CN104505205A - Rare earth permanent magnetic material molding equipment and molding method - Google Patents
Rare earth permanent magnetic material molding equipment and molding method Download PDFInfo
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- CN104505205A CN104505205A CN201410674356.3A CN201410674356A CN104505205A CN 104505205 A CN104505205 A CN 104505205A CN 201410674356 A CN201410674356 A CN 201410674356A CN 104505205 A CN104505205 A CN 104505205A
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Abstract
The invention discloses rare earth permanent magnetic material molding equipment, which comprises one or a plurality of magnetic poles, and a die for containing magnetic powder, wherein the magnetic pole shrinks from tail to top, and the magnetic powder moves relatively to the magnetic pole. The magnetic powder is oriented through movement of the magnetic powder and motionless of a magnetic field; the front end of the magnetic field shrinks, so that line-by-line scanning is performed on the magnetic powder in movement, and the limit that a molding area is smaller than a magnet pole head in orientation and molding by the conventional magnetic field is broken. The equipment can prepare plate-like magnetic steel of large area or higher annular or tile magnetic steel.
Description
Technical field
The present invention relates to a kind of manufacturing technique of permanent-magnet material field, particularly relate to a kind of rare earth permanent-magnetic material former and forming method.
Background technology
Rare earth permanent-magnetic material has stronger anisotropy, is widely used in the preparation of all kinds of high performance magnetic material.Existing rare earth permanent-magnetic material, usually by filling in mould by magnetic, is prepared compressing mode while of mould applying magnetic field.But in this kind of molding mode, size and the alignment magnetic field cartridge of rare earth permanent-magnetic material are suitable, also namely the size of rare earth permanent-magnetic material is subject to the restriction of alignment magnetic field cartridge, and the size of the rare earth permanent-magnetic material therefore adopting this kind of molding mode to prepare is usually less.
Such as application number is CN200720170177.1 disclosed a kind of " rare earth permanent magnetism hydrodynamic press ", and it is magnetized to the magnetic in former and formpiston by upper punch and undershoot; In order to fully magnetize, the size of former and formpiston must adapt with upper undershoot.
And for the orientation of radial ringed magnet, by scolding the mode in magnetic field to radial toroidal magnet orientation in prior art, this kind of aligned restriction being subject to plug magnetic conduction, causes magnetic field intensity lower.Such as application number is 00125615.7 disclosed " a kind of manufacture craft of shaped radiation orientation sintering Ru-Fe-Mn magnet ring and mould thereof ", and it by inserting plug in the middle of former and formpiston.
Summary of the invention
The technical problem that the present invention solves is, for the above-mentioned deficiency of prior art, proposes a kind of rare earth permanent-magnetic material former preparing large scale tabular magnet steel or high wall, small-size annular or watt shape radial magnet steel.
The technical scheme that technical solution problem of the present invention adopts proposes a kind of rare earth permanent-magnetic material former, and it comprises one or more magnetic pole and the mould for holding magnetic; Described magnetic pole is restrained to top by end, described magnetic opposing polarities motion.
Further, described magnetic pole top is line style.
Further, the rotary motion of described magnetic opposing polarities or planar reciprocating.
Further, also comprise pressure head, in magnetic motion process, pressure head is compressing to magnetic.
Further, described magnetic movement rate is not less than 100mm/s,
Further, magnetic pole and magnetic field intensity is greater than 0.8T.
Further, magnetic field, described magnetic pole top width is less than 5mm.
The present invention also discloses a kind of rare earth permanent-magnetic material forming method, and it comprises step:
One or more magnetic pole of being restrained to top by end is set;
Arrange above magnetic pole top by the magnetic of mould brought into motion;
Compressing in the process of magnetic motion.
Further, be also included in below magnetic and non-magnetic push-down head is set, the seaming chuck of magnetic conduction is set above magnetic; Magnetic is driven rotary motion in the plane or reciprocating motion by mould; Magnetic field pressing pressure is parallel to magnetic direction.
