CN107262687B - A kind of manufacturing method of vacuum melting rapid hardening equipment and rapid hardening alloy - Google Patents
A kind of manufacturing method of vacuum melting rapid hardening equipment and rapid hardening alloy Download PDFInfo
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- CN107262687B CN107262687B CN201610216340.7A CN201610216340A CN107262687B CN 107262687 B CN107262687 B CN 107262687B CN 201610216340 A CN201610216340 A CN 201610216340A CN 107262687 B CN107262687 B CN 107262687B
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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
- B22D11/0637—Accessories therefor
- B22D11/0697—Accessories therefor for casting in a protected atmosphere
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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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention discloses a kind of vacuum melting rapid hardening equipment and a kind of manufacturing method of rapid hardening alloy.Vacuum melting rapid hardening equipment includes vacuum charging room, vacuum melting room, rotating roller mobile room, alloy sheet cooling chamber, Storage appts.；Charging basket elevating mechanism, station dial and the trolley of reciprocating movement are provided in vacuum charging room, water cooling rotating roller arrangement is moved to vacuum melting room from the mobile room of rotating roller when work, alloy sheet cooling chamber is connected with vacuum melting room, is provided with crushing device and chilling roll in alloy sheet cooling chamber；Storage appts. is connected by guide valve with alloy sheet cooling chamber.The manufacturing method of rapid hardening alloy can be used for manufacturing sintered NdFeB rapid hardening alloy, fast quenching NdFeB permanet magnetic powder, Sol-Gel magnetic powder, it may also be used for manufacture Nd-Fe-B permanent magnet using neodymium iron boron waste material.
Description
Technical field
The invention belongs to Advanced Equipment fields, more particularly to the manufacture of a kind of vacuum melting rapid hardening equipment and rapid hardening alloy
Method；Equipment and rapid hardening alloy manufacturing methods of the invention can be used for manufacturing rare earth permanent magnet rapid hardening alloy, fast quenching neodymium iron boron forever
The soft Ci powder of magnetic powder, metal, vacuum rapid hardening alloy etc..
Background technique
Rare earth permanent-magnetic material is more and more applied with the magnetic property that its is excellent, is widely used in the nuclear-magnetism of medical treatment
Resonance image-forming, computer hard disc driver, sound equipment, mobile phone etc.；With the requirement of energy conservation and low-carbon economy, Nd-Fe-B rare-earth permanent magnet
Material starts to answer in auto parts and components, household electrical appliance, energy conservation and control motor, hybrid vehicle, field of wind power generation again
With.
Nineteen eighty-three, Japan Patent 1,622,492 and 2,137,496 disclose Nd-Fe-B rare earth permanent magnetic material first, announce
The characteristic of Nd-Fe-B rare earth permanent magnetic material, ingredient and manufacturing method, United States Patent (USP) US6,461,565, US6,491,765,
US6,537,385, US6,527,874, US5,645,651 also disclose the manufacturing method of Nd-Fe-B rare-earth permanent magnet.
There are two types of the production method of RE permanent magnetic alloy used in manufacture Nd-Fe-B rare earth permanent magnetic material is general, one is
Alloy molten solution is injected in mold, then by the way that the ingot mould casting of alloy pig is made compared with Slow cooling.One is melt alloy
Liquid is cast on the chill roll of rotation, and the rapid hardening method of rapid hardening alloy thin band or thin slice is formed after chilling.Due to the crystalline substance of rapid hardening alloy
Grain more fine uniform, and Nd-rich phase distribution is good, currently manufactured high performance rare earth permanent-magnetic material is generally used rapid hardening method
To prepare RE permanent magnetic alloy.
United States Patent (USP) US7,585,378 and Chinese patent CN97,217,372.2, CN01,241,237.6 disclose dilute
The manufacturing method of native permanent magnet vacuum rapid hardening alloy, neodymium iron boron raw material are cast to tundish after crucible melting, overflow from tundish
Aluminium alloy alloy sheet is formed by the cooling rapid hardening of chill roll.
But in the existing above-mentioned vacuum melting strip casting for rare earth permanent-magnetic material manufacture, usually by pure iron, boron
The rapid hardenings alloy raw materials such as iron, rare earths material and other addition metals using disposably enter crucible carry out melting by the way of, this
Sample in fusion process it is possible that the more expensive raw material such as rare earth at high temperature volatilization loss the phenomenon that；In addition, big
Raw material is put into crucible in compression ring border, can also rare earth material be made to aoxidize, increases the slag making in melting.Above-mentioned factor influences
The utilization rate of precious metal material, causes a degree of waste.Japanese Ai Fake Co., Ltd. vacuum melting produced
Rapid hardening furnace, it is molten its purpose is to be filled in crucible internal cause raw material in fusion process although using the design of secondary charging
The stocking space changed and occurred achievees the effect that increase batch, and unresolved precious alloy raw material loses at high temperature
And the problem that rare earths material melting slag making is serious.
On the other hand, recycling benefit is being researched and developed always since the material cost of rare earth permanent-magnetic material is higher, in industry
With the method for the rare earth permanent magnet spent materials such as rare earth permanent magnet substandard products and leftover pieces, to reduce the cost of raw material of rare earth permanent-magnetic material,
Save existing natural resources.Since the degree of oxidation in above-mentioned rare earth permanent magnet spent material is higher, if using these waste materials as molten
Refine raw material remelting utilize, can a large amount of slag is generated in fusion process, this problem make remelting waste material technique receive limitation and
It can not be widely applied.Therefore, Japanese relevant enterprise generallys use the process of non-remelting to recycle rare earth permanent magnet spent material.
For example, ZL99800997.0 and US6,149,861 disclose a kind of method for recycling sintered NdFeB waste material, in this side
In method, waste material is crushed, pickling and drying, calcium reduction processing then is carried out to this product, thus to obtain recycling
Raw material alloy powder, then it is adjusted by adding other alloy powders into this powder at being grouped as, and then is manufactured and burnt
Tie Nd-Fe-B permanent magnet material.ZL02800504.X and US7,056,393 discloses a kind of method using sintered NdFeB substandard products,
In the method, coarse crushing is carried out to sintered NdFeB substandard products using hydrogen decrepitation, fine powder is then made, it then will be by substandard products
After manufactured fine powder is mixed with fine powder made of normal raw material, sintered Nd-Fe-B permanent magnet is made.Above-mentioned non-remelting benefit
With the method for waste material, not only process is more complicated, it is also necessary to which the alloy powder for preparing heterogeneity deploys its ingredient and improves its burning
Knot ability, makes troubles to production process.Prior thing, the waste material is using in method, due to non-remelting, powder made of waste material
Oxygen and other impurity contents are higher in end, are severely impacted the magnetic property of thus manufactured rare earth permanent-magnetic material.
