CN105118605A - Motor, transformer core and manufacturing method thereof - Google Patents
Motor, transformer core and manufacturing method thereof Download PDFInfo
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- CN105118605A CN105118605A CN201510535075.4A CN201510535075A CN105118605A CN 105118605 A CN105118605 A CN 105118605A CN 201510535075 A CN201510535075 A CN 201510535075A CN 105118605 A CN105118605 A CN 105118605A
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Abstract
The invention relates to a motor, a transformation core and a manufacturing method of the transformation core. The transformation core is characterized by being composed of a plurality of magnetic conduction metal powder compact solid layers and a plurality of ceramic insulation powder compact solid layers, the magnetic conduction metal powder compact solid layers and the ceramic insulation powder compact solid layers are alternately distributed from bottom to top at intervals, and the bottommost layer and the topmost layer of the core are the ceramic insulation powder compact solid layers. The transformer core is high in material utilization rate, high in mechanical strength, high in size precision, small in eddy current loss and high in magnetic permeability.
Description
Technical field
The present invention relates to electrical field, particularly a kind of motor, transformer core and manufacture method thereof.
Background technology
At present, most iron core of electric motor, transformer core are all be formed by stacking by the steel disc of magnetic conduction, have insulating barrier between steel disc.Motor, transformer core are all the in-house eddy current of the metal magnetic conducting that causes in weakening because being in alternation magnetic field by this structure.But this structure has the following disadvantages: 1, because iron core of electric motor is not the shape of rule, so become in the process of lamination to have a large amount of waste materials in the punching of use monoblock steel disc, cause waste of material; 2, the lamination that punching is shaped needs folded riveting just can make iron core together, because be folded riveting and be loose lamellar structure, so mechanical strength is little, can not bears too large shearing force and peeling force, should not use as primary structure member; 3, the part dimension precision of punching steel disc after laminating is lower than the parts of conventional cut, and punching laminate after parts be not suitable for secondary operations.
CN1122527A discloses a kind of dust core solved the problem, it adopts the mode of metal dust and insulating powder mixing compacting to make iron core, this kind of mode effectively solves 3 deficiencies of above conventional art existence, but this technology but introduces new problem, that is exactly the problem of magnetic conductive metal powder and ceramic insulation powder blend ratio: if the many magnetic conductions of metal dust are effective, but have contact between metal dust particulate, conduct electricity, after conduction, will eddy generation loss cause efficiency unshakable in one's determination to reduce; And if ceramic insulation content of powder is many, eddy current loss can reduce, but insulating powder not magnetic conduction, magnetic property unshakable in one's determination can be caused like this to decline.Both of these case is shifting, can not get both, this technology fold riveting form with traditional punching compared be that permeability or eddy current loss degree are all poor, this is also the main cause that this technology can not be promoted.
Summary of the invention
The object of the invention is to provide motor, transformer core and the manufacture method thereof that a kind of stock utilization solved the problem is high, mechanical strength is high, dimensional accuracy is high, eddy current loss is little, permeability is high.
Technical scheme of the present invention is:
A kind of motor, transformer core, it is characterized in that: be made up of the fine and close physical layer of multilayer magnetic conductive metal powder and the fine and close physical layer of multi-layer ceramics insulating powder, the fine and close physical layer of described magnetic conductive metal powder and the fine and close physical layer of ceramic insulation powder are in interval alternative distribution from the bottom to top, and the bottom unshakable in one's determination and most top layer are ceramic insulation powder densification physical layer.
Above-mentioned motor, transformer core, the thickness of described magnetic conductive metal powder bed is 0.1mm-0.8mm.
Above-mentioned motor, transformer core, the thickness of described ceramic insulation powder bed is 0.02mm-0.1mm.
Above-mentioned motor, a manufacture method for transformer core, is characterized in that, comprise the steps:
1), prepare the mould that conforms to iron core shape, comprise upper die and lower die;
2), in counterdie, first load the ceramic insulation powder of setting thickness, then patrix under forcing press effect under be about to lead ceramic insulation powder and be pressed into the fine and close physical layer of ceramic insulation powder, then patrix is up lifts;
3), lower mould bottom plate moves down, the fine and close physical layer of ceramic insulation powder moves down thereupon, the magnetic conductive metal powder of setting thickness is filled in the space that the fine and close physical layer of ceramic insulation powder declines in counterdie, then patrix is again about to down magnetic conductive metal powder and is pressed into the fine and close physical layer of magnetic conductive metal powder and fine and close physical layer is compressed to one with ceramic insulation powder before simultaneously under forcing press effect, and then patrix is up lifts;
4), lower mould bottom plate moves down again, repeats step 2) action, by that analogy, alternately repeat step 3) and step 2) action, until finished product iron core is taken out in termination device operation after arriving setting height unshakable in one's determination.
