the present invention is as follows:
But the present invention includes vacuum induction melting rapid hardening chamber, rewinding tank and the vacuum separation valve door of the two chambers door with alternation, described vacuum induction melting rapid hardening chamber is placed in above the rewinding tank, there is vacuum separation valve door to join between its guide cylinder outlet and rewinding tank, vacuum induction melting rapid hardening chamber also is connected with vacuum system, rare gas element imports pipeline, temperature thermocouple, tensimeter, vacuum gauge and safety valve, two chambers door of described alternation, each chamber door is with an induction furnace that can fascinate.
Described pair of chamber door is with water-cooling sandwich, respectively be hung with the induction furnace with tilting mechanism in the door of two chambers, induction furnace comprises crucible, steel framework, heat resisting brick and copper ruhmkorff coil, crucible is placed in induction furnace inside, the crucible outlet is flow-guiding mouth, the crucible periphery is followed successively by refractory brick, copper ruhmkorff coil and steel framework, and the steel framework of induction furnace connects by rotating shaft with the support frame of chamber door, and described tilting mechanism is connected on chamber door and induction furnace framework.
Described rapid hardening chamber enclosure interior also has tundish, chilling copper roller and guide cylinder, tundish is placed between crucible flow-guiding mouth and chilling copper roller, be connected with three-dimensional adjusting mechanism on tundish, regulate the nozzle of tundish and the gap of chilling copper roller, chilling copper roller is placed in the below of tundish in the housing of chamber, the guide cylinder is provided with vacuum separation valve door below the guide cylinder below chilling copper roller, docking rewinding tank.On described guide drum outer wall, dish has water cooling tube, is provided with pulverization roller in the guide cylinder.Described rapid hardening chamber housing also is provided with Access Door, and the 3# viewing window on Access Door is provided with camera, is arranged with 1#, 2# viewing window, safety valve and temperature thermocouple on the housing top board of chamber.
Described rewinding tank is the annular tank body with water-cooling jacket, its middle part is provided with the water-cooled core pipe that is communicated with water-cooling jacket, be provided with a plurality of finned dividing plates between water-cooled core pipe and inner tank wall in the tank cavity, the tank body outer bottom has the wheel of back and forth walking on pre-buried track.Be connected with the loading line of communication with cavity on described rewinding tank wall.Be provided with Hand-operated butterfly valve at described rewinding tank rewinding mouth end.The present invention also is provided with the water-cooling groove for the cooling discharging tank.
Beneficial effect of the present invention:
The present invention compares with existing vacuum induction heating rapid hardening furnace, and two chambers door of employing has improved production efficiency widely respectively with 1 induction furnace alternation; Rare earth alloy vacuum rapid hardening thin slice processed, cooling and discharging are completed in the protective atmosphere of an equipment, and discharge tank improves cooling efficiency with water-cooling jacket, prevents alloy fragment up time aggregation and adhesion; Can lift also that to put into water-cooling groove cooling, the secondary speed of cooling is fast, cooling evenly, product performance are high, high conformity.The alloy sheet of avoiding existing vacuum induction heating rapid hardening furnace to produce stirs the problem of inhomogeneous, cooling slow and thin slice adhesion, avoided the logistics problem, the problem includes: the oxidized problem of thin slice, greatly improve the consistence of throughput and product under energy-conservation prerequisite, improve simultaneously service life of equipment, shortened the equipment maintenance time.
Description of drawings
Fig. 1 is the RE permanent magnetic alloy vacuum induction melting rapid hardening device structure schematic diagram of invention.
Fig. 2 is the chamber enclosure interior structural representation in Fig. 1.
Fig. 3 is the rewinding jar structure schematic diagram in Fig. 2.
Fig. 4 is the A-A sectional view of Fig. 3.