Summary of the invention
The invention is realized by the following technical scheme:
A kind of vacuum melting rapid hardening equipment, vacuum melting rapid hardening equipment include vacuum charging room, vacuum melting room, rotating roller
Mobile room, alloy sheet cooling chamber, Storage appts.；The top of vacuum melting room is arranged in vacuum charging room, in vacuum charging room
It is provided with charging basket and charging basket elevating mechanism, vacuum charging room is connected by vacuum valve with vacuum melting room；In vacuum melting room
It is provided with vacuum melting crucible and turnover mechanism, vacuum melting crucible is mounted on turnover mechanism, the overturning of vacuum melting crucible
Angle is greater than 90 degree；The mobile room of rotating roller is connected by vacuum separation valve door with vacuum melting room, the mobile indoor setting of rotating roller
There is water cooling rotating roller arrangement, water cooling rotating roller arrangement can be moved to vacuum melting room；The setting of alloy sheet cooling chamber is molten in vacuum
The lower section of room is refined, alloy sheet cooling chamber is connected with vacuum melting room, is provided with crushing device and cooling in alloy sheet cooling chamber
Roller；The lower section of alloy sheet cooling chamber is arranged in Storage appts., and material-storage jar is provided in Storage appts., and Storage appts. passes through guide
Valve is connected with alloy sheet cooling chamber.
It is additionally provided with rotatable station dial in the vacuum charging room, station dial setting is can be reciprocal
On mobile trolley.
Turntable is additionally provided in the vacuum charging room, turntable is arranged on the car, the guide rail and vacuum charging of trolley
The door of room is connected, and turntable is moved together with door.
The vacuum melting room is horizontal type structure, is provided with furnace body, front door and back door, turnover mechanism and vacuum melting room
Back door be connected, back door is connected by door opener with the furnace body of vacuum melting room, is provided on door opener for before back door
The hydraulic cylinder moved afterwards and back door surround the hydraulic cylinder of door opener shaft rotation；The back door has 2, alternation switch.
In another embodiment, the vacuum melting room is horizontal type structure, is provided with furnace body, front door and back door,
Turnover mechanism is connected with the back door of vacuum melting room, and back door is connected by door opener with the furnace body of vacuum melting room, and open the door dress
Set the hydraulic cylinder for being provided with and surrounding the rotation of door opener shaft for back door；The back door has 2, alternation switch.
The water cooling rotating roller arrangement include tundish, water cooling rotating roller, bearing, bearing block, device for sealing magnetic fluid,
Rotating roller transport mechanism；Tundish is connected with bearing block, and bearing block is supported in rotating roller transport mechanism；The two of water cooling rotating roller
There is axis at end, through the bearing support in bearing block on bearing block；Bearing block is connected with device for sealing magnetic fluid, water cooling rotating roller
Cooling water introduce water cooling rotating roller from the device for sealing magnetic fluid of one end, from the device for sealing magnetic fluid of the other end draw；
Moving guide rail is provided with below rotating roller transport mechanism, water cooling rotating roller arrangement moves along guide rail can be mobile in rotating roller
It moves and pauses between room and vacuum melting room；The mobile room of the moving guide rail and rotating roller being arranged below water cooling rotating roller arrangement
Door is connected, and moves together with the door of the mobile room of rotating roller.
The water cooling rotating roller arrangement includes tundish, water cooling rotating roller, bearing block, device for sealing magnetic fluid, rotation
Roller transport mechanism；The diameter of the water cooling rotating roller is within the scope of 590mm to 1220mm, the linear velocity of water cooling rotating roller outer rim
Within the scope of 0.8m/s to 60m/s.
The alloy sheet cooling chamber also includes cooling chamber cylinder, drive end bearing bracket, rear end cap；Be provided on cooling chamber cylinder into
Material mouth and discharge port, feed inlet are connected with vacuum melting room, and discharge port is connected with guide valve, and feed inlet is rectangle, are feeding
Mouth is provided with crushing device；Crushing device includes the shaft of relative rotation；Chilling roll is Double water-cooled wall construction, interior logical cooling
Water, is provided with fin on chilling roll inner wall, and the fin is to be not parallel to the axis of chilling roll to be also not orthogonal to axis,
Chilling roll is rotated in the forward direction or is reversely rotated.There is axis in the rear end of roller, and axis passes through rear end cap, is arranged between axis and rear end cap
There is device for sealing magnetic fluid and cooling water introduces and ejector.
It is provided with spiral helicine fin on the chilling roll inner wall, is also set in the inner space of spiral helicine fin
It is equipped with cylinder, helical form fin is provided on the inner wall of cylinder；In the helical form fin and chilling roll being arranged on cylinder inner wall
The hand of spiral of helical form fin on wall is opposite.
4 station turnplates are additionally provided in the vacuum charging room, charging basket is placed on 4 station turnplates, and 4 station turnplates are set
It sets on the car, the guide rail of trolley is connected with the door of vacuum charging room, and 4 station turnplates are moved together with door.
In another embodiment of the invention, water cooling rotating roller arrangement includes tundish, water cooling rotating roller, water cooling rotation
Cooling water is connected in transfer roller；Water cooling rotating roller arrangement further includes small water cooling rotating roller, and the diameter of small water cooling rotating roller is revolved than water cooling
The diameter of transfer roller is small；The axis of small water cooling rotating roller is parallel with the axis of water cooling rotating roller and is located at the top of the axis of water cooling rotating roller；
The axis and tundish of small water cooling rotating roller are located at the two sides of the axis of water cooling rotating roller；Cooling is connected in small water cooling rotating roller
Water.
Rapid hardening alloy raw material: being first fitted into more than one charging basket by a kind of manufacturing method of rapid hardening alloy, opens vacuum
Vacuum charging room goalkeeper's charging basket of melting rapid hardening equipment is placed on feeding vacuum charging room on station dial, opens after vacuumizing
The vacuum valve being connected with vacuum melting room, under vacuum conditions automatically will material by the indoor charging basket elevating mechanism of vacuum charging
Part rapid hardening alloy raw material in basket is added in the indoor vacuum melting crucible of vacuum melting；It is molten to vacuum under vacuum conditions
Raw material in refining crucible carries out heating fusing；It later again will be in rapid hardening alloy raw material remaining in charging basket or another charging basket
Rapid hardening alloy raw material is added in vacuum melting crucible, continues to heat and be refined into molten alloy under vacuum or protective condition,
Before vacuum melting rapid hardening starts or during vacuum melting rapid hardening, water cooling rotating roller is moved to vacuum melting from the mobile room of rotating roller
Room, later by the aluminium alloy of melting by forming alloy sheet in trough casting to the outer rim of water cooling rotating roller, alloy sheet is left
Fallen under after water cooling rotating roller on the cooling indoor crushing device of alloy sheet, by the broken alloy sheet of crushing device immediately under
It falls in alloy sheet chilling roll and continues to cool down；Alloy sheet imports in the material-storage jar of Storage appts. later.