Above-mentioned motor, the manufacture method of transformer core, sinter the finished product iron core taken out, sintering temperature is 1000 DEG C-1300 DEG C, to reach higher requirement of strength.
Above-mentioned motor, the manufacture method of transformer core, the operating pressure that magnetic conductive metal powder is pressed into the fine and close physical layer of magnetic conductive metal powder by described forcing press is 700MPa-800MPa.
Above-mentioned motor, the manufacture method of transformer core, the operating pressure that ceramic insulation powder is pressed into the fine and close physical layer of ceramic insulation powder by described forcing press is 700MPa-800MPa.
Above-mentioned motor, the manufacture method of transformer core, in compacting magnetic conductive metal powder or ceramic insulation powder process, when the fine and close physical layer of the magnetic conductive metal powder suppressed or the fine and close physical layer of ceramic insulation powder can not move down with counterdie, clamping stagnation in a mold portion time, patrix declines again, is pressed down by fine and close physical layer.
The invention has the beneficial effects as follows:
1, because the particularity of powder metallurgical technique can not cause waste of material, each gram of magnetic conductive metal powder and ceramic insulation powder all effectively can be converted into product, can not produce waste material;
2, do not fold the processes such as secondary operations such as riveting, closely, Mechanical Structure Strength is large for one-shot forming, sheet Coating combination;
3, compaction process ensure that the dimensional accuracy of finished product iron core and the machinability of parts;
4, the problem that magnetic conductive metal powder and ceramic insulation powder blend ratio are restricted effectively is solved, the fine and close physical layer of magnetic conductive metal powder in lamellar structure is the metal of 100%, permeability is high, just effectively can block the eddy current between lamella with few ceramic insulation powder between lamella, greatly reduce loss unshakable in one's determination.
Accompanying drawing explanation
Fig. 1 is the structural representation of motor of the present invention, transformer core;
Fig. 2 is the manufacture method intermediate steps schematic diagram () of motor of the present invention, transformer core;
Fig. 3 is the manufacture method intermediate steps schematic diagram (two) of motor of the present invention, transformer core;
Fig. 4 is the manufacture method intermediate steps schematic diagram (three) of motor of the present invention, transformer core;
Fig. 5 is the front view () of iron core of electric motor of the present invention;
Fig. 6 is the front view (two) of transformer core of the present invention.
Embodiment
Embodiment 1
As shown in the figure, this iron core of electric motor, transformer core, alternately be made up of the fine and close physical layer 2 of multilayer magnetic conductive metal powder and the fine and close physical layer 1 of multi-layer ceramics insulating powder, the fine and close physical layer 2 of described magnetic conductive metal powder and the fine and close physical layer 1 of ceramic insulation powder spaced apart from the bottom to top, in the present embodiment, the number of plies of the fine and close physical layer 2 of magnetic conductive metal powder is 4 layers, the number of plies of the fine and close physical layer 1 of ceramic insulation powder is 5 layers, the bottom unshakable in one's determination and most top layer are ceramic insulation powder densification physical layer 1, the thickness of the fine and close physical layer 2 of described magnetic conductive metal powder is 0.1mm-0.8mm, the thickness of the fine and close physical layer 1 of described ceramic insulation powder is 0.02mm-0.1mm.
The manufacture method of this iron core of electric motor, transformer core, comprises the steps:
1), prepare the mould that conforms to iron core shape, comprise patrix 3 and counterdie 4.
2) in counterdie 4, first load the ceramic insulation powder 5 of setting thickness, then patrix 3 under forcing press effect under be about to ceramic insulation powder 5 and be pressed into the fine and close physical layer 1 of ceramic insulation powder, then patrix 3 is up lifts, in the present embodiment, the thickness of the fine and close physical layer 1 of this ceramic insulation powder is 0.08mm, and the operating pressure of forcing press is 750MPa.
3), counterdie 4 base plate moves down, and the fine and close physical layer 1 of ceramic insulation powder moves down thereupon, if the dense powder suppressed does not move down with counterdie, clamping stagnation in a mold portion time, again can be declined by patrix, dense powder entity is pressed down.The iron powder of setting thickness is filled in the space that the fine and close physical layer of ceramic insulation powder declines in counterdie, then patrix 3 is again about to down iron powder and is pressed into the fine and close physical layer 2 of magnetic conductive metal powder and fine and close physical layer 1 is compressed to one with ceramic insulation powder before simultaneously under forcing press effect, then patrix 3 is up lifts, in the present embodiment, the thickness of the fine and close physical layer 2 of this magnetic conductive metal powder is 0.5mm, and the operating pressure of forcing press is 750MPa.