In figure: 1,1# chamber door; 2, induction furnace; 3, support frame; 4,2# chamber door; 5, chamber housing; 6, vacuum system; 7, Access Door; 8, housing; 9, medium frequency induction power supply; 10, steel framework; 11, tilting mechanism; 12,1# viewing window; 13, ruhmkorff coil; 14, crucible; 15, heat resisting brick and magnesia; 16,2# viewing window; 17, tundish; 18, chilling copper roller; 19, pulverization roller; 20,3# viewing window; 21, guide cylinder; 22, vacuum separation valve door; 23, rewinding tank; 24, rotating shaft; 25, flow-guiding mouth; 26, Hand-operated butterfly valve; 27, water-cooling jacket; 28, fin; 29, wheel; 30, water-cooled core pipe; 31, loading line, 32. water-ins, 33. water outlets, 34. windlasss, 35. dividing plates.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
embodiment: as shown in Figure 1, but the present invention includes the vacuum induction melting rapid hardening chamber of two chambers door with alternation (being respectively 1# chamber door 1 and 2# chamber door 4), rewinding tank 23 and vacuum separation valve door 22, described rapid hardening chamber is placed in rewinding tank 23 tops, there is vacuum separation valve door 22 to join between its guide cylinder 21 outlets and rewinding tank 23, vacuum induction melting rapid hardening chamber also is connected with vacuum system 6(existing structure), rare gas element imports pipeline, the armored temperature measuring thermopair, vacuum gauge, tensimeter and safety valve, two chambers door of described alternation is respectively with an induction furnace that can fascinate 2.
Described rapid hardening chamber is a vacuum chamber, and an end is two chamber doors 1,4 alternations, and the middle part is chamber housing 5, and the other end is provided with Access Door 7; Two Room doors are provided with induction furnace 2 all with water-cooling sandwich in its chamber door; Induction furnace 2 comprises crucible 14, steel framework 10, heat resisting brick and magnesia 15 and copper ruhmkorff coil 13, crucible 14 peripheries are followed successively by refractory brick and magnesia 15, copper ruhmkorff coil 10 and steel framework 10, crucible 14 sides magnesia ramming, crucible 14 is placed in bottom of furnace body by steel framework 10, and the crucible outlet is flow-guiding mouth 25; Induction furnace 2 and 1# chamber door 1 are connected by rotating shaft 24 with support frame 3 on 2# chamber door 4, tilting mechanism 11 is arranged on induction furnace 2, described tilting mechanism 11 is comprised of the wireline pulley group, pulley is separately fixed on chamber door and induction furnace steel framework 10, steel wire winding is on tackleblock, the end is connected on the interior windlass 34 of stove, and elevator fascinates.Tilting mechanism 11 can make rotating shaft 24 rotations of induction furnace 2 on support frame 3.3# viewing window 20 on Access Door 7 is provided with camera, Real Time Observation crucible 14 and chilling copper roller 18 situations, 1#, 2 # viewing window 12,16, safety valve and temperature thermocouple are arranged on chamber housing 5, described temperature thermocouple is portable armoured thermocouple, during thermometric, thermopair can be visited in molten steel, and used time not is away from crucible 14.Ruhmkorff coil 13 connects housing 8 by medium frequency induction power supply 9.
as shown in Figure 2, described rapid hardening chamber enclosure interior also is provided with tundish 17, chilling copper roller 18 and guide cylinder 21, tundish 17 is placed between crucible flow-guiding mouth 25 and chilling copper roller 18, tundish 17 is comprised of framework and the refractory materials of steel, be provided with nozzle in tundish 17 bottoms, but line slideway Manual three-dimensional regulating mechanism is adopted in the gap of nozzle and chilling copper roller 18, described three-dimensional adjusting mechanism is existing structure, that the line slide rail assembly that cooperatively interacts is set respectively on three direction of principal axis, tundish is fixed on the platen of an axle in three axles, this platen is along X-axis, Y-axis and Z-direction move.Chilling copper roller 18 is placed in the below of the interior tundish 17 of chamber housing 5, and guide cylinder 21 is below chilling copper roller 18, and guide cylinder 21 belows are provided with vacuum separation valve door 22, docking rewinding tank 23.On described guide cylinder 21 outer walls, dish has water cooling tube, is provided with pulverization roller 19 in guide cylinder 21.