The rapid hardening alloy raw material comprising pure iron, ferro-boron is first heated to 500 DEG C or more under vacuum conditions, it later again will packet
Rapid hardening alloy raw material containing rare earth, which is added in vacuum melting crucible, to be continued to heat, and is refined later, refining temperature is in 1400-
1470 DEG C, the aluminium alloy of melting is passed through into trough casting to the water that vacuum melting room is moved to from the mobile room of rotating roller after refining
Alloy sheet is formed in the outer rim of cold rotating roller.
The content of impurity element Mn controls the average thickness of alloy sheet in the range of 60-390ppm in the alloy sheet
Degree is within the scope of 0.16mm to 0.39mm, and from the section of alloy sheet thickness, the average distance between crystal boundary is in 3-8 μm of model
It encloses；Sintered rare-earth permanent magnetic body, institute is made by hydrogen breaking, airflow milling powder, pressing under magnetic field, sintering and timeliness in the alloy sheet
In 3-9 μ m, the content of impurity element Mn is controlled in 60-390ppm the average grain size for the sintered rare-earth permanent magnetic body stated
In the range of.
The manufacturing method of a kind of rapid hardening alloy, comprising: under vacuum conditions will include pure iron, ferro-boron, neodymium iron boron
A part of rapid hardening alloy raw material of waste material is sent into the crucible of vacuum melting room, is heated to 1400-1500 DEG C of range of temperature and refines；
Recycle the lifting device of the vacuum charging room of vacuum melting rapid hardening equipment that neodymium iron boron slag cleaning plant is sent to vacuum melting
The surface of the crucible melt of room, allows slag to be adsorbed on slag cleaning plant, later lifts slag cleaning plant；Then again will
Another part rapid hardening alloy raw material is added in the indoor crucible of vacuum melting, is filled with argon gas and refining later；It is molten after refining
Liquid is by forming alloy sheet in trough casting to the outer rim of water cooling rotating roller；The alloy sheet for leaving water cooling rotating roller is fallen on immediately
On the crushing device of alloy sheet cooling chamber, the chilling roll rotated is slid by broken alloy sheet, with chilling roll
Rotation, alloy sheet further cools down；Chilling roll is overturn, alloy sheet enters material-storage jar；The outer rim of the water cooling rotating roller
Linear velocity within the scope of 1.3m/s to 3.5m/s, model of the content of impurity element Mn in 61-158ppm in the alloy sheet
In enclosing, the average thickness of alloy sheet is within the scope of 0.16mm to 0.29mm, from the section of alloy sheet, being averaged between crystal boundary
Distance is in 3-6 μ m；Burning is made by hydrogen breaking, airflow milling powder, pressing under magnetic field, sintering and timeliness in the alloy sheet
Rare-earth permanent magnet is tied, the average grain size of the sintered rare-earth permanent magnetic body is in 3-6 μ m, the content of impurity element Mn
In the range of 61-158ppm.
The linear velocity of the outer rim of the water cooling rotating roller is within the scope of 0.8m/s to 3.5m/s, the average thickness of alloy sheet
Within the scope of 0.1mm to 0.5mm.
For the linear velocity of the outer rim of the water cooling rotating roller within the scope of 5m/s to 28m/s, the average thickness of alloy sheet is small
In 0.1mm, the microstructure of alloy sheet is crystallite.
For the linear velocity of the outer rim of the water cooling rotating roller within the scope of 28m/s to 60m/s, the average thickness of alloy sheet is small
In 0.06mm, the microstructure of alloy sheet is crystallite or amorphous.
The rapid hardening alloy raw material contains the rare earth element of 28-33wt%, the linear speed of the outer rim of the water cooling rotating roller
Degree is within the scope of 1.2m/s to 3.5m/s, and the average thickness of alloy sheet is within the scope of 0.1mm to 0.4mm；Later by alloy sheet into
Sintered NdFeB rear-earth permanent magnet is made in row hydrogen breaking, airflow milling powder, pressing under magnetic field, sintering and timeliness, and the sintering is dilute
The average grain size of native permanent magnet is in 3-8 μ m；The average grain size of further sintered Nd-Fe-B permanent magnet is at 3-8 μm
Range.
The rapid hardening alloy raw material contains the rare earth element of 14-29wt%, the linear speed of the outer rim of the water cooling rotating roller
For degree within the scope of 14m/s to 40m/s, the thickness of alloy sheet is less than 0.05mm；Alloy sheet is crushed to the above granularity of 40 mesh later,
Then it carries out 500-600 DEG C of heat treatment and fast quenching NdFeB permanet magnetic powder is made, the fast quenching NdFeB permanet magnetic powder has crystallite
Or non crystalline structure.
The rapid hardening alloy raw material contains Fe element, the linear velocity of the outer rim of the water cooling rotating roller 40m/s extremely
Within the scope of 60m/s, the thickness of alloy sheet is less than 0.03mm；Alloy sheet is crushed later, soft magnetism rapidly quenched magnetic powder is made.
In alloy sheet cooling procedure, the alloy sheet chilling roll is rotated in the forward direction, cooling from alloy sheet in alloy sheet
In roller export process, alloy sheet chilling roll is reversely rotated.
In another embodiment of the invention, the water cooling rotating roller upper side is additionally provided with small water cooling rotation
The axis of roller, small water cooling rotating roller is parallel with the axis of water cooling rotating roller and is located at the top of water cooling rotatable roll shaft；The aluminium alloy of melting
Alloy sheet is formed to from the outer rim that rotating roller moves the water cooling rotating roller that room is moved to vacuum melting room by trough casting,
Alloy sheet then passes through the gap between water cooling rotating roller outer rim and small water cooling rotating roller outer rim, and small water cooling rotating roller is to alloy sheet
It is cooled down again, forms the alloy sheet of two-sided cooling；Alloy sheet, which leaves, later falls on alloy sheet cooling chamber under water cooling rotating roller
On interior crushing device；Gap between water cooling rotating roller outer rim and small water cooling rotating roller outer rim is within the scope of 0.1-0.6mm.
