CN103801667B - RE permanent magnetic alloy vacuum induction melting rapid hardening equipment - Google Patents
RE permanent magnetic alloy vacuum induction melting rapid hardening equipment Download PDFInfo
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- CN103801667B CN103801667B CN201210445449.XA CN201210445449A CN103801667B CN 103801667 B CN103801667 B CN 103801667B CN 201210445449 A CN201210445449 A CN 201210445449A CN 103801667 B CN103801667 B CN 103801667B
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- rapid hardening
- vacuum
- vacuum induction
- induction melting
- room
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
- F27B14/061—Induction furnaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/12—Travelling or movable supports or containers for the charge
Abstract
A kind of RE permanent magnetic alloy vacuum induction melting rapid hardening equipment; be become molten alloy technique, strip casting and anaerobic discharging once to complete in invention equipment rare earth permanent magnet raw material eddy-current heating under vacuum or protective atmosphere, equipment comprises the housing with induction two rooms door of body of heater, vacuum induction rapid hardening room of alternation, AD, vacuum system, water-cooling system and switch board.Induction body of heater steel framework is connected by rotating shaft with the support of room door, and body of heater is made up of crucible, steel framework, refractory brick and copper induction coil.Chilling copper roller, tundish, vacuum extractor, inert gas gatherer, temperature measuring mechanism, Stress control and safety valve is had in the housing of vacuum induction rapid hardening room.Rewinding tank is below the housing of vacuum induction rapid hardening room, and be connected with it by isolation push-pull valve, rewinding tank is the annular tank body of water-cooling jacket, and tank has dividing plate in chamber.Invention increases properties of product and production efficiency, simplify technique simultaneously, decrease equipment investment.
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
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., have use more and more widely.Rare earth hydrogen storage alloy is the negative material of Ni-MH battery.Be widely used in electric tool, hybrid vehicle etc., have use more and more widely.
Existing Nd-Fe-B rare-earth permanent magnet rapidly quenched magnetic powder manufacturing process and vacuum melting rapid hardening equipment are by the raw material of RE permanent magnetic alloy or rare earth hydrogen storage alloy raw material, be put in the melting kettle 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 to be with on the outer surface of the copper chill roll of water-cooled and form alloy sheet, cooled alloy sheet drops on the water-cooled rotating disk that horizontally rotates and carries out cooling twice, after alloy sheet cooling, open the fire door of vacuum rapid hardening equipment, alloy sheet is taken out.
The vacuum melting strip casting of current use is compared with equipment with previous casting ingot process with equipment, and the performance of product is greatly improved, but product still exists many problems.When producing RE permanent magnetic alloy thin slice, because cooling twice is uneven, cooling velocity 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, a small amount of manganese is also had to separate out phenomenon.These phenomenons drastically influence the performance of product, and alloy sheet also will carry out vacuum heat in vacuum heat treatment furnace afterwards, separate out to eliminate manganese and make crystal grain homogenising.Existing equipment charging and draw operation inconvenience, plant maintenance 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.
The present invention includes have can the vacuum induction melting rapid hardening room of two rooms door of alternation, rewinding tank and vacuum separation valve door, described vacuum induction melting rapid hardening room is placed in above rewinding tank, it is led between cartridge outlet with rewinding tank has vacuum separation valve door to connect, vacuum induction melting rapid hardening room is also connected with vacuum system, inert gas incoming line, temperature thermocouple, Pressure gauge, vacuum gauge and safety valve, described can two rooms door of alternation, the induction furnace that each room door can fascinate with.
Further, described two rooms door is with water-cooling sandwich, the induction furnace of band tilting equipment is respectively hung with in the door of two rooms, induction furnace comprises crucible, steel framework, refractory brick and copper induction coil, crucible is placed in induction furnace inside, and crucible outlet is flow-guiding mouth, and crucible periphery is followed successively by refractory brick, copper induction coil and steel framework, the steel framework of induction furnace is connected by rotating shaft with the support frame of room door, and described tilting equipment is connected on room door and induction furnace framework.