Further, be also included in interspersed magnetic conduction plug in magnetic, magnetic is driven by mould and moves around magnetic conduction Mandrel Rotating; Magnetic pressing pressure is perpendicular to magnetic direction.
Hinge structure of the present invention has following beneficial effect:
Employing magnetic moves, and the motionless form in magnetic field is to magnetic orientation; The convergence of front end, magnetic field makes magnetic in motion process, carry out Surface scan to magnetic thus breach existing magnetic field when oriented moulding, forming area is less than the restriction of magnet cartridge, makes the present invention can prepare the larger tabular magnet steel of area or highly higher ring-type or tiles magnet steel.
Accompanying drawing explanation
Fig. 1 is the structural representation preparing plate shaped, magnets in the present invention first preferred embodiment;
Fig. 2 is the structural representation preparing plate shaped, magnets in the present invention second preferred embodiment;
Fig. 3 is the structural representation of preparation annular or tile-shaped magnet in the present invention the 3rd preferred embodiment;
Fig. 4 is the structural representation of preparation annular or tile-shaped magnet in the present invention the 4th preferred embodiment.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Please refer to Fig. 1, Fig. 1 is the structural representation being prepared plate shaped, magnets in the present invention first preferred embodiment by rotation mode.In FIG, be wound around wired bag 5 to produce magnetic field bottom magnetic pole 4, magnetic pole 4 structurally to be restrained gradually to top by end thus is made magnetic field be that line style is converged in top.In the preferred case, magnetic field, magnetic pole top width is generally less than 5mm.
Although illustrate only the magnetic pole 4 that is wound around wired bag 5 in Fig. 1, this magnetic pole 4 multiple can be set according to actual needs.Multiple magnetic pole 4 can opposite pole or each other like pole each other.
In the present embodiment, the magnetic field of magnetic pole 4 is produced by electromagnetic mode, but permanent magnetism mode also can be adopted to produce, or adopts electromagnetism and permanent magnetic overlapped mode to produce.
The magnetic field of magnetic pole 4 can be stationary magnetic field, also can be rule or irregular magnetic field.
Magnetic pole 4 is provided with non-magnetic push-down head 3, push-down head 3 is provided with magnetic 2, magnetic 2 does planar rotational movement under mould drives.
Magnetic 2 is in Plane Rotation process, and linear magnetic field carries out Surface scan to magnetic 2 and makes magnetic arranged in parallel along magnetic direction.
Magnetic 2 is in Plane Rotation process, and upper push-down head is suppressed magnetic, thus remains the state of orientation of magnetic, prepares the tabular blank that density is 3.8 ~ 4.5g/cm3.
Adopt the magnetic oriented moulding mode of the present embodiment, breach the condition that traditional magnetic oriented moulding is subject to cartridge size restrictions, significantly can expand the scope of magnetic field orientating, thus high-performance, large-sized plate shaped, magnets can be prepared.
Table 1 gives the length vs of the magnet adopting the present embodiment molding mode and common molding mode to prepare.As can be seen from Table 1, the magnet length that the present embodiment can be prepared grows more than one times than common molding mode.
In addition, due to magnetic motion in the present embodiment, magnetic pole does not move, and the movement velocity of magnetic and the magnetic field intensity of magnetic pole can affect remanent magnetism inhomogeneities.
Table 2 gives when magnetic pole and magnetic field intensity is greater than 0.8T, and harmonic motion speed (30mm/s) is with in high movement rate (100mm/s) situation, and the remanent magnetism inhomogeneities of the magnet different parts of preparation contrasts.Can find out in table 2, under harmonic motion speed, remanent magnetism inhomogeneities is large, and movement rate is higher than after 100mm/s, and remanent magnetism inhomogeneities significantly lowers.