Compared with prior art, beneficial effects of the present invention:
1. before vacuum melting rapid hardening starts or during vacuum melting rapid hardening, water cooling rotating roller can be mobile from rotating roller
Room is moved to vacuum melting room, and this design and method may be implemented continuous vacuum melting rapid hardening process, reduce operator
Member's quantity reduces labor intensity and is obviously improved operating environment, it is often more important that, be conducive to the property for improving rare earth permanent-magnetic material
Energy and its consistency.
2. under vacuum conditions once vacuumizing raw material, crucible is added in multiple timesharing, has both avoided valuable raw material
Vaporization at high temperature, and improve batch.
3. raw material is packed into crucible under vacuum conditions, the oxidative slagging in fusion process is reduced, noble metal material is improved
The utilization rate of material especially rare earth material.
4. melting kettle is connected with back door, clears up and repair convenient for crucible, reduces labor intensity, it is convenient and safe.
5. water cooling rotating roller is supported using both-end, running accuracy is improved, the consistent of the alloy sheet thickness of production is improved
Property, hence it is evident that improve properties of product；The sealing of the cooling water at water cooling rotating roller both ends uses magnet fluid sealing, improves vacuum
Under the conditions of sealing reliability.Once otherwise leak will cause the oxidation of alloy.
6. being provided with fin in alloy sheet chilling roll, alloy sheet chilling roll, which can rotate in the forward direction, to be reversely rotated,
In alloy sheet casting and cooling procedure, the alloy sheet chilling roll is rotated in the forward direction, and is rolled in alloy sheet from alloy sheet is cooling
In cylinder export process, alloy sheet chilling roll is reversely rotated；Alloy sheet is cooling, and sufficiently the temperature that alloy sheet enters material-storage jar is low,
Alloy sheet when discharging is avoided to aoxidize.
Detailed description of the invention
Fig. 1 is the main view of one of present invention vacuum melting rapid hardening equipment；
Fig. 2 is the side view of one of present invention vacuum melting rapid hardening equipment；
Fig. 3 is the top view of one of present invention vacuum melting rapid hardening equipment；
Fig. 4 is the structural schematic diagram of another alloy sheet chilling roll of the invention；
Fig. 5 is the main view of another vacuum melting rapid hardening equipment of the invention.
Specific embodiment
As shown in Figs 1-4, the vacuum melting rapid hardening equipment includes vacuum charging room 5, vacuum melting room 8, rotating roller
Mobile room 35, alloy sheet cooling chamber 15, Storage appts. 21；The top of vacuum melting room 8 is arranged in the vacuum charging room 5,
5 are provided with charging basket 4, charging basket elevating mechanism 6, station dial 3, the trolley 2 moved back and forth in vacuum charging room；Multistation turns
Disk 3 is arranged on the trolley 2 that can be moved back and forth, and the guide rail of trolley 2 is connected with the door 1 of vacuum charging room, station dial 3 with
Door 1 moves together；Vacuum charging room 5 is connected by vacuum valve 7 with vacuum melting room 8；The vacuum melting room 8 is provided with
Furnace body 10, front door 26 and back door 11 are provided with guide cover 25 on front door 26, vacuum melting crucible 9 are provided in vacuum melting room 8
With turnover mechanism 12, vacuum melting crucible 9 is mounted on turnover mechanism 12, and the flip angle of vacuum melting crucible 9 is greater than 90 degree,
Turnover mechanism 12 is connected with the back door 11 of vacuum melting room 8, and back door 11 passes through the furnace body 10 of door opener 45 and vacuum melting room 8
It is connected, is provided on door opener 45 for the hydraulic cylinder 47 of back door back-and-forth motion and back door around the rotation of door opener shaft
Hydraulic cylinder 46；There are two back doors 11, equally has on the door opener 53 at second back door 50 for the hydraulic of back door back-and-forth motion
Cylinder 51 and back door surround the hydraulic cylinder 52 of door opener shaft rotation；Second back door 50 is connected with turnover mechanism 49 and installation
Vacuum melting crucible 48 on turnover mechanism 49, two back door alternation switches；It is additionally provided on the furnace body 10 of vacuum melting room 8
Temperature measuring equipment 37 smashes material device 38 and observation window 39；The mobile room 35 of rotating roller passes through vacuum separation valve door 36 and vacuum melting room 8
It is connected, rotating roller is provided with water cooling rotating roller arrangement 29 in mobile room 35, and water cooling rotating roller arrangement 29 passes through rotating roller conveyer
The driving of structure 41 is moved between the mobile room 35 of rotating roller and vacuum melting room 8；The water cooling rotating roller arrangement 29 includes centre
Packet 34, water cooling rotating roller 28, bearing 31, bearing block 32, device for sealing magnetic fluid 30, rotating roller rotating device 33, rotating roller pass
Send mechanism 41；Tundish 34 is connected with bearing block 32, and bearing block 32 is supported in rotating roller transport mechanism 41；Water cooling rotating roller 28
Both ends have axis, by bearing 31 support on bearing blocks 32；Bearing block 32 is connected with device for sealing magnetic fluid 30, water cooling rotation
Cooling water in roller 28 is introduced from the device for sealing magnetic fluid 30 of one end, is drawn from the device for sealing magnetic fluid 30 of the other end；Rotation
The lower section of transfer roller transport mechanism 41 is provided with moving guide rail 40, and water cooling rotating roller arrangement 29 moves along guide rail 40 and moves in rotating roller
It moves and pauses between dynamic room 35 and vacuum melting room 8；Moving guide rail 40 is connected with the mobile room door 27 of rotating roller, moves in rotating roller
It is moved together under the drive of dynamic room door drive 42 with door 27；The lower section of vacuum melting room 8 is arranged in alloy sheet cooling chamber 15,
Alloy sheet cooling chamber 15 is connected with the furnace body 10 of vacuum melting room 8, the alloy sheet cooling chamber 15 include cooling chamber cylinder 13,
Drive end bearing bracket 22, rear end cap 16, alloy sheet crushing device 24, alloy sheet chilling roll 14；Charging is provided on cooling chamber cylinder 13
Mouth and discharge port, feed inlet are connected with vacuum melting room 8, and discharge port is connected with guide valve 20, and feed inlet is rectangle, is feeding
Mouth is provided with alloy sheet crushing device 24；Alloy sheet chilling roll 14 is Double water-cooled wall construction, interior logical cooling water, in roller 14
Fin 23 is provided on wall, the fin had both been not parallel to the axis of alloy sheet chilling roll 14 or had been not orthogonal to axis, closed
Gold plaque chilling roll 14 rotates in the forward direction or reversely rotates rolling；The rear end of cylinder is provided with transmission shaft 19, and transmission shaft 19 passes through
Rear end cap 16 is provided with device for sealing magnetic fluid 17 between transmission shaft and rear end cap 16 and cooling water introduces and ejector
18；Shown in Fig. 4 is the structure of another alloy sheet chilling roll, is provided with spiral on the alloy sheet chilling roll inner wall
The fin 56 of shape is additionally provided with cylinder 57 in the inner space of spiral helicine fin, is provided with helical form on the inner wall of cylinder
Fin 58, the spiral side for the helical form fin on helical form fin and alloy sheet chilling roll inner wall being arranged on the inner wall of cylinder
To opposite；The lower section of alloy sheet cooling chamber 15 is arranged in the Storage appts. 21, is provided with material-storage jar in Storage appts. 21, storage
Material device 21 is connected by guide valve with alloy sheet cooling chamber 15；Equipment of the invention also includes cooling water system 54, takes out very
Empty unit 55, upper mounting plate 43 and lower platform 44.