Further, the enclosure interior of described vacuum induction rapid hardening room also has tundish, chilling copper roller and guide cylinder, tundish is placed between crucible flow-guiding mouth and chilling copper roller, tundish is connected with three-dimensional adjusting mechanism, regulate the nozzle of tundish and the gap of chilling copper roller, the below of tundish in the housing that chilling copper roller is placed in vacuum induction rapid hardening room, guide cylinder is in the below of chilling copper roller, vacuum separation valve door is provided with, docking rewinding tank below guide cylinder.
Further, on described guide drum outer wall, dish has water cooling tube, is provided with pulverization roller in guide cylinder.
Further, the housing of described vacuum induction rapid hardening room is also provided with AD, and the 3# observation window on AD is provided with camera, and the cover top plate of vacuum induction rapid hardening room is arranged with 1#, 2# observation window, safety valve and temperature thermocouple.
Further, described rewinding tank is the annular tank body with water-cooling jacket, the water-cooled core pipe be communicated with water-cooling jacket is provided with in the middle part of it, in the cavity of rewinding tank water-cooled core pipe and rewinding tank inner tank wall between be provided with multiple finned dividing plate, the tank body outer bottom of rewinding tank has the wheel of back and forth walking on pre-buried track.
Further, described rewinding tank wall is connected with the loading line of communication with cavity.
Further, described rewinding tank rewinding mouth end is provided with Hand-operated butterfly valve.
Further, the water-cooling groove for cooling rewinding tank is also provided with.
Beneficial effect of the present invention:
Compared with the present invention heats rapid hardening furnace with existing vacuum induction, two rooms door of employing, respectively with 1 induction furnace alternation, greatly increases production efficiency; Rare earth alloy vacuum rapid hardening thin slice, cooling and discharging complete in the protective atmosphere of an equipment, and discharge tank, with water-cooling jacket, improves cooling effectiveness, prevents alloy fragment up time aggregation and adhesion; Also can lift and put into water-cooling groove and cool, cooling twice speed is fast, and evenly, properties of product are high, and uniformity is good in cooling.The alloy sheet stirring avoiding existing vacuum induction heating rapid hardening furnace to produce is uneven, cooling is slow and the problem of thin slice adhesion, avoid the problem that the thin slice of logistics existence is oxidized, the uniformity of production capacity and product is greatly improved under energy-conservation prerequisite, improve service life of equipment simultaneously, shorten the equipment maintenance time.
Accompanying drawing explanation
Fig. 1 is the RE permanent magnetic alloy vacuum induction melting rapid hardening device structure schematic diagram of invention.
Fig. 2 is the housing interior structure schematic diagram of the vacuum induction rapid hardening room 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# room door; 2, induction furnace; 3, support frame; 4,2# room door; 5, the housing of vacuum induction rapid hardening room; 6, vacuum system; 7, AD; 8, switch board; 9, medium frequency induction power supply; 10, steel framework; 11, tilting equipment; 12,1# observation window; 13, induction coil; 14, crucible; 15, refractory brick and magnesia; 16,2# observation window; 17, tundish; 18, chilling copper roller; 19, pulverization roller; 20,3# observation 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 inlets, 33. delivery ports, 34. hoist engines, 35. dividing plates.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described.
Embodiment: as shown in Figure 1, the present invention includes that have can the vacuum induction melting rapid hardening room of two rooms door (being respectively 1# room door 1 and 2# room door 4) of alternation, rewinding tank 23 and vacuum separation valve door 22, described rapid hardening room is placed in above rewinding tank 23, its guide cylinder 21 exports has vacuum separation valve door 22 to connect between rewinding tank 23, vacuum induction melting rapid hardening room is also connected with vacuum system 6 (existing structure), inert gas incoming line, armored temperature measuring thermocouple, vacuum gauge, Pressure gauge and safety valve, described can two rooms door of alternation respectively with an induction furnace that can fascinate 2.