4), lower mould bottom plate moves down again, repeat step 2) action, by that analogy, alternately repeat step 3) and step 2) action, until finished product iron core is taken out in termination device operation after arriving setting height unshakable in one's determination, the height of this finished product iron core is 2.4mm.
The shape of this finished product iron core see Fig. 5 or Fig. 6, but is not limited only to Fig. 5 and Fig. 6.
Embodiment 2
This iron core of electric motor, transformer core, alternately be made up of the fine and close physical layer 2 of multilayer magnetic conductive metal powder and the fine and close physical layer 1 of multi-layer ceramics insulating powder, the fine and close physical layer 2 of described magnetic conductive metal powder and the fine and close physical layer 1 of ceramic insulation powder spaced apart from the bottom to top, in the present embodiment, the number of plies of the fine and close physical layer 2 of magnetic conductive metal powder is 10 layers, the number of plies of the fine and close physical layer 1 of ceramic insulation powder is 11 layers, the bottom unshakable in one's determination and most top layer are ceramic insulation powder densification physical layer 1, the thickness of the fine and close physical layer 1 of ceramic insulation powder is 0.03mm, the operating pressure of forcing press is 700MPa, the thickness of the fine and close physical layer 2 of magnetic conductive metal powder is 0.1mm, the operating pressure of forcing press is 700MPa, the height of finished product iron core is 1.33mm.In the present embodiment, the magnetic conductive metal powder of employing is cobalt powder, and other are with embodiment 1.
Embodiment 3
This iron core of electric motor, transformer core, alternately be made up of the fine and close physical layer 2 of multilayer magnetic conductive metal powder and the fine and close physical layer 1 of multi-layer ceramics insulating powder, the fine and close physical layer 2 of described magnetic conductive metal powder and the fine and close physical layer 1 of ceramic insulation powder spaced apart from the bottom to top, in the present embodiment, the number of plies of the fine and close physical layer 2 of magnetic conductive metal powder is 3 layers, the number of plies of the fine and close physical layer 1 of ceramic insulation powder is 4 layers, the bottom unshakable in one's determination and most top layer are ceramic insulation powder densification physical layer 1, the thickness of the fine and close physical layer 1 of ceramic insulation powder is 0.1mm, the operating pressure of forcing press is 800MPa, the thickness of the fine and close physical layer 2 of magnetic conductive metal powder is 0.8mm, the operating pressure of forcing press is 800MPa, the height of finished product iron core is 2.8mm.In the present embodiment, the magnetic conductive metal powder of employing is nickel powder, and other are with embodiment 1.
Embodiment 4
This iron core of electric motor, transformer core, finished product iron core sinters, and sintering temperature is 1200 DEG C, and other are with embodiment 1.
Embodiment 5
This iron core of electric motor, transformer core, finished product iron core sinters, and sintering temperature is 1000 DEG C, and other are with embodiment 2.
Embodiment 6
This iron core of electric motor, transformer core, finished product iron core sinters, and sintering temperature is 1300 DEG C, and other are with embodiment 3.
Claims (8)
1. a motor, transformer core, it is characterized in that: be made up of the fine and close physical layer of multilayer magnetic conductive metal powder and the fine and close physical layer of multi-layer ceramics insulating powder, the fine and close physical layer of described magnetic conductive metal powder and the fine and close physical layer of ceramic insulation powder are in interval alternative distribution from the bottom to top, and the bottom unshakable in one's determination and most top layer are ceramic insulation powder densification physical layer.
2. motor according to claim 1, transformer core, is characterized in that: the thickness of described magnetic conductive metal powder bed is 0.1mm-0.8mm.
3. motor according to claim 1, transformer core, is characterized in that: the thickness of described ceramic insulation powder bed is 0.02mm-0.1mm.
4. a manufacture method for motor as claimed in claim 1, transformer core, is characterized in that, comprises the steps:
1), prepare the mould that conforms to iron core shape, comprise upper die and lower die;
2), in counterdie, first load the ceramic insulation powder of setting thickness, then patrix under forcing press effect under be about to lead ceramic insulation powder and be pressed into the fine and close physical layer of ceramic insulation powder, then patrix is up lifts;
3), lower mould bottom plate moves down, the fine and close physical layer of ceramic insulation powder moves down thereupon, the magnetic conductive metal powder of setting thickness is filled in the space that the fine and close physical layer of ceramic insulation powder declines in counterdie, then patrix is again about to down magnetic conductive metal powder and is pressed into the fine and close physical layer of magnetic conductive metal powder and fine and close physical layer is compressed to one with ceramic insulation powder before simultaneously under forcing press effect, and then patrix is up lifts;
4), lower mould bottom plate moves down again, repeats step 2) action, by that analogy, alternately repeat step 3) and step 2) action, until finished product iron core is taken out in termination device operation after arriving setting height unshakable in one's determination.