Fig. 5 is the structural schematic diagram of another vacuum melting rapid hardening equipment of the invention.In this embodiment, water cooling
Rotating roller arrangement 29 includes tundish 34, water cooling rotating roller 28, is connected with cooling water in water cooling rotating roller 28；Water cooling rotating roller arrangement
29 further include small water cooling rotating roller 59, and the diameter of small water cooling rotating roller 59 is smaller than the diameter of water cooling rotating roller 28；Small water cooling rotation
The axis of roller 59 is parallel with the axis of water cooling rotating roller 28 and is located at the top of the axis of water cooling rotating roller 28；The axis of small water cooling rotating roller 59
The two sides of the axis of water cooling rotating roller 28 are located at tundish 34；Cooling water is connected in small water cooling rotating roller 59.
Remarkable result of the invention is further illustrated below by the comparison of embodiment.
Embodiment 1
Praseodymium neodymium alloy, terbium metal, dysprosium iron, pure iron, ferro-boron, gallium, metal zirconium, metallic cobalt, metallic aluminium, metallic copper is former
Material is configured to Pr by weight percentage6.3Nd23.1Dy2Tb0.6B0.95Co1.2Zr0.12Ga0.1Al0.2Cu0.2FeSurplusAlloy raw material, will
Pure iron and ferro-boron are packed into No. 1 charging basket, and pure iron, ferro-boron and a small amount of praseodymium neodymium alloy are packed into No. 2 charging baskets, by praseodymium neodymium alloy, dysprosium iron,
Terbium metal, gallium are packed into No. 3 charging baskets, metal zirconium, metallic cobalt, metallic aluminium, metallic copper are packed into No. 4 charging baskets, later operation packet
It includes: 4 charging baskets (1) is sent into the vacuum charging room of vacuum melting rapid hardening equipment, vacuum charging room and vacuum are opened after vacuumizing
Vacuum valve between working chamber；(2) by the cooperation of the trolley of lifting device, 4 station turnplates and reciprocating movement by No. 1 and No. 2
The crucible of vacuum melting room is added in the raw material of charging basket under vacuum conditions, is heated to 300-1500 DEG C of range of temperature；(3) with aforementioned
Method the raw material of No. 3 charging baskets and No. 4 charging baskets is also added to the crucible of vacuum melting room, be filled with argon gas and refining later；(4) will
The mobile indoor water cooling rotating roller arrangement of rotating roller is transmitted to vacuum melting room, and the crucible that fascinates will be under molten condition by tundish
Melt be cast in the outer rim of water cooling rotating roller and form alloy sheet；(5) alloy sheet for leaving water cooling rotating roller falls on conjunction immediately
On the alloy sheet crushing device of gold plaque cooling chamber, the alloy sheet chilling roll rotated, (6) are slid by broken alloy sheet
With the rotation of alloy sheet chilling roll, alloy sheet enters material-storage jar, after closing guide valve later and closing the lid to material-storage jar
Material-storage jar is removed and completes operation；The performance of alloy sheet is as shown in table 1 after tested；(7) by alloy sheet progress hydrogen, broken, air-flow is ground
Nd-Fe-B permanent magnet is made in powder, pressing under magnetic field and sintering, and through detecting, Nd-Fe-B permanent magnetic ferrum property is as shown in table 2；By Tables 1 and 2
It can be seen that equipment and manufacturing method of the invention can produce high-performance Ne-Fe-B rapid hardening alloy and permanent magnet.
The performance of 1. Nd Fe B alloys piece of table
The performance of 2. Nd-Fe-B permanent magnet of table
Embodiment 2
Praseodymium neodymium alloy, terbium metal, dysprosium iron, pure iron, ferro-boron, gallium, metal zirconium, metallic cobalt, metallic aluminium, metal will be contained
The raw material and neodymium iron boron waste material of copper are configured to Pr by weight percentage6.3Nd23.1Dy2Tb0.6B0.95Co1.2Zr0.12Ga0.1Al0.2
Cu0.2FeSurplusAlloy raw material, wherein neodymium iron boron waste material content accounts for the 10-60% of total weight；Pure iron and ferro-boron are packed into No. 1 material
Basket, is packed into No. 2 charging baskets for neodymium iron boron waste material, neodymium iron boron slag cleaning plant is packed into No. 3 charging baskets, by praseodymium neodymium alloy, dysprosium iron, gold
Belong to terbium, gallium, metal zirconium, metallic cobalt, metallic aluminium, metallic copper and be packed into No. 4 charging baskets, operating procedure includes: (1) by charging basket later
It is sent into the vacuum charging room of vacuum melting rapid hardening equipment, the vacuum valve between vacuum charging room and vacuum melting room is opened after vacuumizing
Door；(2) by the cooperation of the trolley of lifting device, 4 station turnplates and reciprocating movement by the raw material of No. 1 and No. 2 charging basket in vacuum
Under the conditions of be added vacuum melting room crucible, be heated to 1400-1500 DEG C of range of temperature and refine；(3) with method above-mentioned by 3
The slag cleaning plant of number charging basket drops to the surface of the crucible melt of vacuum melting room, and slag is allowed to be adsorbed onto slag cleaning plant
On, slag cleaning plant is lifted later, in income to No. 3 charging baskets, is continued to lift up with No. 3 charging baskets, then is put back into 4 stations and turns
Disk；(4) raw material of No. 4 charging baskets is also added to the crucible of vacuum melting room with the method for operating procedure (2), be filled with later argon gas and
Refining；(5) the mobile indoor water cooling rotating roller arrangement of rotating roller is transmitted to vacuum melting room, the crucible that fascinates will by tundish
Melt under molten condition is cast in the outer rim of water cooling rotating roller and forms alloy sheet；(6) alloy sheet of water cooling rotating roller is left
It is fallen on the alloy sheet crushing device of alloy sheet cooling chamber immediately, it is cold to slide into the alloy sheet rotated by broken alloy sheet
But roller, (7) with the rotation of alloy sheet chilling roll, alloy sheet enters material-storage jar, closes guide valve later and to bin stock
Material-storage jar is removed after cover upper cover and completes operation；The performance of alloy sheet is as shown in table 3 after tested；(8) alloy sheet is subjected to hydrogen
Nd-Fe-B permanent magnet is made in broken, airflow milling powder, pressing under magnetic field and sintering, through detecting, Nd-Fe-B permanent magnetic ferrum property such as 4 institute of table
Show；By table 3 and table 4 it can be seen that equipment and manufacturing method of the invention can produce high-performance Ne-Fe-B speed with neodymium iron boron waste material
Solidifying alloy and permanent magnet.