As shown in Figure 3, Figure 4, described rewinding tank 23 is the annular tank bodies with water-cooling jacket 27, there is the water-cooled core pipe 30 that communicates with water-cooling jacket 27 at the middle part, have the entery and delivery port 32,33 that communicates with water-cooling jacket 27 on tank body, be provided with a plurality of dividing plates 35 with fin 28 between water-cooled core pipe 30 and inner tank wall in the tank cavity, the tank body outer bottom is provided with the wheel 29 of back and forth walking on pre-buried track; Be provided with Hand-operated butterfly valve 26 at rewinding tank 23 rewinding mouth ends, be connected with loading line 31 on tank wall.
The present invention can also be provided with the water-cooling groove of an external attached, is used for 23 liftings of rewinding tank and enters tank, the direct contact cooling of tank body and water.
The present invention is when work; under vacuum and/or protective atmosphere; with being located at the outer medium frequency induction power supply of vacuum chamber 9 to ruhmkorff coil 13 energisings; begin the heating of the furnace charge in crucible 14; after furnace charge melts and reaches abundant alloying; by body of heater tilting mechanism 11, the alloy of melting flows out along the flow-guiding mouth 25 of crucible 14, is cast in the tundish 17 of below.Tundish 17 is provided with nozzle in the place that contacts with chilling copper roller 18, and to the outside surface of the chilling copper roller 18 of rotation, molten alloy is cooling on chilling copper roller 18 surfaces, forms alloy sheet by the nozzle spray to cast for the alloy of the melting in tundish.Thin slice is along with the rotation of chilling copper roller 18 drops in the guide cylinder 21 of below.Be provided with pulverization roller 19 in guide cylinder 21, alloy sheet is broken into after by pulverization roller 19 in the rewinding tank 23 that small shreds drops to guide cylinder 21 below vacuum separation valve door 22 belows.After casting is completed, close vacuum separation valve door 22, the rewinding tank 23 that fragment is housed moves to an end, and another rewinding tank 23 docks with vacuum separation valve door 22.So far, complete a stove products production.Rewinding tank 23 is with water-cooling jacket 27, and in the middle part of the tank cavity, water-cooled core pipe 30 is communicated with water-cooling jacket 27, and dividing plate 35 is arranged in the tank cavity.After vacuum chamber pressure and atmospheric equilibrium, open 1# chamber door 1, close 2# chamber door 4, by vacuum system 6(existing structure) vacuumize, inflated with nitrogen, the heating of vacuum chamber internal induction stove begins next furnaceman and does.
Use procedure of the present invention:
Under barometric point, to be one or more of Nd, Pr, Dy, Tb rare earth element by the R-Fe-B-M(R after material composition and weight percent batching, M is one or more in Co, Al, Cu, Zr, Ga) raw material, in the crucible 14 in the 1# chamber door 1 of the vacuum induction melting rapid hardening equipment of packing into and 2# chamber door 4.Manual-lock 1# chamber door 1 or 2# chamber door 4; close Access Door 7 and vacuum separation valve door 22; vacuum system 6 by lobe pump and double parallel slide valve pump unit is depressured to specified pressure (for example 5Pa is following); open shielding gas importing valve and be filled with shielding gas in stove; under vacuum and protective atmosphere; start medium frequency induction power supply 9, utilize induction heating that raw material is smelted into molten alloy.
After abundant alloying (for example refining is 30 minutes), at the temperature of setting (for example 1460 ℃), by crucible tilting mechanism 11, the alloy of melting flows out along the flow-guiding mouth 25 of crucible 14, is cast in the tundish 17 of below.By the nozzle on tundish 17, that the alloy liquid spray to cast is cooling to the outside surface of chilling copper roller 18 of rotation.The rotating speed of rotation chilling copper roller 18 can be set according to processing requirement.