Table 1 rotation mode and common molding mode are prepared magnet length and are contrasted
| Molding mode | Magnet length (mm) |
| Common molding mode | 150 |
| Rotation mode | 300 |
Table 2 movement velocity and magnet different parts magnetic uniformity contrast
| Magnetic movement rate | Remanent magnetism inhomogeneities (%) |
| 30mm/s | 10 |
| 100mm/s | <1 |
Please refer to Fig. 2, Fig. 2 is the structural representation being prepared plate shaped, magnets in the present invention second preferred embodiment by rotation mode.
The difference of the present embodiment and the first preferred embodiment is, magnetic is in the drive lower plane reciprocating motion of mould.
Please refer to Fig. 3, Fig. 3 is the structural representation being prepared ring-type or tiles magnet in the present invention the 3rd preferred embodiment by rotation mode.
In Fig. 3, the convergence of magnetic pole 4 ' front end is in line style, and magnetic pole 4 ' front end length matches with annular or tile-shaped magnet length.Magnetic pole 4 ' is positioned at magnetic side.
Magnetic 2 splendid attire is in non-magnetic former 3 ', and magnetic conduction plug 1 ' runs through magnetic 2, and former 3 ' drives magnetic to rotate around magnetic conduction plug 1 '.Movement rate is greater than 100mm/s.
Because magnetic pole is positioned at outside annular region, magnetic is radially magnetized by magnetic field by rotating manner, after magnetic fully magnetizes, by the pressure perpendicular to magnetic direction, magnetic is pressed into annular or watt shape, and preparing density is 3.8 ~ 4.5g/cm
3annular or watt shape blank.Can prepare by this molding mode radial magnetic shoe or the magnet ring that draw ratio is greater than 2, traditional mode is that radiation is shaping due to what adopt, cannot prepare highly higher magnet ring.The draw ratio that table 3 prepares magnet for the present embodiment rotation mode and common molding mode contrasts, the visible magnet of draw ratio much larger than common molding mode adopting rotation mode can prepare magnet ring.
Table 3 normal radiation is shaping to be contrasted with rotational forming
| Minimum diameter (mm) | Draw ratio (L/D) | |
| Normal radiation is shaping | 30 | <0.5 |
| Rotational forming | 15 | >2. |
Please refer to Fig. 4, Fig. 4 is the structural representation being prepared ring-type or tiles magnet in the present invention the 4th preferred embodiment by rotation mode.
The difference of the present embodiment and the 3rd preferred embodiment is, is provided with magnetic pole in former both sides.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1. a rare earth permanent-magnetic material former, is characterized in that: comprise one or more magnetic pole and the mould for holding magnetic; Described magnetic pole is restrained to top by end, described magnetic opposing polarities motion.
2. rare earth permanent-magnetic material former according to claim 1, is characterized in that: described magnetic pole top is line style.
3. rare earth permanent-magnetic material former according to claim 1, is characterized in that: the rotary motion of described magnetic opposing polarities or planar reciprocating.
4. rare earth permanent-magnetic material former according to claim 3, is characterized in that: also comprise pressure head, and in magnetic motion process, pressure head is compressing to magnetic.
5. rare earth permanent-magnetic material former according to claim 3, is characterized in that: described magnetic movement rate is not less than 100mm/s.
6. the rare earth permanent-magnetic material former according to claim 1 or 3, is characterized in that: described magnetic pole and magnetic field intensity is greater than 0.8T.
7. rare earth permanent-magnetic material former according to claim 2, is characterized in that: magnetic field, described magnetic pole top width is less than 5mm.
8. a rare earth permanent-magnetic material forming method, is characterized in that: comprise step:
One or more magnetic pole of being restrained to top by end is set;
Arrange above magnetic pole top by the magnetic of mould brought into motion;
Compressing in the process of magnetic motion.
9. rare earth permanent-magnetic material forming method according to claim 8, is characterized in that: be also included in below magnetic and arrange non-magnetic push-down head, arrange the seaming chuck of magnetic conduction above magnetic; Magnetic is driven rotary motion in the plane or reciprocating motion by mould; Magnetic field pressing pressure is parallel to magnetic direction.