The performance of 3. Nd Fe B alloys piece of table
The performance of 4. Nd-Fe-B permanent magnet of table
Embodiment 3
Raw material containing rare earth alloy, pure iron, ferro-boron, metal zirconium is configured to alloy shown in table 6 by weight percentage,
Pure iron and ferro-boron are packed into No. 1 and No. 2 charging baskets, rare earth alloy is packed into No. 3 charging baskets, metal zirconium is packed into No. 4 charging baskets, Zhi Houcao
Work includes: the vacuum charging room that charging basket is sent into vacuum melting rapid hardening equipment by (1), and vacuum charging room and vacuum are opened after vacuumizing
Vacuum valve between working chamber；(2) by the cooperation of the trolley of lifting device, 4 station turnplates and reciprocating movement by No. 1 and No. 2
The crucible of vacuum melting room is added in the raw material of charging basket under vacuum conditions, is heated to 600-1500 DEG C of range of temperature；(3) with aforementioned
Method the raw material of No. 3 charging baskets and No. 4 charging baskets is also added to the crucible of vacuum melting room, be filled with argon gas and refining later；(4) will
The mobile indoor water cooling rotating roller arrangement of rotating roller is transmitted to vacuum melting room, and the crucible that fascinates will be under molten condition by tundish
Melt be cast in the outer rim of water cooling rotating roller and form alloy sheet；(5) alloy sheet for leaving water cooling rotating roller falls on conjunction immediately
On the alloy sheet crushing device of gold plaque cooling chamber, the alloy sheet chilling roll rotated, (6) are slid by broken alloy sheet
With the rotation of alloy sheet chilling roll, alloy sheet enters material-storage jar, after closing guide valve later and closing the lid to material-storage jar
Material-storage jar is removed and completes operation；The performance of alloy sheet is as shown in table 5 after tested；(7) alloy sheet is passed through into Crystallizing treatment, through examining
It surveys, fast quenching NdFeB permanet magnetic powder performance is as shown in table 6；By table 5 and table 6 it can be seen that equipment and manufacturing method of the invention can be with
Produce high-performance fast quenching NdFeB permanet magnetic powder.
The performance of 5. fast quenching Nd Fe B alloys piece of table
The performance of 6. fast quenching NdFeB magnetic powder of table
Embodiment 4
Pure iron, ferro-boron, ferrosilicon, ferro-niobium, metal copper raw material are configured to Fe by weight percentage78.4Cu0.6Nb2.5Si9.5B9
Alloy, by pure iron as raw material, ferro-boron, ferrosilicon, be packed into No. 1 to No. 3 charging basket, by raw material ferro-niobium, metallic copper be packed into No. 4 charging baskets, it
The vacuum charging room of operation to include: (1) be sent into charging basket vacuum melting rapid hardening equipment afterwards, opened after vacuumizing vacuum charging room and
Vacuum valve between vacuum melting room；(2) by the cooperation of the trolley of lifting device, 4 station turnplates and reciprocating movement by No. 1 extremely
The crucible of vacuum melting room and heating is added in the raw material of No. 3 charging baskets under vacuum conditions；(3) with method above-mentioned by No. 4 charging baskets
Raw material the crucible of vacuum melting room is also added, refined later；(4) by the mobile indoor water cooling rotating roller arrangement of rotating roller
It is transmitted to vacuum melting room, the melt under molten condition is cast in the outer rim of water cooling rotating roller by the crucible that fascinates by tundish
Form alloy sheet；(5) alloy sheet for leaving water cooling rotating roller is fallen on immediately on the alloy sheet crushing device of alloy sheet cooling chamber, warp
It crosses broken alloy sheet and slides into the alloy sheet chilling roll rotated, the rotation of (6) with alloy sheet chilling roll, alloy sheet
Into material-storage jar, guide valve is closed later and removes material-storage jar after closing the lid to material-storage jar and completes operation；Alloy after tested
The performance of piece is as shown in table 7；(7) alloy sheet is passed through into Crystallizing treatment, through detecting, metal soft magnetic powder performance is as shown in table 8；By table
7 and table 8 it can be seen that equipment and manufacturing method of the invention can produce high-performance metal soft magnet powder.
The performance of 7. metal soft magnetic alloy piece of table
The performance of 8. metal soft magnetic powder of table
Claims (20)
1. a kind of vacuum melting rapid hardening equipment, it is characterised in that: vacuum melting rapid hardening equipment includes vacuum charging room, vacuum melting
Room, rotating roller mobile room, alloy sheet cooling chamber, Storage appts.；The top of vacuum melting room is arranged in vacuum charging room, in vacuum
Charging basket and charging basket elevating mechanism are provided in feed compartment, vacuum charging room is connected by vacuum valve with vacuum melting room；Vacuum
Vacuum melting crucible and turnover mechanism are provided in working chamber, vacuum melting crucible is mounted on turnover mechanism, vacuum melting earthenware
The flip angle of crucible is greater than 90 degree；The mobile room of rotating roller is connected by vacuum separation valve door with vacuum melting room, and rotating roller is mobile
Interior is provided with water cooling rotating roller arrangement, and water cooling rotating roller arrangement can be moved to vacuum melting room；The setting of alloy sheet cooling chamber
In the lower section of vacuum melting room, alloy sheet cooling chamber is connected with vacuum melting room, and broken dress is provided in alloy sheet cooling chamber
It sets and chilling roll；The lower section of alloy sheet cooling chamber is arranged in Storage appts., and material-storage jar, Storage appts. are provided in Storage appts.
It is connected by guide valve with alloy sheet cooling chamber.
2. vacuum melting rapid hardening equipment according to claim 1, it is characterised in that: also set up in the vacuum charging room
There is rotatable station dial.
3. vacuum melting rapid hardening equipment according to claim 1, it is characterised in that: also set up in the vacuum charging room
There is turntable, turntable is arranged on the car, and the guide rail of trolley is connected with the door of vacuum charging room.
4. vacuum melting rapid hardening equipment according to claim 1, it is characterised in that: the vacuum melting room is horizontal knot
Structure is provided with furnace body, front door and back door, and the turnover mechanism is connected with the back door of vacuum melting room, and back door passes through the dress that opens the door
It sets and is connected with the furnace body of vacuum melting room, be provided on door opener for back door around the hydraulic of door opener shaft rotation
Cylinder；The back door has 2, alternation switch.
5. vacuum melting rapid hardening equipment according to claim 1, it is characterised in that: the vacuum melting room is horizontal knot
Structure is provided with furnace body, front door and back door, and the turnover mechanism is connected with the back door of vacuum melting room, and back door passes through the dress that opens the door
It sets and is connected with the furnace body of vacuum melting room, be provided with to surround for the hydraulic cylinder of back door back-and-forth motion and back door on door opener and open
The hydraulic cylinder of door gear shaft rotation；The back door has 2, alternation switch.
6. vacuum melting rapid hardening equipment according to claim 1, it is characterised in that: water cooling rotating roller arrangement includes centre
Packet, water cooling rotating roller, bearing, bearing block, device for sealing magnetic fluid, rotating roller transport mechanism；Tundish is connected with bearing block, axis
Seat supports are held in rotating roller transport mechanism；There is axis at the both ends of water cooling rotating roller, by the bearing support in bearing block in bearing
On seat；Bearing block is connected with device for sealing magnetic fluid, and the cooling water in water cooling rotating roller draws from the device for sealing magnetic fluid of one end
Enter, is drawn from the device for sealing magnetic fluid of the other end；Moving guide rail, water cooling rotating roller are provided with below rotating roller transport mechanism
Device moves along guide rail and moves and pause between the mobile room of rotating roller and vacuum melting room；It is set below water cooling rotating roller arrangement
The moving guide rail set is connected with the door of the mobile room of rotating roller, moves together with the door of the mobile room of rotating roller.
7. vacuum melting rapid hardening equipment according to claim 1, it is characterised in that: water cooling rotating roller arrangement includes centre
It wraps, water cooling rotating roller, is connected with cooling water in water cooling rotating roller；Water cooling rotating roller arrangement further includes small water cooling rotating roller, small water cooling
The diameter of rotating roller is smaller than the diameter of water cooling rotating roller；The axis of small water cooling rotating roller is parallel with the axis of water cooling rotating roller and is located at water
The top of the axis of cold rotating roller；The axis and tundish of small water cooling rotating roller are located at the two sides of the axis of water cooling rotating roller；Small water
Cooling water is connected in cold rotating roller.
8. vacuum melting rapid hardening equipment according to claim 1, it is characterised in that: the water cooling rotating roller arrangement includes
Tundish, water cooling rotating roller, bearing block, device for sealing magnetic fluid, rotating roller transport mechanism；The diameter of the water cooling rotating roller
Within the scope of 590mm to 1220mm, the linear velocity of water cooling rotating roller outer rim is within the scope of 0.8m/s to 60m/s.
9. vacuum melting rapid hardening equipment according to claim 1, it is characterised in that: the alloy sheet cooling chamber further includes
Cooling chamber cylinder, drive end bearing bracket, rear end cap；Inlet port and outlet port, feed inlet and vacuum melting room are provided on cooling chamber cylinder
It is connected, discharge port is connected with guide valve, and feed inlet is rectangle, and feed inlet is provided with crushing device；Crushing device includes phase
To the shaft of rotation；Chilling roll is Double water-cooled wall construction, and interior logical cooling water is provided with fin on chilling roll inner wall, cold
But roller is rotated in the forward direction or is reversely rotated；There is axis in the rear end of chilling roll, and axis passes through rear end cap, sets between axis and rear end cap
It is equipped with device for sealing magnetic fluid and cooling water introduces and ejector.
10. vacuum melting rapid hardening equipment according to claim 1, it is characterised in that: be provided with spiral shell on chilling roll inner wall
The fin for revolving shape, is additionally provided with cylinder in the inside of chilling roll, helical form fin is also equipped on the inner wall of cylinder；Cylinder
The helical form fin being arranged on inner wall is opposite with the hand of spiral of helical form fin on chilling roll inner wall.
11. vacuum melting rapid hardening equipment according to claim 1, it is characterised in that: also set in the vacuum charging room
Four station turnplates are equipped with, charging basket is placed on four station turnplates, and four station turnplates are arranged on the car, the guide rail and vacuum of trolley
The door of feed compartment is connected, and four station turnplates and the door of vacuum charging room move together.
12. a kind of manufacturing method of rapid hardening alloy, it is characterised in that: rapid hardening alloy raw material is first packed into more than one charging basket
In, the vacuum charging room goalkeeper's charging basket for opening vacuum melting rapid hardening equipment is placed on feeding vacuum charging room on station dial,
The vacuum valve being connected with vacuum melting room is opened after vacuumizing, it automatically will material by the indoor charging basket elevating mechanism of vacuum charging
A part of rapid hardening alloy raw material in basket is added in the indoor vacuum melting crucible of vacuum melting；Under vacuum conditions to vacuum
Raw material in melting kettle carries out heating fusing；Later again by another part rapid hardening alloy raw material or another material in charging basket
Rapid hardening alloy raw material in basket is added in vacuum melting crucible, continues to heat and be refined into melting under vacuum or protective condition
Aluminium alloy, the aluminium alloy of melting is passed through into trough casting to the water for being moved to vacuum melting room from the mobile room of rotating roller later
Form alloy sheet in the outer rim of cold rotating roller, alloy sheet falls on the cooling indoor broken dress of alloy sheet under leaving after water cooling rotating roller
It sets, is fallen on down immediately by the broken alloy sheet of crushing device and continue to cool down in chilling roll；Alloy sheet imports storage later
In the material-storage jar for expecting device.
13. a kind of manufacturing method of rapid hardening alloy according to claim 12, it is characterised in that: first will include pure iron, boron
A part of rapid hardening alloy raw material of iron is heated to 500 DEG C or more under vacuum conditions, later again by another part comprising rare earth
Rapid hardening alloy raw material, which is added in vacuum melting crucible, to be continued to heat, and is refined later, refining temperature at 1400-1470 DEG C,
The aluminium alloy of melting is rotated by trough casting to the water cooling for being moved to vacuum melting room from the mobile room of rotating roller after refining
Alloy sheet is formed in the outer rim of roller, the content of impurity element Mn controls in the range of 60-390ppm in the alloy sheet, closes
Average departure of the average thickness of gold plaque within the scope of 0.16mm to 0.39mm, from the section of alloy sheet thickness, between crystal boundary
From in 3-8 μ m；The alloy sheet by hydrogen breaking, airflow milling powder, pressing under magnetic field, sintering and timeliness be made sintering it is dilute
Native permanent magnet, in 3-9 μ m, the content of impurity element Mn controls the average grain size of the sintered rare-earth permanent magnetic body
In the range of 60-390ppm.