Through the cooling alloy sheet of rotation chilling copper roller 18, fall into the water-cooled rewinding tank 23 that is positioned at the below by guide cylinder 21, guide cylinder 21 is provided with pulverization roller 19, is wound with water cooling tube on guide cylinder 21 walls.Guide cylinder 21 belows are vacuum separation valve doors 22.
Rewinding tank 23 is with water-cooling jacket 27, and in the tank cavity, the middle part has water-cooled core pipe 30 to communicate with water-cooling jacket 27, and having between water-cooled core pipe 30 and water-cooling jacket 27 inwalls in the middle part of the tank cavity has dividing plate 35, improves cooling efficiency, prevents alloy fragment up time aggregation and adhesion.
This professional those of ordinary skill should be able to be understood essence of the present invention, and recognizes that concrete implementation detail of the present invention can make a variety of changes in the claim protection domain.
Claims (9)
1. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment, it is characterized in that: but comprise vacuum induction melting rapid hardening chamber, rewinding tank and the vacuum separation valve door of the two chambers door with alternation, described vacuum induction melting rapid hardening chamber is placed in above the rewinding tank, there is vacuum separation valve door to join between its guide cylinder outlet and rewinding tank, vacuum induction melting rapid hardening chamber also is connected with vacuum system, rare gas element imports pipeline, temperature thermocouple, tensimeter, vacuum gauge and safety valve, two chambers door of described alternation, each chamber door is with an induction furnace that can fascinate.
2. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 1, it is characterized in that: described pair of chamber door is with water-cooling sandwich, respectively be hung with the induction furnace with tilting mechanism in the door of two chambers, induction furnace comprises crucible, steel framework, heat resisting brick and copper ruhmkorff coil, crucible is placed in induction furnace inside, the crucible outlet is flow-guiding mouth, the crucible periphery is followed successively by refractory brick, copper ruhmkorff coil and steel framework, the steel framework of induction furnace connects by rotating shaft with the support frame of chamber door, and described tilting mechanism is connected on chamber door and induction furnace framework.
3. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 1, it is characterized in that: described rapid hardening chamber enclosure interior also has tundish, chilling copper roller and guide cylinder, tundish is placed between crucible flow-guiding mouth and chilling copper roller, be connected with three-dimensional adjusting mechanism on tundish, regulate the nozzle of tundish and the gap of chilling copper roller, chilling copper roller is placed in the below of tundish in the housing of chamber, the guide cylinder is below chilling copper roller, guide cylinder below is provided with vacuum separation valve door, docking rewinding tank.
4. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 3 is characterized in that: on described guide drum outer wall, dish has water cooling tube, is provided with pulverization roller in the guide cylinder.
5. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 3, it is characterized in that: described rapid hardening chamber housing also is provided with Access Door, 3# viewing window on Access Door is provided with camera, is arranged with 1#, 2# viewing window, safety valve and temperature thermocouple on the housing top board of chamber.
6. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 1, it is characterized in that: described rewinding tank is the annular tank body with water-cooling jacket, its middle part is provided with the water-cooled core pipe that is communicated with water-cooling jacket, be provided with a plurality of finned dividing plates between water-cooled core pipe and inner tank wall in the tank cavity, the tank body outer bottom has the wheel of back and forth walking on pre-buried track.
7. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 6, is characterized in that: the loading line that is connected with communication with cavity on described rewinding tank wall.
8. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 6, is characterized in that: be provided with Hand-operated butterfly valve at described rewinding tank rewinding mouth end.
9. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 1, is characterized in that: also be provided with the water-cooling groove for the cooling discharging tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220588107 CN202945305U (en) | 2012-11-08 | 2012-11-08 | Vacuum-induction smelting and rapid hardening equipment for rare-earth permanent-magnet alloy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220588107 CN202945305U (en) | 2012-11-08 | 2012-11-08 | Vacuum-induction smelting and rapid hardening equipment for rare-earth permanent-magnet alloy |
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| CN202945305U true CN202945305U (en) | 2013-05-22 |
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| CN 201220588107 Withdrawn - After Issue CN202945305U (en) | 2012-11-08 | 2012-11-08 | Vacuum-induction smelting and rapid hardening equipment for rare-earth permanent-magnet alloy |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769597A (en) * | 2013-07-08 | 2014-05-07 | 湖南久泰冶金科技有限公司 | Technology and device for continuously manufacturing high-quality amorphous alloy powder materials on large scale |
| WO2014071846A1 (en) * | 2012-11-08 | 2014-05-15 | 沈阳中北真空科技有限公司 | Vacuum-induced smelting and rapid hardening apparatus for rare earth permanent magnetic alloy |
| CN104959560A (en) * | 2015-05-28 | 2015-10-07 | 洛阳八佳电气科技股份有限公司 | Material collecting device of pot type material recovering vacuum induction melting rapid hardening furnace |
| CN107262688A (en) * | 2016-04-08 | 2017-10-20 | 沈阳中北真空技术有限公司 | A kind of vacuum melting rapid hardening equipment with secondary cooling and rapid hardening alloy manufacturing methods |
| CN112024836A (en) * | 2020-07-06 | 2020-12-04 | 南京涵曦月自动化科技有限公司 | Automatic ingot casting control system for vacuum electron beam furnace |
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2012
- 2012-11-08 CN CN 201220588107 patent/CN202945305U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014071846A1 (en) * | 2012-11-08 | 2014-05-15 | 沈阳中北真空科技有限公司 | Vacuum-induced smelting and rapid hardening apparatus for rare earth permanent magnetic alloy |
| CN103801667A (en) * | 2012-11-08 | 2014-05-21 | 沈阳中北真空科技有限公司 | Rare earth permanent magnetic alloy vacuum induction melting rapid hardening equipment |
| CN103801667B (en) * | 2012-11-08 | 2016-01-06 | 沈阳中北真空科技有限公司 | RE permanent magnetic alloy vacuum induction melting rapid hardening equipment |
| CN103769597A (en) * | 2013-07-08 | 2014-05-07 | 湖南久泰冶金科技有限公司 | Technology and device for continuously manufacturing high-quality amorphous alloy powder materials on large scale |
| CN104959560A (en) * | 2015-05-28 | 2015-10-07 | 洛阳八佳电气科技股份有限公司 | Material collecting device of pot type material recovering vacuum induction melting rapid hardening furnace |
| CN107262688A (en) * | 2016-04-08 | 2017-10-20 | 沈阳中北真空技术有限公司 | A kind of vacuum melting rapid hardening equipment with secondary cooling and rapid hardening alloy manufacturing methods |
| CN107262688B (en) * | 2016-04-08 | 2019-04-02 | 沈阳中北真空技术有限公司 | A kind of vacuum melting rapid hardening equipment and rapid hardening alloy manufacturing methods with secondary cooling |
| CN112024836A (en) * | 2020-07-06 | 2020-12-04 | 南京涵曦月自动化科技有限公司 | Automatic ingot casting control system for vacuum electron beam furnace |
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Owner name: SHENYANG NORTH-VACUUM TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHENYANG ZHONGBEI VACUUM MAGNETIC ELECTRICITY TECHNOLOGY CO., LTD. Effective date: 20140128 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140128 Address after: 110200 No. 19, main street, Shenyang coastal economic zone, Liaoning Province Patentee after: SHENYANG ZHONGBEI VACUUM DEVICE CO., LTD. Address before: 110200 No. 19, main street, Shenyang coastal economic zone, Liaoning Province Patentee before: Shenyang Zhongbei Vacuum Magnet Technology Co., Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130522 Effective date of abandoning: 20160106 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130522 Effective date of abandoning: 20160106 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |