CN106964778A - The method and apparatus for producing heat distortion magnet - Google Patents
The method and apparatus for producing heat distortion magnet Download PDFInfo
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- CN106964778A CN106964778A CN201610022630.8A CN201610022630A CN106964778A CN 106964778 A CN106964778 A CN 106964778A CN 201610022630 A CN201610022630 A CN 201610022630A CN 106964778 A CN106964778 A CN 106964778A
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- preform
- inner chamber
- hot
- extrusion head
- shaped inner
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000001125 extrusion Methods 0.000 claims abstract description 47
- 238000007731 hot pressing Methods 0.000 claims abstract description 44
- 239000000843 powder Substances 0.000 claims abstract description 36
- 238000007599 discharging Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000002791 soaking Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000000956 alloy Substances 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 230000005291 magnetic effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 4
- 238000005496 tempering Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000000280 densification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000007578 melt-quenching technique Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000000707 boryl group Chemical group B* 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- 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
- H01F1/0555—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 pressed, sintered or bonded together
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
The present invention relates to the method and apparatus of production heat distortion magnet, wherein in hot pressing, implementing hot pressing to obtain preform to quenched powder；In thermal deformation process, implement thermal deformation to the preform to obtain heat distortion magnet, wherein using extrusion head by the preform via discharging opening with the direct of travel of extrusion head and the mode extrusion molding in opposite direction of discharging.
Description
Technical field
The present invention relates to the method and apparatus of production heat distortion magnet.
Background technology
Rare earth-Fe-B base permanent magnet be widely used in household electrical appliance, electric tool, wind-power electricity generation,
The fields such as pure electric automobile/hybrid vehicle.Compared with sintered magnet and bonded permanent magnet, thermal deformation
Rare earth/iron/boryl magnet due to magnetic anisotropy, be free of or lower content heavy rare earth element such as Dy
With Tb, can be increasingly to be attracted attention the advantages of near-net-shape technique productions.
Existing thermal deformation technique includes molding, extrusion molding and roll-in etc., but there are still such as
Lower problem：The magnetic property lack of homogeneity of made magnet, low production efficiency is, it is necessary to develop continuous hot-press
Technique and equipment；The shape of existing product is mainly magnet ring, and such as tabular and arc-shaped
The production technology of the magnet of other shapes is still immature.
The content of the invention
It is an object of the invention to solve above mentioned problem of the prior art.
The purpose is what is realized by producing the method for heat distortion magnet, and this method includes：In hot pressing
In step, quenched powder is implemented hot pressing to obtain preform；In hot deformation step, to described
Preform implements thermal deformation to obtain heat distortion magnet, wherein will be described preforming using extrusion head
Base is via discharging opening with the direct of travel of extrusion head and the mode extrusion molding in opposite direction that discharges.
On the other hand, the purpose is what is realized by producing the equipment of heat distortion magnet, the equipment bag
Include：Quenched powder is implemented hot pressing to obtain the hot-press arrangement of preform；It is real to the preform
Applying heat deformation is to obtain the thermal deformation device of heat distortion magnet, and the thermal deformation device has extrusion head,
So that the preform is in opposite direction with the direct of travel of extrusion head and discharging via discharging opening
Mode extrusion molding.
Various aspects of the invention are explained in more detail according to accompanying drawing below.
Brief description of the drawings
Fig. 1 show the schematic diagram of the thermal deformation technique according to one embodiment of the invention；
Fig. 2 show the photo in kind of the thermal deformation extrusion head of the embodiment shown in Fig. 1；
Fig. 3 show the X-ray diffraction (XRD) on the magnet two sides of the embodiment shown in Fig. 1
Spectrum；
Fig. 4 show the schematic diagram of the thermal deformation technique according to another embodiment of the invention；
Fig. 5 show the schematic diagram of the thermal deformation technique according to another embodiment of the invention；
Fig. 6 show the reality of the mould, extrusion head and heat distortion magnet of the embodiment shown in Fig. 5
Thing photo；
Fig. 7 is shown according to the hot pressing of another embodiment of the invention and showing for thermal deformation technique
It is intended to.
Embodiment
Unless otherwise indicated, the application is mentioned all publications, patent application, patent and its
Its bibliography is all incorporated into herein in full by reference, is presented in herein equivalent to full text.
Unless otherwise defined, all technologies used herein and scientific terminology have belonging to the present invention
The same implication that field those of ordinary skill is generally understood.In case of conflict, with this explanation
School bag includes definition and is defined.
When with scope, preferred scope or preferred numerical upper limits and preferred numerical lower limits
When form states some amount, concentration or other values or parameter, it should be understood that equivalent to specifically taking off
Show by by any pair of range limit or preferred value and any range lower limit or preferred value knot
Any scope altogether, without considering whether the scope specifically discloses.Unless otherwise noted, originally
Number range listed by text is intended to include the end points of scope, and should within the scope of all integers and
Fraction.
The present invention relates to the method for production heat distortion magnet, this method includes：In heat-press step,
Quenched powder is implemented hot pressing to obtain preform；In hot deformation step, to the preform
Implement thermal deformation to obtain heat distortion magnet, wherein using extrusion head by the preform via going out
Material mouth is with the direct of travel of extrusion head and the mode extrusion molding in opposite direction that discharges.
Quenched powder
Have no particular limits, for example may be used for the quenched powder used in the method according to the invention
To obtain rapid tempering belt by melt-quenching method, rapid tempering belt is then pulverized into acquisition quenched powder.Can also
Using commercially available quenched powder, such as purchased from the MQU of Magnequench (Tianjin) Co., Ltd.
Deng the magnetic of series.The quenched powder used in the method according to the invention can have nano level
Crystallite dimension or amorphous state, and the crystallization in thermal deformation process.
The alloy composition of quenched powder for using in the method according to the invention is not limited particularly
System, for example, can use RE2Fe14B single-phase alloys, wherein RE represent Nd or other rare earths member
Element or combinations thereof, can also use two-phase alloys, it is for example by RE2Fe14B phases and richness RE
Phase composition, or by RE2Fe14B phases and soft magnetism phase composition.
Heat-press step
In an embodiment of the method according to the invention, in heat-press step, 600 to
Hot pressing is implemented to the quenched powder with 50 to 200MPa pressure under 750 DEG C of hot pressing temperature.
Had no particular limits for the protective atmosphere used in the heat-press step, for example can be with
Vacuumize before heating, such as less than 1 × 10-1Pa, preferably shorter than 6 × 10-2Pa.For
The heating rate used in the heat-press step has no particular limits, for example can for 50 to
200 DEG C/min, preferably from about 100 DEG C/min.After predetermined hot pressing temperature is reached, Ke Yishi
Locality is incubated.Had no particular limits for the soaking time used in the heat-press step,
It for example can be 0 to 120 second, preferably from about 1 minute.Preform can be cuboid,
Can be cylinder, or the section with other shapes cylinder.
In the case where heat-press step and hot deformation step are implemented with adjoining one another, in hot pressing step
Predetermined temperature is reached in rapid and is completed after hot pressing, and preform is sent directly into hot deformation step.
In the case where heat-press step and hot deformation step are implemented separately each other, in hot pressing step
Predetermined temperature is reached in rapid and is completed after hot pressing, is stopped heating and unloading pressure, is made preform
Natural cooling, preferably uses inert gas and is cooled down, such as Ar or N2.It is less than in temperature
After 200 DEG C, preform is taken out, is then fed into hot deformation step.
Hot deformation step
In another embodiment of the method according to the invention, in hot deformation step, 750
Heat is implemented to the preform with 50 to 200MPa pressure under to 950 DEG C of heat distortion temperatures
Deformation.
Have no particular limits, for example may be used for the protective atmosphere used in the hot deformation step
To vacuumize before heating, such as less than 1 × 10-1Pa, preferably shorter than 6 × 10-2Pa, then
It is filled with inert gas, such as Ar.Do not have for the heating rate used in the hot deformation step
Special limitation, for example, can be 50 to 200 DEG C/min, preferably from about 100 DEG C/min.Reaching
After predetermined heat distortion temperature, it can be suitably incubated or be not incubated.For described
The soaking time used in hot deformation step has no particular limits, for example, can be 2 to 4 minutes,
Preferably from about 3 minutes.After predetermined soaking time is reached, thermal deformation is come into effect.
In another embodiment of the method according to the invention, in hot deformation step, it will squeeze
Space between pressure head is used as discharging opening.
In another embodiment of the method according to the invention, in hot deformation step, it will squeeze
The space that pressure head is formed in dies cavity is used as discharging opening.
In another embodiment of the method according to the invention, tool is used in hot deformation step
There is the mould of U-shaped inner chamber, wherein one end of U-shaped inner chamber is used as the charging aperture of the preform simultaneously
And thus extrusion head is pressed into, and the other end of U-shaped inner chamber is used as the discharging opening of heat distortion magnet.
In another embodiment of the method according to the invention, heat-press step and hot deformation step
Implement in a mould with U-shaped inner chamber with adjoining one another, wherein one end of U-shaped inner chamber is used
Make the charging aperture of the quenched powder, quenched powder is expressed to the mistake of the other end in one end from U-shaped inner chamber
The process of densification and thermal deformation is completed in journey, and the other end of U-shaped inner chamber is used as the discharging opening.
In the case where heat-press step and hot deformation step are implemented with adjoining one another, heat-press step and heat
Deforming step is implemented under hot pressing temperature and heat distortion temperature respectively.Specifically, although hot pressing is walked
The thermal deformation mould used in the hot pressing die and hot deformation step that are used in rapid adjoins one another, still
Hot pressing die implements hot pressing under hot pressing temperature, and thermal deformation mould implements heat under heat distortion temperature
Deformation.
In another embodiment of the method according to the invention, the discharging opening has can be free
The section in the section of design shape, such as rectangle or arc.
On the other hand, the invention further relates to produce the equipment of heat distortion magnet, the equipment includes：It is right
Quenched powder implements hot pressing to obtain the hot-press arrangement of preform；Thermal change is implemented to the preform
Shape is to obtain the thermal deformation device of heat distortion magnet, and the thermal deformation device has extrusion head, so that will
The preform is squeezed via discharging opening with the direct of travel of extrusion head with the mode in opposite direction that discharges
Go out shaping.
Quenched powder
Have no particular limits, for example may be used for the quenched powder used in the device in accordance with the invention
To obtain rapid tempering belt by melt-quenching method, rapid tempering belt is then pulverized into acquisition quenched powder.Can also
Using commercially available quenched powder, such as purchased from the MQU of Magnequench (Tianjin) Co., Ltd.
Deng the magnetic of series.The quenched powder used in the device in accordance with the invention can have nano level
Crystallite dimension or amorphous state, and the crystallization in thermal deformation device.
The alloy composition of quenched powder for using in the device in accordance with the invention is not limited particularly
System, for example, can use RE2Fe14B single-phase alloys, wherein RE represent Nd or other rare earths member
Element or combinations thereof, can also use two-phase alloys, it is for example by RE2Fe14B phases and richness RE
Phase composition, or by RE2Fe14B phases and soft magnetism phase composition.
Hot-press arrangement
According to the present invention equipment an embodiment in, the hot-press arrangement 600 to
Hot pressing is implemented to the quenched powder with 50 to 200MPa pressure under 750 DEG C of hot pressing temperature.
Had no particular limits for the protective atmosphere used in the hot-press arrangement, for example can be with
Vacuumize before heating, such as less than 1 × 10-1Pa, preferably shorter than 6 × 10-2Pa.For
The heating rate used in the hot-press arrangement has no particular limits, for example can for 50 to
200 DEG C/min, preferably from about 100 DEG C/min.After predetermined hot pressing temperature is reached, Ke Yishi
Locality is incubated.Had no particular limits for the soaking time used in the hot-press arrangement,
It for example can be 0 to 120 second, preferably from about 1 minute.Preform can be cuboid,
Can be cylinder, or the section with other shapes cylinder.
In the case where hot-press arrangement and thermal deformation device adjoin one another, reached in the hot-press arrangement
To after predetermined soaking time, preform is sent directly into thermal deformation device.
In the case where hot-press arrangement and thermal deformation device are separated each other, reached in the hot-press arrangement
To after predetermined soaking time, stop heating and unloading pressure, make preform natural cooling,
Preferably use inert gas to be cooled down, such as Ar or N2.It is less than in temperature after 200 DEG C,
Preform is taken out, is then fed into thermal deformation device.
Thermal deformation device
In another embodiment of the equipment according to the present invention, the thermal deformation device is 750
Heat is implemented to the preform with 50 to 200MPa pressure under to 950 DEG C of heat distortion temperatures
Deformation.
Have no particular limits, for example may be used for the protective atmosphere used in the thermal deformation device
To vacuumize before heating, such as less than 1 × 10-1Pa, preferably shorter than 6 × 10-2Pa, then
It is filled with inert gas, such as Ar.Do not have for the heating rate used in the thermal deformation device
Special limitation, for example, can be 50 to 200 DEG C/min, preferably from about 100 DEG C/min.Reaching
After predetermined heat distortion temperature, can suitably it be incubated.For in the thermal deformation device
The soaking time of middle use has no particular limits, for example, can be 2 to 4 minutes, be preferably from about
3 minutes.After predetermined soaking time is reached, thermal deformation is come into effect.
In another embodiment of the equipment according to the present invention, the extruding of the thermal deformation device
There is the space as discharging opening between head.
In another embodiment of the equipment according to the present invention, the extruding of the thermal deformation device
Head forms the space as discharging opening in dies cavity.
In another embodiment of the equipment according to the present invention, the thermal deformation device includes tool
There is the mould of U-shaped inner chamber, wherein one end of U-shaped inner chamber is used as the charging aperture of the preform simultaneously
And thus extrusion head is pressed into, and the other end of U-shaped inner chamber is used as the discharging opening of heat distortion magnet.
In another embodiment of the equipment according to the present invention, the hot-press arrangement and the heat
Deformation device forms the one of a mould, wherein U-shaped inner chamber with U-shaped inner chamber with adjoining one another
Charging aperture of the end as the quenched powder, quenched powder is being expressed to the other end from one end of U-shaped inner chamber
During complete densification and thermal deformation process, and the other end of U-shaped inner chamber be used as the heat
The discharging opening of deformation device.
In the case where hot-press arrangement and thermal deformation device adjoin one another, hot-press arrangement and heat become shape dress
Put and implement respectively under hot pressing temperature and heat distortion temperature.Specifically, although make in hot-press arrangement
Hot pressing die adjoins one another with the thermal deformation mould used in thermal deformation device, but hot-die
Tool implements hot pressing under hot pressing temperature, and thermal deformation mould implements thermal deformation under heat distortion temperature.
Hot pressing temperature and heat distortion temperature are the actual temperature that material is reached in the process respectively, due to heat
Conduction, material first reaches hot pressing temperature, heat distortion temperature, hot pressing and thermal deformation is then risen to again
Technique is respectively completed in this process.
In another embodiment of the equipment according to the present invention, the discharging opening has can be free
The section in the section of design shape, such as rectangle or arc.
Embodiment 1
Fig. 1 show the schematic diagram of the thermal deformation technique of the present embodiment, including is used in the present embodiment
Extrusion head (1), the profile and stereogram of mould (2) and heat distortion magnet (3).Fig. 2
Show the photo in kind of the thermal deformation extrusion head used in the present embodiment, wherein extrusion head (1) it
Between space be used as discharging opening (5).
Hot pressing
Commercially available MQU-F magnetics are fitted into hot pressing die, by hot pressing die together with magnetic
It is put into hot press.It is evacuated to less than 6 × 10-2Begun to warm up during Pa.With about 100 DEG C/min
Heating rate heated during, to hot pressing die apply not less than 50MPa pressure.In temperature
Degree reaches after 670 DEG C that heat-insulation pressure keeping 1 minute, is then shut off heating system and liquid at such a temperature
Pressure system.Using Ar gas cooling preform samples, take out pre- after temperature is less than 200 DEG C
Into parison sample.
Thermal deformation
Preform is fitted into thermal deformation mould, thermal deformation mould is put together with preform
Enter in stove.It is evacuated to less than 6 × 10-2After Pa, Ar gases are filled with as protective gas.Then
Start to heat with about 100 DEG C/min heating rate, after temperature reaches 800 to 860 DEG C, at this
At a temperature of be incubated 3 minutes.Then start the hydraulic system of thermal deformation process, start with such as Fig. 2
Shown thermal deformation extrusion head implements extrusion molding, and the wherein space between extrusion head (1) is with making
Material mouth (5).After the completion of extrusion molding process, heating system and hydraulic system are closed.Certainly
So it is cooled to after room temperature, opens thermal deformation mould, obtains heat distortion magnet.
Fig. 3 show X-ray diffraction (XRD) spectrum on the magnet two sides of the present embodiment acquisition.
Utilize I as shown in Figure 3(006)/I(105)Proportional numerical value as it is grain-oriented measurement be estimated.
The proportional numerical value on gained magnet two sides is almost equal.This shows that the two sides of the magnet of gained has
Consistent crystal grain orientation uniformity.
Embodiment 2
Fig. 4 show the schematic diagram of the thermal deformation technique of the present embodiment, including is used in the present embodiment
Extrusion head (1), thermal deformation mould, preform (4), heat distortion magnet (3) and discharging opening
(5) stereogram (a) of profile and the heat distortion magnet with arc section.
Using hot pressing similar to Example 1, preform is obtained.
In the present embodiment, thermal deformation mould has U-shaped inner chamber, and wherein one end of U-shaped inner chamber is used
The charging aperture and extrusion head (1) for making preform (4) are thus pressed into, and U-shaped inner chamber is another
One end is used as discharging opening (5).
In the present embodiment, the section of the discharging opening (5) of thermal deformation mould is designed to arc.It is logical
Cross and implement back of the body extrusion to preform, obtain the heat distortion magnet with arc section.For heat change
For shape magnet, because crystal grain orientation is always parallel to pressure direction, gained has arc section
Heat distortion magnet be oriented to radially, this is conducive to the application in motor.
Embodiment 3
Fig. 5 show the schematic diagram of the thermal deformation technique of the present embodiment, including is used in the present embodiment
Extrusion head (1), the profile and stereogram of mould and heat distortion magnet (3).Fig. 6 is shown
The mould used in the present embodiment and the photo (a) in kind of extrusion head and the photograph in kind of heat distortion magnet
Piece (b).
Using hot pressing similar to Example 1, preform is obtained.
In the present embodiment, space extrusion head formed in the inner chamber of thermal deformation mould is with making
Material mouth.As it can be seen in figures 5 and 6, two heat distortion magnets can be obtained once.
Embodiment 4
Fig. 7 show the hot pressing of the present embodiment and the schematic diagram of thermal deformation technique, including the present embodiment
The middle extrusion head (1) used, mould, quenched powder (6), preform (4) and heat distortion magnet
(3) profile, wherein right half part (a) implement heat as hot-press arrangement under hot pressing temperature
Step is pressed, left-half (b) implements hot deformation step as thermal deformation device under heat distortion temperature.
In the present embodiment, hot-press arrangement and thermal deformation device form one with adjoining one another has U
The mould of shape inner chamber, wherein one end of U-shaped inner chamber are used as the charging aperture of quenched powder (6), fast quenching
Powder completes the mistake of densification and thermal deformation during being expressed to the other end in one end from U-shaped inner chamber
Journey, and the other end of U-shaped inner chamber is used as the discharging opening of thermal deformation device.
In Fig. 7 right half part (a), under hot pressing temperature, pressure is applied by extrusion head (1),
By quenched powder (6) compacting.Because the section of the charging aperture of quenched powder (6) is gradually reduced and fast quenching
Powder (6) flows at temperature and pressure, makes the preform (4) by being compacted quenched powder formation
Density gradually increase.When preform (4) flows into Fig. 7 left-half (b), in heat
Under deformation temperature and extrusion pressure, obtaining has grain-oriented heat distortion magnet.
Specific embodiment described above is only intended to explain the design of the application, should not be construed as
The scope of the present invention is limited in any way.Conversely, it should be clearly understood that reading this paper explanation
After book, those of ordinary skill in the art can implement other under without departing substantially from spirit of the invention
Technical scheme, modification etc..
Claims (16)
1. producing the method for heat distortion magnet, this method includes：
In heat-press step, quenched powder is implemented hot pressing to obtain preform；
In hot deformation step, implement thermal deformation to the preform to obtain heat distortion magnet,
Wherein using extrusion head by the preform via discharging opening with the direct of travel of extrusion head and discharging
Mode extrusion molding in opposite direction.
2. method according to claim 1, it is characterised in that in heat-press step, 600 to
Hot pressing is implemented to the quenched powder with 50 to 200MPa pressure at a temperature of 750 DEG C.
3. according to the method for claim 1 or 2, it is characterised in that in hot deformation step,
Thermal change is implemented to the preform with 50 to 200MPa pressure at a temperature of 750 to 950 DEG C
Shape.
4. according to the method for one of claims 1 to 3, it is characterised in that in hot deformation step,
Space between extrusion head is used as discharging opening.
5. according to the method for one of claims 1 to 3, it is characterised in that in hot deformation step,
The space that extrusion head is formed in dies cavity is used as discharging opening.
6. according to the method for one of claims 1 to 3, it is characterised in that in hot deformation step
Using the mould with U-shaped inner chamber, wherein one end of U-shaped inner chamber is used as entering for the preform
Material mouth and thus extrusion head is pressed into, and the other end of U-shaped inner chamber is used as the discharging of heat distortion magnet
Mouthful.
7. according to the method for one of claims 1 to 3, it is characterised in that heat-press step and heat become
Shape step is implemented with adjoining one another in a mould with U-shaped inner chamber, wherein U-shaped inner chamber
One end is used as the charging aperture of the quenched powder, and the other end of U-shaped inner chamber is used as the discharging opening.
8. according to the method for one of claim 1 to 7, it is characterised in that the discharging opening has
The section of rectangle or arc.
9. producing the equipment of heat distortion magnet, the equipment includes：
Quenched powder is implemented hot pressing to obtain the hot-press arrangement of preform；
The preform is implemented thermal deformation to obtain the thermal deformation device of heat distortion magnet, the heat
Deformation device has extrusion head, so that by the preform via discharging opening with the traveling of extrusion head
Direction and the mode extrusion molding in opposite direction that discharges.
10. equipment according to claim 9, it is characterised in that the hot-press arrangement 600 to
Hot pressing is implemented to the quenched powder with 50 to 200MPa pressure at a temperature of 750 DEG C.
11. equipment according to claim 9 or 10, it is characterised in that the thermal deformation device exists
Thermal change is implemented to the preform with 50 to 200MPa pressure at a temperature of 750 to 950 DEG C
Shape.
12. according to the equipment of one of claim 9 to 11, it is characterised in that the thermal change shape dress
There is the space as discharging opening between the extrusion head put.
13. according to the equipment of one of claim 9 to 11, it is characterised in that the thermal change shape dress
The extrusion head put forms the space as discharging opening in dies cavity.
14. according to the equipment of one of claim 9 to 11, it is characterised in that the thermal change shape dress
Put including the mould with U-shaped inner chamber, wherein one end of U-shaped inner chamber is used as the preform
Charging aperture and thus extrusion head is pressed into, and the other end of U-shaped inner chamber is used as going out for heat distortion magnet
Material mouth.
15. according to the equipment of one of claim 9 to 11, it is characterised in that the hot-press arrangement
A mould with U-shaped inner chamber, wherein U-shaped are formed with the thermal deformation device with adjoining one another
One end of inner chamber is used as the charging aperture of the quenched powder, and the other end of U-shaped inner chamber is used as the heat
The discharging opening of deformation device.
16. according to the equipment of one of claim 9 to 15, it is characterised in that the discharging opening tool
There is the section of rectangle or arc.
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| CN201610022630.8A CN106964778A (en) | 2016-01-14 | 2016-01-14 | The method and apparatus for producing heat distortion magnet |
| JP2017004449A JP6890424B2 (en) | 2016-01-14 | 2017-01-13 | Manufacturing method and equipment for heat-deformed magnets |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342157A (en) * | 2017-08-08 | 2017-11-10 | 徐州鑫贝克电力设备有限公司 | A kind of power transformer based on nano material |
| CN111326336A (en) * | 2020-02-28 | 2020-06-23 | 大连理工大学 | Preparation method of oscillation type thermal deformation and permeation integrated high-coercivity rare earth permanent magnet |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0013747A1 (en) * | 1979-01-30 | 1980-08-06 | Glacier Gmbh - Deva Werke | Apparatus for the continuous extrusion of electrically conductive granular materials, preferably metal powder |
| JPS58130202A (en) * | 1982-01-29 | 1983-08-03 | Toshiba Corp | Production of sintered body |
| CN1709605A (en) * | 2005-06-16 | 2005-12-21 | 上海交通大学 | U-shape isochannel repeated extruding apparatus for preparing ultrafine crystal material |
| CN102319757A (en) * | 2011-08-18 | 2012-01-18 | 中国兵器工业第五二研究所 | Preparation method of magnesium alloy variable-section cylindrical member by composite extrusion deformation |
| CN102832003A (en) * | 2011-06-17 | 2012-12-19 | 中国科学院宁波材料技术与工程研究所 | Neodymium/ferrum/boron permanent magnet |
| CN103123862A (en) * | 2011-11-21 | 2013-05-29 | 中国科学院宁波材料技术与工程研究所 | Method for improving performance of thermal compression or thermal deformation radiation orientation neodymium iron boron permanent magnet ring and axial uniformity thereof |
| CN103949642A (en) * | 2014-05-19 | 2014-07-30 | 上海交通大学 | Continuous pressing mould for annular magnet and pressing method of continuous pressing mould |
| CN104737251A (en) * | 2012-10-23 | 2015-06-24 | 丰田自动车株式会社 | Rare-earth-magnet production method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3818397B2 (en) * | 1995-10-27 | 2006-09-06 | 株式会社ダイドー電子 | Manufacturing method of multi-structure rare earth metal magnet body |
| JP3942873B2 (en) * | 2000-12-22 | 2007-07-11 | 株式会社小松製作所 | Extrusion processing apparatus and extrusion processing method |
| JP2003311320A (en) * | 2002-04-25 | 2003-11-05 | Mitsui Mining & Smelting Co Ltd | Plastic forming device, and plastic forming method |
| JP2015123463A (en) * | 2013-12-26 | 2015-07-06 | トヨタ自動車株式会社 | Forward extrusion forging device and forward extrusion forging method |
-
2016
- 2016-01-14 CN CN201610022630.8A patent/CN106964778A/en active Pending
-
2017
- 2017-01-13 JP JP2017004449A patent/JP6890424B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0013747A1 (en) * | 1979-01-30 | 1980-08-06 | Glacier Gmbh - Deva Werke | Apparatus for the continuous extrusion of electrically conductive granular materials, preferably metal powder |
| JPS58130202A (en) * | 1982-01-29 | 1983-08-03 | Toshiba Corp | Production of sintered body |
| CN1709605A (en) * | 2005-06-16 | 2005-12-21 | 上海交通大学 | U-shape isochannel repeated extruding apparatus for preparing ultrafine crystal material |
| CN102832003A (en) * | 2011-06-17 | 2012-12-19 | 中国科学院宁波材料技术与工程研究所 | Neodymium/ferrum/boron permanent magnet |
| CN102319757A (en) * | 2011-08-18 | 2012-01-18 | 中国兵器工业第五二研究所 | Preparation method of magnesium alloy variable-section cylindrical member by composite extrusion deformation |
| CN103123862A (en) * | 2011-11-21 | 2013-05-29 | 中国科学院宁波材料技术与工程研究所 | Method for improving performance of thermal compression or thermal deformation radiation orientation neodymium iron boron permanent magnet ring and axial uniformity thereof |
| CN104737251A (en) * | 2012-10-23 | 2015-06-24 | 丰田自动车株式会社 | Rare-earth-magnet production method |
| CN103949642A (en) * | 2014-05-19 | 2014-07-30 | 上海交通大学 | Continuous pressing mould for annular magnet and pressing method of continuous pressing mould |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342157A (en) * | 2017-08-08 | 2017-11-10 | 徐州鑫贝克电力设备有限公司 | A kind of power transformer based on nano material |
| CN111326336A (en) * | 2020-02-28 | 2020-06-23 | 大连理工大学 | Preparation method of oscillation type thermal deformation and permeation integrated high-coercivity rare earth permanent magnet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6890424B2 (en) | 2021-06-18 |
| JP2017126752A (en) | 2017-07-20 |
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