Described rapid hardening room is a vacuum chamber, and one end is two room doors 1,4 alternations, and middle part is the housing 5 of vacuum induction rapid hardening room, and the other end is provided with AD 7; Two Room doors, all with water-cooling sandwich, are provided with induction furnace 2 in its room door; Induction furnace 2 comprises crucible 14, steel framework 10, refractory brick and magnesia 15 and copper induction coil 13, crucible 14 periphery is followed successively by refractory brick and magnesia 15, copper induction coil 10 and steel framework 10, crucible 14 side magnesia ramming, crucible 14 is placed in bottom of furnace body by steel framework 10, and crucible outlet is flow-guiding mouth 25; Induction furnace 2 is connected by rotating shaft 24 with the support frame 3 on 2# room door 4 with 1# room door 1, induction furnace 2 there is tilting equipment 11, described tilting equipment 11 is made up of wireline pulley group, pulley is separately fixed on room door and induction furnace steel framework 10, steel wire winding is on assembly pulley, end is connected in stove on hoist engine 34, and elevator fascinates.Tilting equipment 11 can make the rotating shaft 24 of induction furnace 2 on support frame 3 rotate.3# observation window 20 on AD 7 is provided with camera, Real Time Observation crucible 14 and chilling copper roller 18 situation, the housing 5 of vacuum induction rapid hardening room has 1#, 2# observation window 12,16, safety valve and temperature thermocouple, described temperature thermocouple is portable armoured thermocouple, during thermometric, thermocouple can be visited in molten steel, not the used time, away from crucible 14.Induction coil 13 is by medium frequency induction power supply 9 connection control cabinet 8.
As shown in Figure 2, the enclosure interior of described vacuum induction rapid hardening room is also 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 made up of the framework of steel and refractory material, nozzle is provided with bottom tundish 17, the gap of nozzle and chilling copper roller 18 adopts line slideway can Manual three-dimensional governor motion, described three-dimensional adjusting mechanism is existing structure, that the line slide rail assembly cooperatively interacted 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.The below of tundish 17 in the housing 5 that chilling copper roller 18 is placed in vacuum induction rapid hardening room, guide cylinder 21, in the below of chilling copper roller 18, is provided with vacuum separation valve door 22 below guide cylinder 21, docking rewinding tank 23.On described guide cylinder 21 outer wall, 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 communicated with water-cooling jacket 27 at middle part, tank body has the entery and delivery port 32,33 communicated with water-cooling jacket 27, in the cavity of rewinding tank water-cooled core pipe 30 and rewinding tank inner tank wall between be provided with the dividing plate 35 of multiple band fin 28, the tank body outer bottom of rewinding tank is provided with the wheel 29 of back and forth walking on pre-buried track; Rewinding tank 23 rewinding mouth end is provided with Hand-operated butterfly valve 26, tank wall is connected with loading line 31.
The present invention can also be provided with the water-cooling groove of an external attached, and lift in tank for rewinding tank 23, tank body directly contacts cooling with water.