10. rare earth permanent-magnetic material forming method according to claim 8, is characterized in that: be also included in interspersed magnetic conduction plug in magnetic, and magnetic is driven by mould and moves around magnetic conduction Mandrel Rotating; Magnetic pressing pressure is perpendicular to magnetic direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410674356.3A CN104505205B (en) | 2014-11-21 | 2014-11-21 | Rare earth permanent magnetic material molding equipment and molding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410674356.3A CN104505205B (en) | 2014-11-21 | 2014-11-21 | Rare earth permanent magnetic material molding equipment and molding method |
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| CN104505205A true CN104505205A (en) | 2015-04-08 |
| CN104505205B CN104505205B (en) | 2017-02-22 |
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| CN201410674356.3A Active CN104505205B (en) | 2014-11-21 | 2014-11-21 | Rare earth permanent magnetic material molding equipment and molding method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165847A (en) * | 2019-06-11 | 2019-08-23 | 深圳市瑞达美磁业有限公司 | The production method of the solid magnet of radial anisotropic multipole of different in width waveform |
| CN117705540A (en) * | 2024-02-04 | 2024-03-15 | 包头市科锐微磁新材料有限责任公司 | Isotropic neodymium iron boron rapid quenching magnetic powder sample preparation device |
Citations (5)
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|---|---|---|---|---|
| US3858135A (en) * | 1973-08-14 | 1974-12-31 | S Gray | Push-pull linear motor |
| JPH01139738A (en) * | 1987-11-27 | 1989-06-01 | Hitachi Metals Ltd | Method and apparatus for magnetic material having magnetic anisotropy |
| CN101256898A (en) * | 2008-03-27 | 2008-09-03 | 深圳市天盈德科技有限公司 | Method and apparatus for forming of radiation orientating round ring-shaped magnetic body |
| CN201900263U (en) * | 2010-12-22 | 2011-07-20 | 张保国 | Mould for powder compacting of Al-Ni-Co magnet steel with ultra-high specification |
| CN103123863A (en) * | 2013-02-26 | 2013-05-29 | 江苏东瑞磁材科技有限公司 | Preparation device for radial orientation permanent magnet ring |
-
2014
- 2014-11-21 CN CN201410674356.3A patent/CN104505205B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3858135A (en) * | 1973-08-14 | 1974-12-31 | S Gray | Push-pull linear motor |
| JPH01139738A (en) * | 1987-11-27 | 1989-06-01 | Hitachi Metals Ltd | Method and apparatus for magnetic material having magnetic anisotropy |
| CN101256898A (en) * | 2008-03-27 | 2008-09-03 | 深圳市天盈德科技有限公司 | Method and apparatus for forming of radiation orientating round ring-shaped magnetic body |
| CN201900263U (en) * | 2010-12-22 | 2011-07-20 | 张保国 | Mould for powder compacting of Al-Ni-Co magnet steel with ultra-high specification |
| CN103123863A (en) * | 2013-02-26 | 2013-05-29 | 江苏东瑞磁材科技有限公司 | Preparation device for radial orientation permanent magnet ring |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165847A (en) * | 2019-06-11 | 2019-08-23 | 深圳市瑞达美磁业有限公司 | The production method of the solid magnet of radial anisotropic multipole of different in width waveform |
| US11183908B2 (en) | 2019-06-11 | 2021-11-23 | Shenzhen Radimag Magnets Co., Ltd | Method for producing radially anisotropic multipolar solid magnet adapted to different waveform widths |
| CN117705540A (en) * | 2024-02-04 | 2024-03-15 | 包头市科锐微磁新材料有限责任公司 | Isotropic neodymium iron boron rapid quenching magnetic powder sample preparation device |
| CN117705540B (en) * | 2024-02-04 | 2024-05-03 | 包头市科锐微磁新材料有限责任公司 | Isotropic neodymium iron boron rapid quenching magnetic powder sample preparation device |
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| CN104505205B (en) | 2017-02-22 |
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