5. the manufacture method of motor according to claim 4, transformer core, is characterized in that: sinter the finished product iron core taken out, sintering temperature is 1000 DEG C-1300 DEG C.
6. the manufacture method of motor according to claim 4, transformer core, is characterized in that: the operating pressure that magnetic conductive metal powder is pressed into the fine and close physical layer of magnetic conductive metal powder by described forcing press is 700MPa-800MPa.
7. the manufacture method of motor according to claim 4, transformer core, is characterized in that: the operating pressure that ceramic insulation powder is pressed into the fine and close physical layer of ceramic insulation powder by described forcing press is 700MPa-800MPa.
8. the manufacture method of motor according to claim 4, transformer core, it is characterized in that: in compacting magnetic conductive metal powder or ceramic insulation powder process, when the fine and close physical layer of the magnetic conductive metal powder suppressed or the fine and close physical layer of ceramic insulation powder can not move down with counterdie, clamping stagnation in a mold portion time, patrix declines again, is pressed down by fine and close physical layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510535075.4A CN105118605A (en) | 2015-08-28 | 2015-08-28 | Motor, transformer core and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510535075.4A CN105118605A (en) | 2015-08-28 | 2015-08-28 | Motor, transformer core and manufacturing method thereof |
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| CN105118605A true CN105118605A (en) | 2015-12-02 |
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| CN201510535075.4A Pending CN105118605A (en) | 2015-08-28 | 2015-08-28 | Motor, transformer core and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112805907A (en) * | 2018-08-02 | 2021-05-14 | 美国轮轴制造公司 | Systems and methods for additive manufacturing |
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| CN1198577A (en) * | 1997-04-18 | 1998-11-11 | 松下电器产业株式会社 | Compound magnetic material and making method |
| US5935722A (en) * | 1997-09-03 | 1999-08-10 | Lockheed Martin Energy Research Corporation | Laminated composite of magnetic alloy powder and ceramic powder and process for making same |
| US20080258102A1 (en) * | 2007-04-17 | 2008-10-23 | Fuji Electric Device Technology Co., Ltd. | Powder magnetic core and the method of manufacturing the same |
| CN104051104A (en) * | 2014-06-06 | 2014-09-17 | 中国科学院宁波材料技术与工程研究所 | NdFeB permanent magnet and preparation method thereof |
| CN104332263A (en) * | 2014-10-28 | 2015-02-04 | 浙江大学 | Sintering type rare earth permanent magnet capable of reducing eddy-current loss and manufacturing method thereof |
| CN204946633U (en) * | 2015-08-28 | 2016-01-06 | 锦州汉拿电机有限公司 | Motor, transformer core |
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2015
- 2015-08-28 CN CN201510535075.4A patent/CN105118605A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1198577A (en) * | 1997-04-18 | 1998-11-11 | 松下电器产业株式会社 | Compound magnetic material and making method |
| US5935722A (en) * | 1997-09-03 | 1999-08-10 | Lockheed Martin Energy Research Corporation | Laminated composite of magnetic alloy powder and ceramic powder and process for making same |
| US20080258102A1 (en) * | 2007-04-17 | 2008-10-23 | Fuji Electric Device Technology Co., Ltd. | Powder magnetic core and the method of manufacturing the same |
| JP2008270368A (en) * | 2007-04-17 | 2008-11-06 | Fuji Electric Device Technology Co Ltd | Dust core and method of manufacturing the same |
| CN104051104A (en) * | 2014-06-06 | 2014-09-17 | 中国科学院宁波材料技术与工程研究所 | NdFeB permanent magnet and preparation method thereof |
| CN104332263A (en) * | 2014-10-28 | 2015-02-04 | 浙江大学 | Sintering type rare earth permanent magnet capable of reducing eddy-current loss and manufacturing method thereof |
| CN204946633U (en) * | 2015-08-28 | 2016-01-06 | 锦州汉拿电机有限公司 | Motor, transformer core |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112805907A (en) * | 2018-08-02 | 2021-05-14 | 美国轮轴制造公司 | Systems and methods for additive manufacturing |
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