The present invention operationally; under vacuum and/or protective atmosphere; be energized to induction coil 13 with the medium frequency induction power supply 9 be located at outside vacuum chamber; start the furnace charge heating in crucible 14; until load melting and after reaching abundant alloying; by body of heater tilting equipment 11, the alloy of melting flows out along the flow-guiding mouth 25 of crucible 14, is cast in the tundish 17 of below.The place that tundish 17 is contacting with chilling copper roller 18 is provided with nozzle, and the alloy of the melting in tundish is by nozzle spray to cast on the outer surface of the chilling copper roller 18 rotated, and molten alloy cools on the surface at chilling copper roller 18, forms alloy sheet.Thin slice drops in the guide cylinder 21 of below along with the rotation of chilling copper roller 18.Be provided with pulverization roller 19 in guide cylinder 21, alloy sheet is by the rewinding tank 23 that is broken into fractionlet after pulverization roller 19 and drops to below guide cylinder 21 below vacuum separation valve door 22.After having cast, close vacuum separation valve door 22, the rewinding tank 23 that fragment is housed moves to one end, and another rewinding tank 23 docks with vacuum separation valve door 22.So far, a stove production is completed.Rewinding tank 23 is with water-cooling jacket 27, and in the middle part of tank cavity, water-cooled core pipe 30 is communicated with water-cooling jacket 27, has dividing plate 35 in the cavity of rewinding tank.When after vacuum chamber pressure and atmospheric equilibrium, open 1# room door 1, close 2# room door 4, vacuumized, inflated with nitrogen by vacuum system 6 (existing structure), vacuum chamber internal induction stove heats, and starts next furnaceman and does.
Use procedure of the present invention:
At atmosheric pressure, by by the R-Fe-B-M after material composition and percentage by weight batching, (R is one or more of Nd, Pr, Dy, Tb rare earth element, M is one or more in Co, Al, Cu, Zr, Ga) raw material, load in the crucible 14 in the 1# room door 1 of vacuum induction melting rapid hardening equipment and 2# room door 4.Manual-lock 1# room door 1 or 2# room door 4; close AD 7 and vacuum separation valve door 22; authorized pressure (such as below 5Pa) is depressured to by the vacuum system 6 of lobe pump and double parallel slide valve pump unit; open protective gas importing valve and be filled with protective gas in stove; under vacuum and protective atmosphere; start medium frequency induction power supply 9, utilize eddy-current heating that raw material is smelted into molten alloy.
After abundant alloying (such as refining 30 minutes), at the temperature of setting (such as 1460 DEG C), by crucible tilting equipment 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, alloy liquid spray to cast is cooled to the outer surface of the chilling copper roller 18 rotated.The rotating speed rotating chilling copper roller 18 can set according to technological requirement.
Through the alloy sheet of over-rotation chilling copper roller 18 cooling, fallen into the water-cooled rewinding tank 23 being positioned at below by guide cylinder 21, guide cylinder 21 is provided with pulverization roller 19, and guide cylinder 21 wall is wound with water cooling tube.It is vacuum separation valve door 22. below guide cylinder 21
Rewinding tank 23 is with water-cooling jacket 27, in the cavity of rewinding tank, middle part has water-cooled core pipe 30 to communicate with water-cooling jacket 27, have in the middle part of tank cavity between water-cooled core pipe 30 and water-cooling jacket 27 inwall and have dividing plate 35, improve cooling effectiveness, prevent alloy fragment up time aggregation and adhesion.
The those of ordinary skill of this specialty should be able to understand essence of the present invention, and recognizes that specific embodiment of the invention details can make a variety of changes in claims.
Claims (9)
1. a RE permanent magnetic alloy vacuum induction melting rapid hardening equipment, it is characterized in that: comprise that have can the vacuum induction melting rapid hardening room of two rooms door of alternation, rewinding tank and vacuum separation valve door, described vacuum induction melting rapid hardening room is placed in above rewinding tank, it is led between cartridge outlet with rewinding tank has vacuum separation valve door to connect, vacuum induction melting rapid hardening room is also connected with vacuum system, inert gas incoming line, temperature thermocouple, Pressure gauge, vacuum gauge and safety valve, described can two rooms door of alternation, the induction furnace that each room door can fascinate with one.
2. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 1, it is characterized in that: described two rooms door is with water-cooling sandwich, the induction furnace of band tilting equipment is respectively hung with in the door of two rooms, induction furnace comprises crucible, steel framework, refractory brick and copper induction coil, crucible is placed in induction furnace inside, crucible outlet is flow-guiding mouth, crucible periphery is refractory brick, copper induction coil and steel framework, crucible side magnesia ramming, crucible is placed in bottom of furnace body by steel framework, induction coil is wrapped in outside steel framework, the steel framework of induction furnace is connected by rotating shaft with the support frame of room door, described tilting equipment is connected on room 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: the enclosure interior of described vacuum induction melting rapid hardening room also has tundish, chilling copper roller and guide cylinder, tundish is placed between crucible flow-guiding mouth and chilling copper roller, tundish is connected with three-dimensional adjusting mechanism, regulate the nozzle of tundish and the gap of chilling copper roller, the below of tundish in the housing that chilling copper roller is placed in vacuum induction melting rapid hardening room, guide cylinder is in the below of chilling copper roller, vacuum separation valve door is provided with, docking rewinding tank below guide cylinder.
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 guide cylinder.
5. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 3, it is characterized in that: the housing of described vacuum induction melting rapid hardening room is also provided with AD, 3# observation window on AD is provided with camera, and the cover top plate of vacuum induction melting rapid hardening room is arranged with 1#, 2# observation window, safety valve and temperature thermocouple.
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, the water-cooled core pipe be communicated with water-cooling jacket is provided with in the middle part of it, in the cavity of rewinding tank water-cooled core pipe and rewinding tank inner tank wall between be provided with multiple finned dividing plate, the tank body outer bottom of rewinding tank 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 described rewinding tank wall being connected with communication with cavity.
8. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 6, is characterized in that: described rewinding tank rewinding mouth end is provided with Hand-operated butterfly valve.
9. RE permanent magnetic alloy vacuum induction melting rapid hardening equipment according to claim 1, is characterized in that: be also provided with the water-cooling groove for cooling rewinding tank.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445449.XA CN103801667B (en) | 2012-11-08 | 2012-11-08 | RE permanent magnetic alloy vacuum induction melting rapid hardening equipment |
| PCT/CN2013/086637 WO2014071846A1 (en) | 2012-11-08 | 2013-11-06 | Vacuum-induced smelting and rapid hardening apparatus for rare earth permanent magnetic alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445449.XA CN103801667B (en) | 2012-11-08 | 2012-11-08 | RE permanent magnetic alloy vacuum induction melting rapid hardening equipment |
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| CN103801667A CN103801667A (en) | 2014-05-21 |
| CN103801667B true CN103801667B (en) | 2016-01-06 |
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| CN201210445449.XA Active CN103801667B (en) | 2012-11-08 | 2012-11-08 | RE permanent magnetic alloy vacuum induction melting rapid hardening equipment |
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| CN (1) | CN103801667B (en) |
| WO (1) | WO2014071846A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226942B (en) * | 2014-09-12 | 2016-04-06 | 沈阳中北真空技术有限公司 | The manufacture method of two crucible vacuum melting rapid hardening equipment and permanent-magnet alloy, permanent magnet |
| CN104226943B (en) * | 2014-09-12 | 2017-01-11 | 沈阳中北真空技术有限公司 | Vacuum melting rapid hardening equipment as well as manufacturing method of permanent magnet rapid hardening alloy and manufacturing method of permanent magnet |
| JP6193325B2 (en) * | 2015-09-28 | 2017-09-06 | アイシン高丘株式会社 | Hybrid metal melting furnace |
| CN105689660B (en) * | 2016-02-26 | 2017-11-28 | 沈阳广泰真空科技有限公司 | A kind of two-sided cooling multifunctional efficient vacuum rapid hardening furnace |
| CN108302937B (en) * | 2018-01-02 | 2019-08-16 | 北京航空航天大学 | A kind of high-temperature heating system being able to carry out on-line measurement and the pickup of full strain information |
| EP3957939B1 (en) * | 2020-08-20 | 2023-09-20 | ABP Induction Systems GmbH | Assembly for recycling contaminated metal scrap |
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| Publication number | Publication date |
|---|---|
| CN103801667A (en) | 2014-05-21 |
| WO2014071846A1 (en) | 2014-05-15 |
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