14. a kind of manufacturing method of rapid hardening alloy according to claim 12, it is characterised in that: the water cooling rotating roller
Upper side is additionally provided with small water cooling rotating roller, and the axis of small water cooling rotating roller is parallel with the axis of water cooling rotating roller and is located at water cooling rotation
The top of roll shaft；The aluminium alloy of melting is revolved by trough casting to the water cooling for being moved to vacuum melting room from the mobile room of rotating roller
Alloy sheet is formed in the outer rim of transfer roller, alloy sheet then passes through between water cooling rotating roller outer rim and small water cooling rotating roller outer rim
Gap, small water cooling rotating roller cool down alloy sheet again, form the alloy sheet of two-sided cooling；Alloy sheet leaves water cooling later
It is fallen under rotating roller on the cooling indoor crushing device of alloy sheet；Between water cooling rotating roller outer rim and small water cooling rotating roller outer rim
Gap is within the scope of 0.1-0.6mm.
15. a kind of manufacturing method of rapid hardening alloy according to claim 12, it is characterised in that: under vacuum conditions will packet
A part of rapid hardening alloy raw material containing pure iron, ferro-boron, neodymium iron boron waste material is sent into the crucible of vacuum melting room, is heated to temperature
1400-1500 DEG C of range simultaneously refines；The lifting device of the vacuum charging room of vacuum melting rapid hardening equipment is recycled to melt neodymium iron boron
Slag cleaning device is sent to the surface of the crucible melt of vacuum melting room, and slag is allowed to be adsorbed on slag cleaning plant, will melt later
Slag cleaning device lifts；Then another part rapid hardening alloy raw material is added in the indoor crucible of vacuum melting again, Zhi Houchong
Enter argon gas and refining；Melt after refining is by forming alloy sheet in trough casting to the outer rim of water cooling rotating roller；Leave water
The alloy sheet of cold rotating roller is fallen on immediately on the crushing device of alloy sheet cooling chamber, is being rotated by broken alloy sheet slide-in
Chilling roll, with the rotation of chilling roll, alloy sheet is further cooled down；Chilling roll is overturn, alloy sheet enters material-storage jar；
The linear velocity of the outer rim of the water cooling rotating roller is within the scope of 1.3m/s to 3.5m/s, impurity element Mn in the alloy sheet
Content in the range of 61-158ppm, the average thickness of alloy sheet is within the scope of 0.16mm to 0.29mm, from the disconnected of alloy sheet
It is observed on face, the average distance between crystal boundary is in 3-6 μ m；The alloy sheet is passed through into hydrogen breaking, airflow milling powder, magnetic field
Sintered rare-earth permanent magnetic body is made in molding, sintering and timeliness, and the average grain size of the sintered rare-earth permanent magnetic body is in 3-6 μm of model
In enclosing, the content of impurity element Mn is in the range of 61-158ppm.
16. a kind of manufacturing method of rapid hardening alloy according to claim 12, it is characterised in that: the water cooling rotating roller
Outer rim linear velocity within the scope of 5m/s to 28m/s, the average thickness of alloy sheet is less than 0.1mm, the microstructure of alloy sheet
For crystallite.
17. a kind of manufacturing method of rapid hardening alloy according to claim 12, it is characterised in that: the water cooling rotating roller
Outer rim linear velocity within the scope of 28m/s to 60m/s, the average thickness of alloy sheet is less than 0.06mm, the micro- knot of alloy sheet
Structure is crystallite or amorphous.
18. a kind of manufacturing method of rapid hardening alloy according to claim 12, it is characterised in that: the rapid hardening alloy is former
Expect the rare earth element containing 28-33wt%, the linear velocity of the outer rim of the water cooling rotating roller is in 1.2m/s to 3.5m/s range
Interior, the average thickness of alloy sheet is within the scope of 0.1mm to 0.4mm；Alloy sheet is subjected to hydrogen breaking, airflow milling powder, magnetic later
Sintered rare-earth permanent magnetic body is made in field molding, sintering and timeliness, and the average grain size of the sintered rare-earth permanent magnetic body is at 3-8 μm
Range.
19. a kind of manufacturing method of rapid hardening alloy according to claim 12, it is characterised in that: the rapid hardening alloy is former
Expect the rare earth element containing 14-29wt%, the linear velocity of the outer rim of the water cooling rotating roller within the scope of 14m/s to 40m/s,
The thickness of alloy sheet is less than 0.05mm；Alloy sheet is crushed to the granularity of 40 mesh or more later, then carries out 500-600 DEG C of heat
Fast quenching NdFeB permanet magnetic powder is made in processing, and fast quenching NdFeB permanet magnetic powder has crystallite or non crystalline structure.
20. a kind of manufacturing method of rapid hardening alloy according to claim 12, it is characterised in that: the rapid hardening alloy is former
Material contains Fe element, and the linear velocity of the outer rim of the water cooling rotating roller is within the scope of 40m/s to 60m/s, the thickness of alloy sheet
Less than 0.03mm；Alloy sheet is crushed later, soft magnetism rapidly quenched magnetic powder is made.
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| 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 |
| CN108580819B (en) * | 2018-05-05 | 2021-05-11 | 沈阳中北真空技术有限公司 | Vacuum induction melting cast sheet furnace, alloy cast sheet manufacturing method and alloy cast sheet |
| CN108759471B (en) * | 2018-05-05 | 2019-08-13 | 沈阳中北真空技术有限公司 | Continuous vacuum induction melting slab furnace, alloy casting piece manufacturing method and alloy casting piece |
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| CN111360216A (en) * | 2020-04-10 | 2020-07-03 | 中磁科技股份有限公司 | Neodymium iron boron permanent magnet material smelting system |
| CN112008053B (en) * | 2020-08-27 | 2021-09-17 | 燕山大学 | Preparation device of alloy and current application method |
| CN112626360B (en) * | 2020-12-31 | 2023-12-01 | 沈阳中北真空设备有限公司 | Intelligent vacuum melting rapid hardening equipment and rapid hardening alloy manufacturing method |
| CN113718079B (en) * | 2021-08-25 | 2023-03-14 | 镇江东丰特殊合金有限公司 | Inoculant making equipment |
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